Nat. Hist. Res., Special Issue, No. I: 121-168. March 1994.

Marine Molluscs from the Northern Mariana Islands, Micronesia

Taiji Kurozumi and Akira Asakura

Natural History Museum and Institute, Chiba 955-2 Aoba-cho, Chuo-ku, Chiba 260, Japan

Abstract More than 520 species of marine molluscs were recorded from the northern Mariana Islands. At least 190 species are new records for these islands. Possibilities of pseudopopulations of several species of intertidal littorinids and neritids are discussed.

Key words: Marine molluscs, northern Mariana Islands, pseudopopulation.

The northern Mariana Islands are located in diameter. Sandy or gravel beaches are rare on the western Pacific between l6°22'N and Alamagan (st. A), Pagan (sts. D, E), Agrihan (st. 20°32'N. The marine molluscan fauna of the C) and East Island of Maug (st. A). Raised lime­ islands has been described by Eldredge et al. stone shores are restricted to Pagan (st. D) and ( 1977) and Vermeij et al. ( 1983). Vermeij et al. Agrihan (st. C). (1983) recorded 315 species and discussed oce­ Rocky intertidal regions are often bare, not anic dispersal barriers between the northern covered by weeds or sessile animals. Middle to Marianas and Hawaii. From May to June 1992, lower intertidal zones are covered by non­ an expedition to the northern Mariana Islands articulated coralline algae. Only in the large was conducted by the Natural History Museum tide pools does Sargassum and/or Halipteron and Institute, Chiba (NHMIC) in cooperation occurs densely (e.g. Guguan st. C and Uracas st. with the Division of Fish and Wildlife, Depart­ A). Most of areas in subtidal zones less than 5 m ment of Natural Resource (Commonwealth of depth are also not covered by any organisms, the Northern Mariana Islands) and University and composed of rocks or boulders. Corals of Guam Marine Laboratory. In this paper, we rarely occur in the sheltered area of subtidal have complied a list of marine molluscs, based zones. Massive colonies of Porites occur on st. E on the specimens collected during the expedi­ of Pagan and the corymbose type of Stylophora tion and records previously published in the is dominant on st. B of Maug. literatures. See Asakura et al. (1994) for detailed infor­ mation on each sampling stations. Study Sites and Methods Sampling was done in intertidal and subtidal The northern Mariana Islands consist mainly areas as well as on upper shores. Living ani­ of nine islands, from south to north Anatahan, mals were taken by hand from the intertidal Sarigan, Guguan, Alamagan, Pagan, Agrihan, zones, and skin and SCUBA dives were also Asuncion, Maug (3 small islets) and Uracas. made in shallow subtidal zones. Drift speci­ These islands had a Quaternary volcanic mens were also collected on upper shores, espe­ origin, and their shapes are basically acutely cially st. E of Pagan. Minute shells were ex­ triangular. Volcanic activity occurs on Pagan tracted from sands deposited on the cliffs (alt. 5 and Uracas at the present time. m) at st. C of Guguan and st. B of Agrihan. This Most of the shores are formed by rocky cliffs, sand might have been drifted by heavy wave with pockets of boulder beaches among the action from the mainly subtidal zones. rocky shores. The intertidal zones are very The list is composed of collected species and exposed to heavy wave action. Boulder beach­ species previously recorded from the northern es are composed of large stones ca. 30 cm in Marianas. Information about the material is as

-121- T. Kurozumi and A. Asakura follows: scientific name, Japanese common D, RI, TK leg., CBM-ZM-107306, 27 May. AGR­ name, number of specimens examined, sam­ IHAN: 4 exs., st. A, RI, AA leg., CBM-ZM- pling site, habitat or sampling method, collec­ 107309, 28 May. ASUNCION: 2 exs., st. A, RI, tor, registration number in the NHMIC with AA leg., CBM-ZM-107310, 1 June. MAUG, E: 20 code CBM-ZM, and date in 1992; "d" after the exs., st. A, RI, AA leg., CBM-ZM-107299, 2 June; number of specimen indicates dead (empty) 5 exs., st. A, RI, TK leg., CBM-ZM-107300, 2 shell. Habitat or sampling method are ab­ June. MAUG, N: 2 exs., st. F, RI, AA leg., CBM­ breviated as follows: RI = rocky intertidal, ZM-107301, 3 June. BD = beach drift, BI= boulder intertidal, Dive= Previous record. AN, P & M (Vermeij et al., SCUBA or skin diving. Abbreviations of the 1983). collectors are as follows: AA= Akira Asakura, 4. Chitonidae spp. TK = Taiji Kurozumi, HH = Hiroshi Harada, Material examined. AGRIHAN: ld ex., st. B, TO= Tatsuyuki Ohba and TF = Tatsuwo BD, TK leg., CBM-ZM-108342, 29 May. MAUG, Furuki of the NHMIC, and TP=Todd Pitlick W: 3 exs., st. E, RI, AA leg., CBM-ZM-107298 & and PS= Peter Schupp of University of Guam 107499, 4 June. MAUG, N: 1 ex., st. F, RI, AA Marine Laboratory. Abbreviations of island leg., CBM-ZM-107297, 3 June. names for "Previous record" are as follows: AG= Agrihan, AL= Alamagan, AN= Anata­ Family Acanthochitonidae han, AS = Asuncion, G = Guguan, M = Maug, 5. Acanthochitonidae sp. P=Pagan, S=Sarigan and U=Uracas. Material examined. AGRIHAN: ld ex., st. B, Scientific nomenclature in the list mainly BD, TK leg., CBM-ZM-107920, 29 May. follows Kuroda ( 1960) and Higo and Goto (1992). Class Gastropoda Subclass Prosobranchia List of Marine Molluscs Superorder Archeogastropoda Order Patellogastropoda Class Polyplacophora Family Patellidae Order Neoloricata 6. Patella (Penepatella) sp. 1. Polyplacophora sp. Material examined. ANAT AHAN: 2 exs., st. Previous record. P (Vermeij et al., 1983). A, RI, AA leg., CBM-ZM-107350, 10 May; 3 exs., st. A, RI, AA leg., CBM-ZM-107353, 11 May; 1 Family Mopaliidae ex., st. C, RI, AA leg., CBM-ZM-107359, 13 May; 2. Mopaliidae sp. ld ex., st. D, BD, AA leg., CBM-ZM-107362, 14 Material examined. AGRIHAN: Id ex., st. B, May. SARIGAN: 1 ex., st. A, RI, AA leg., CBM­ BD, TK leg., CBM-ZM-108341, 29 May; 1 ex., st. ZM-107364, 15 May. GUGUAN: ld ex., st. B, BD, C, RI, AA leg., CBM-ZM-107296, 30 May. AA leg., CBM-ZM-107370, 17 May; 3d exs., st. C, Dive, TK leg., CBM-ZM-107372, 18 May. Family Chitonidae PAGAN: 2d exs., st. A, BD, TK leg., CBM-ZM- 3. Acanthopleura spinosa (Bruguiere) 106574, 24 May; 1 ex., st. A, BD, AA leg., CBM­ Uni-hizara ZM-107377, 24 May; 10d exs., st. C, BD, AA, TF Material examined. AN AT AHAN: 11 exs., st. & HH leg., CBM-ZM-106459, 26 May; 28d exs., B, RI, AA leg., CBM-ZM-107302 & 107312, 12 st. C, BD, TK leg., CBM-ZM-106513 & 107587, May; 1 ex., st. B, RI, TK leg., CBM-ZM-107303, 26 May; 25d exs., st. D, BD, AA leg., CBM-ZM- 12 May; 1 ex., st. D, RI, TK leg., CBM-ZM- 106289, 27 May; 1d ex., st. D, BD, TK leg., 107304, 14 May. SARIGAN: 3 exs., st. A, RI, AA CBM-ZM-106682, 27 May; 45d exs., st. E, BD, leg., CBM-ZM- 107311, 15 May. GUGUAN: 3 TK leg., CBM-ZM-106068, 24 May; 27d exs., st. exs., st. B, RI, AA leg., CBM-ZM-107307, 17 E, BD, AA leg., CBM-ZM-106184, 24 May; 2d May. ALAMAGAN: 1 ex., st. A, RI, AA leg., exs., st. F, BD, TK leg., CBM-ZM-106558, 24 CBM-ZM-107308, 9 June. PAGAN: 1 ex., st. C, May. AGRIHAN: 6d exs, st. B, BD, TK leg., RI, AA leg., CBM-ZM-107305, 26 May; 1 ex., st. CBM-ZM-107835 & 52, 29 May; 13d exs, st. C,

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BD, TK leg., CBM-ZM-105946, 30 May; ld ex., exs., st. A, BD, TK leg., CBM-ZM-106575, 24 north coast, Dive, PS & TP leg., CBM-ZM- May; 25 exs., st. A, RI, AA leg., CBM-ZM- 106809, 29 May. ASUNCION: 7 exs., st. A, RI, 107376, 24 May;5d exs., st. C, BD. AA, TF & HH AA leg., CBM-ZM-107390, 1 June; 9d exs., st. A, leg., CBM-ZM-106460, 26 May; 19d exs., st. C, RI, AA leg., CBM-ZM-107584. 1 June. MAUG, E: BD, TK leg., CBM-ZM-106514 & 107588, 26 11 exs., st. A, BD, TK leg., CBM-ZM-106017, 2 May; 2 exs., st. C, RI, AA leg., CBM-ZM-107379, June; 9 exs., st. A, RI, AA leg., CBM-ZM-107395, 26 May; 5 exs., st. C, Dive, TK leg., CBM-ZM- 2 June; ld ex., Dive, PS & TP leg., CBM-ZM- 107380, 26 May; 2 exs., st. D, RI, TK leg., CBM­ 107555, 3 June. MAUG, N: 6d exs., north coast, ZM-107233, 27 May; 5 exs., st. D, RI, AA leg., Dive (4-5 m), TP leg., CBM-ZM-106796, 3 June; CBM-ZM-107381, 27 May; 2d exs., st. D, RI, TK 11 exs., st. F, AA leg., CBM-ZM-107 400, 3 June. leg., CBM-ZM-107382, 27 May; 9d exs., st. E, BD, MAUG, W: ld ex., st. E, AA leg., CBM-ZM- TK leg., CBM-ZM-106067, 24 May; 2d exs., st. E, 107 405, 4 June. BD, AA leg., CBM-ZM-106185, 24 May; ld ex., Previous record. As P. fiexuosa Quoy & Gai­ Dive, TP leg., CBM-ZM-106755, 27 May. AGR­ mard from AN, G, P, AS & M (Vermeij et al., IHAN: 20 exs., st. A, RI, AA leg., CBM-ZM- 1983). 107384, 28 May; 4d ex., st. B, RI, TK leg., CBM­ Remarks. Vermeij et al. (1983) identified this ZM-107105 & 107853, 29 May; 141 exs., st. C, species as P. fiexuosa, but Fukuda ( 1993) report­ BD, AA leg., CBM-ZM-105947, 30 May. ASUN­ ed that the systematic status of specimens CION: 100d exs., st. A, RI, AA leg., CBM-ZM- from the Ogasawaras was yet uncertain. Mor­ 107 583, 1 June; 7 exs., st. B, RI, AA leg., CBM­ phological characteristics, such as elongated ZM-107392, 7 June. MAUG, E: 1 ex., st. A, BD, shell form, a smaller shell than P. optima with TK leg., CBM-ZM-106018, 2 June; 13 exs., st. A, some black spots on the margin, of specimens RI, AA leg., CBM-ZM-107396, 2 June; 4 exs., st. from the northern Marianas agree well with A, RI, TK leg., CBM-ZM-107398, 2 June; 2 exs., those of the Ogasawaras. Therefore, we have st. B, RI, TK leg., CBM-ZM-107399, 2 June. treated this from as P. (Penepatella) sp. in this MAUG, N: 7 exs .. st. F, RI, AA leg., CBM-ZM- list. 107401, 2 June. MAUG, W: 1 ex., st. E, RI, AA leg., CBM-ZM-107406, 4 June. Family N acellidae Previous record. As C. toreuma (Reeve) from 7. Cellana spp. AN, G, P, AS, M & U (Vermeij et al., 1983). Material examined. AN AT AHAN: 25 exs., st. Remarks. As Asakura and Kurozumi ( 1991) A, RI, AA leg., CBM-ZM-106831 & 107354, 10 discussed, shell morphology of the Cellana tor­ May; 1 ex., st. A, RI, AA leg., CBM-ZM-107355, euma species group in the northern Marianas 11 May; 2d exs., st. B, BD, TK leg., CBM-ZM- was highly variable. At least two types were 106447, 12 May; 6 exs., st. B, RI, AA leg., CBM­ recognized: a tall, thick shell type with radial ZM-107356, 12 May; 1 ex., st. B, RI, TK leg., ribs, inhabiting rocky surfaces in middle to CBM-ZM-107357, 12 May; 10 exs., st. C, RI. AA lower intertidal zones, and a flat, thin, smooth leg., CBM-ZM-107360, 13 May; 3 exs., st. D, RI, type living beneath the smooth boulders in the TK leg., CBM-ZM-106915, 14 May. SARIGAN: 4 lower intertidal to subtidal areas. However, exs., st. A, RI, AA leg., CBM-ZM-107365, 15 these two types could not be clearly distin­ May. GUGUAN: 1 ex., st. B, RI, TK leg., CBM­ guished and are treated as Cellana spp. ZM-106960, 17 May; 10 exs., st. B, RI, AA leg., CBM-ZM-107371, 18 May; 2d exs., st. C, BD, TK Family Lottiidae leg., CBM-ZM-107953, 18 May; 3d exs .. st. C, RI, 8. Nipponacmea boninensis (Asakura & Ni­ TK leg., CBM-ZM-107373, 18 May. ALAMA­ shihama) GAN: 4 d exs., st. A, BD, TK leg., CBM-ZM- Ogasawara-aogai 106431, 18 May; 20d exs., st. A, BD, AA leg., Material examined. ANAT AHAN: 7 exs., st. CBM-ZM-107021, 19 May; 25 exs., st. A, RI, AA A, BI, AA leg., CBM-ZM-107352, 11 May; 18 leg., CBM-ZM-107375, 9 June; 6 exs., st. B, Dive, exs., st. A, Bl, TK leg., CBM-ZM-106850, 11 TK leg., CBM-ZM-107044, 8 June. PAGAN: 2d May; 70 exs., st. C, BI, AA leg., CBM-ZM-107358,

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13 May; 7 exs., st. C, BI, AA leg., CBM-ZM- Previous record. G, P, AS & U (Vermeij et al., 107361, 14 May. SARIGAN: 2 exs., st. A, BI, TK 1983). leg., CBM-ZM-107366, 16 May. PAGAN: 2d exs., 12. "Acmaeidae" sp. B st. A, BD, TK leg., CBM-ZM-106577, 24 May; 25 Previous record. AN & P (Vermeij et al., 1983 ). exs., st. A, BI, AA leg., CBM-ZM-107376, 24 Order Vetigastropoda May; 20 exs., st. B, BI, AA leg., CBM-ZM-107378, Family Haliotidae 25 May; 2 exs., st. C, BI, AA leg., CBM-ZM- 107379, 26 May; 5 exs., st. C, Dive, TK leg., 13. Ovinotis ovina (Gmelin) CBM-ZM-107380, 26 May; 5 exs., st. D, BI, AA Ma-anago leg., CBM-ZM-107381, 27 May; 2d exs., st. D, BI, Previous record. G & P (Vermeij et al., 1983). TK leg., CBM-ZM-107382, 27 May. AGRIHAN: 14. Sanhaliotis sp. A 20 exs., st. A, BI, AA leg., CBM-ZM-107384, 28 Material examined. PAGAN: 5d exs., st. A, May; 1 ex., st. B, BI, AA leg., CBM-ZM-107387, BD, TK leg., CBM-ZM-106579 & 106667, 24 29 May. ASUNCION: 40 exs., st. A, BI, AA leg., May; ld ex., st. C, BD, AA, TF & HH leg., CBM-ZM-107389, 1 June. MAUG, W: 20 exs., st. CBM-ZM-106462, 26 May; 2d exs., st. C, BD, TK E, Bl, AA leg., CBM-ZM-107404, 4 June. leg., CBM-ZM-107591, 26 May; ld ex., st. D, BD, Previous record. As Notoacmea cf. N. shrenki AA leg., CBM-ZM-106288, 27 May; ld ex., st. D, (Lishke) [N. schrenckii (Lischke)] from AN, G, BD, TK leg., CBM-ZM-106733, 27 May; 2d exs., AL, P, AS & M (Vermeij et al., 1983). st. E, BD, TK leg., CBM-ZM-106062, 24 May; 5d 9. Patelloida lentiginosa (Reeve) exs., st. E, BD, AA leg., CBM-ZM-106181, 24 Taiwan-siborigasa May. Material examined. ANAT AHAN: 1 ex., st. D, Previous record. As Haliotis jacnensis Reeve RI, TK leg., CBM-ZM-106916, 14 May. from P (Vermeij et al., 1983). GUGUAN: 3d exs., st. C, BD, TK leg., CBM-ZM- Remarks. Vermeij et al. (1983) identified this 107952 & 84, 18 May. ALAMAGAN: 2 exs., st. species as Haliotis jacnensis. Specimens from B, Dive, TK leg., CBM-ZM- 107045, 8 June. the northern Marianas, however, exhibit the PAGAN: 7d exs., st. A, BD, TK leg., CBM-ZM- following characters: concave ventral margin, 106578, 24 May; ld ex., st. C, BD, AA, TF & HH numerous regular radial ribs and dark reddish leg., CBM-ZM-106461, 26 May; 9d exs., st. C, BD, brown color; they may be a different species. TK leg., CBM-ZM-106515 & 107589, 26 May; 6 15. Sanhaliotis sp. B exs., st. C, Dive, TK leg., CBM-ZM-107216, 26 Ana-mamori May; 5 d exs., st. E, BD, TK leg., CBM-ZM- Material examined. PAGAN: ld ex., Dive, TP 106065, 24 May; 22d exs., st. E, BD, AA leg., leg., CBM-ZM-106756, 27 May. AGRIHAN: 2 CBM-ZM-106183, 24 May. AGRIHAN: 22d exs, exs., st. A, RI, AA leg., CBM-ZM-107580, 28 st. B, BD, TK leg., CBM-ZM-107836 & 107854, May. MAUG, E: ld ex., st. A, BD, TK leg., CBM­ 29 May; 70d exs, st. C, BD, AA leg., CBM-ZM- ZM-106016, 2 June; 4 exs., st. A, RI, TK leg., 105945, 30 May. ASUNCION: 2d exs., st. A, RI, CBM-ZM-107445, 2 June; 3 exs., st. A, RI, AA AA leg., CBM-ZM-107586, 1 June; leg., CBM-ZM-107420, 2 June; 10 exs., M. north 10. Yayoiacmea oyamai (Habe) coast, RI, HH leg., CBM-ZM-107554, 5 June. Yayoi-hanagasa MAUG, N: 6 exs., st. F, RI, AA leg., CBM-ZM- Material examined. GUGUAN: 3d exs., st. C, 107459, 3 June. BD, TK leg., CBM-ZM-107951, 18 May. PAGAN: Previous record. As Haliotis varia varia L. ld ex., st. A, BD, TK leg., CBM-ZM-106675, 24 from G, P, AN & M (Vermeij et al., 1983). May; ld ex., st. E, BD, TK leg., CBM-ZM-106066, Remarks. Vermeij et al. (1983) identified this 24 May; 1 ex., st. E, Dive, TK leg., CBM-ZM- species as Haliotis varia varia. Fukuda (1993) 107248, 27 May. AGRIHAN: 9d exs, st. B, BD, distinguished the specimens in the Ogasawaras TK leg., CBM-ZM-107855, 29 May. MAUG, E: 1 from S. varia and/or S. stomatiaeformis, and ex., st. C, Dive, TK leg., CBM-ZM-107513, 4 considered that they probably represented an June. undescribed species. The morphology of speci­ 11. "Acmaeidae" sp. A mens from the northern Marianas agrees well

-124- Marine molluscs from the northern Mariana Islands with that of specimens from the Ogasawaras, TK leg., CBM-ZM-107407, 5 June. and, therefore, the distribution range of this 25. Emarginella biangulata (Sowerby) species should be expanded to the south. Hu takado-susokire 16. Sanhaliotis sp. C Material examined. AGRIHAN: ld ex., st. B, Material examined. PAGAN: 4d exs., st. C, BD, BD, TK leg., CBM-ZM-107861, 29 May. TK leg., CBM-ZM-107590, 26 May; 3d exs., st. E, 26. Scutus unguis (L.) BD, TK leg., CBM-ZM-106063, 24 May; 9d exs., Ryukyu-otomegasa st. E, BD, AA leg., CBM-ZM-106180, 24 May. Material examined. GUGUAN: ld ex., st. C, Previous record. As Haliotis planata Sowerby BD, TK leg., CBM-ZM-107982, 18 May. AGR­ from AN, G, P, AG & M (Vermeij et al., 1983). IHAN: 1 d ex., st. B, BD, TK leg., CBM-ZM- Remarks. Vermeij et al. (1983) identified this 107862, 29 May. species as Haliotis planata. All the shells ob­ Previous record. P (Vermeij et al., 1983 ). tained from the northern Marianas are flat and 27. Montfortista kirana Habe tiny, with a completely smooth surface. This Mikaeri-chidorigasa may be an undescribed species. Material examined. AGRIHAN: ld ex., st. B, BD, TK leg., CBM-ZM-107859, 29 May. Family Scissurellidae 28. Montfortulana eurythma (Dautzenberg) 17. Scissurella corona ta Watson Wakiyorigai Kogiku-kuchikire-ebisu Material examined. PAGAN: ld ex., st. A, BD, Material examined. AGRIHAN: ld ex., st. B, TK leg., CBM-ZM-106580, 24 May; ld ex., st. C, BD, TK leg., CBM-ZM-107856, 29 May. MAUG, BD, TK leg., CBM-ZM-107592, 26 May; 2d exs., N: 1 ex., st. F, AA leg., CBM-ZM-107403, 3 June. st. E, BD, TK leg., CBM-ZM-106064, 24 May; 3d Previous record. P & M (Vermeij et al., 1983). exs., st. E, BD, AA leg., CBM-ZM-106182, 24 18. Scissurella cf. S. pseudoaequatoria Kay May. AGRIHAN: ld ex., st. C, BD, TK leg., CBM­ Previous record. G, P, AS & M (Vermeij et al., ZM-105953, 30 May. 1983). 29. Diodora (Elegidion) granifera (Pease) 19. Scissurella cf. S. carinata Watson Material examined. GUGUAN: 5 exs., st. B, RI, Previous record. P & M (Vermeij et al., 1983). TK leg., CBM-ZM-106975, 17 May. AGRIHAN: ld ex., st. B, BD, TK leg., CBM-ZM-107857, 29 Family Fissurellidae May. MAUG, N: 1 ex., st. F, RI, AA leg., CBM­ 20. Emarginula concinna A. Adams ZM-107402, 3 June. Kinuji-susokire Previous record. G, P, AS & M (Vermeij et al., Material examined. AGRIHAN: ld ex., st. B, 1983). BD, TK leg., CBM-ZM-107674, 29 May. 30. Diodora (Elegidion) quadriradiata (Reeve) 21. Emarginula dilecta A. Adams Tengai Previous record. G, P, AG & M (Vermeij et al., Material examined. AGRIHAN: ld ex., st. B, 1983). BD, TK leg., CBM-ZM-107837, 29 May. 22. Emarginula cf. E. peasei Thiele 31. Diodora (Elegidion) semilunata Habe Material examined. AGRIHAN: 2d exs., st. B, Mikazuki-tenngai BD, TK leg., CBM-ZM-107838 & 107858, 29 Material examined. GUGUAN: 2d exs., st. C, May. BD, TK leg., CBM-ZM-107921 & 108337, 18 23. Emarginula sp. May. MAUG, N: 1 ex., st. F, RI, AA leg., CBM­ Previous record. G, AS & M (Vermeij et al., ZM-108336, 3 June. 1983). 24. Emarginella eximia (A. Adams) Family Trochidae Koban-susokire 32. Danilia cf. D. eucheliformis Nomura & Material examined. GUGUAN: 4d exs., st. C, Hatai BD, TK leg., CBM-ZM-107922 & 107983, 18 Previous record. P (Vermeij et al., 1983). May. AGRIHAN: ld ex., st. B, BD, TK leg., CBM­ 33. Euchelus pauperculus (Lischke) ZM-107860, 29 May. MAUG, E: 1 ex., st. B, Dive, Ibo-sanshogai-modoki

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Previous record. G, P & M (Vermeij et al., Nisikiuzu 1983). Previous record. G & P (Vermeij et al., 1983). 34. Euchelus cf. E. pauperculus (Lischke) 43. Trochus (s.s.) stellatus Gmelin Material examined. ALAMAGAN: ld ex., st. Murasakiuzu A, RI, AA leg., CBM-ZM- 108024, 9 June. Material examined. ANAT AHAN: 2d exs., st. PAGAN: ld ex., st. E, BD, TK leg., CBM-ZM- B, BD, TK leg., CBM-ZM-106448, 12 May; 1 ex., 106071, 24 May. st. C, RI, AA leg., CBM-ZM-106885, 13 May; 2 35. Euchelus cf. E. foveolatus (A. Adams) exs., st. D, RI, TK leg., CBM-ZM-106918, 14 Previous record. G & M (Vermeij et al., 1983). May. SARIGAN: ld ex., st. A, RI, AA leg., CBM­ 36. Euchelus cf. E. instrictus (Gould) ZM-108237, 15 May. ALAMAGAN: ld ex., st. A, Material examined. AGRIHAN: 5d exs., st. B, BD, TK leg., CBM-ZM-106356, 18 May; ld ex., BD, TK leg., CBM-ZM-107863, 29 May. st. A, BD, TK leg., CBM-ZM-106357, 18 May; ld 37. Fautor cf. F. comptus (A. Adams) ex., st. A, BD, TK leg., CBM-ZM-106412, 9 June; Material examined. PAGAN: ld ex., st. E, BD, ld ex., st. A, RI, AA leg., CBM-ZM-107033, 19 AA leg., CBM-ZM-106186, 24 May. May. PAGAN: 2d exs., st. A, RI, AA leg., CBM­ 38. Eurytrochus affinis cognatus (Pilsbry) ZM-107143, 24 May; 1d ex., st. D, BD, TK leg., Kuruma-chigusa CBM-ZM-106683, 24 May; ld ex., st. E, BD, TK Material examined. PAGAN: ld ex., st. A, BD, leg., CBM-ZM-106070, 24 May; ld ex., st. E, BD, TK leg., CBM-ZM-106582, 24 May; 6d exs., st. E, AA leg., CBM-ZM-106191, 24 May. MAUG, E: 3 BD, TK leg., CBM-ZM-106075 & 106189, 24 exs., st. A, TK leg., CBM-ZM-106019, 2 June; 1d May. MAUG, E: 2 exs., st. C, Dive, TK leg., ex., st. A, BD, TK leg., CBM-ZM-106780, 2 June; CBM-ZM-107514, 4 June. MAUG, W: 6 exs., st. 1 ex., South edge, RI, HH leg., CBM-ZM-107505, E, RI, AA leg., CBM-ZM-107463, 4 June. 4 June. MAUG, W: 1 ex., st. E, RI, AA leg., 39. "Gibbula" marmorea (Pease) CBM-ZM-107486, 4 June. Material examined. GUGUAN: 42 exs., st. B, Previous record. As T. ochroleucus Gmelin RI, AA leg., CBM-ZM-107999, 17 May; 9d exs., from AN, G & P (Vermeij et al., 1983). st. C, BD, TK leg., CBM-ZM-107923, 18 May. 44. Trochus (Tectus) pyramis (Born) AGRIHAN: ld ex., st. B, BD, TK leg., CBM-ZM- Gintakahama 107675, 29 May. Material examined. ALAMAGAN: ld ex., st. Previous record. G, P & AS (Vermeij et al., A, BD, TK leg., CBM-ZM-106355, 18 May. 1983). Previous record. P (Vermeij et al., 1983). 40. Alcyna ocellata A. Adams 45. Clanculus (s.s.) stigmatarius A. Adams Kiba-benibai Benifu-natsumomo Material examined. GUGUAN: 4d exs., st. C, Material examined. MAUG, E: ld ex., st. A, BD, TK leg., CBM-ZM-107924, 18 May. BD, TK leg., CBM-ZM-106020, 2 June. PAGAN: 41. Trochus (s.s.) histrio Reeve 3d exs., st. E, BD, TK leg., CBM-ZM-106072, 24 Hakushauzu May. Material examined. PAGAN: ld ex., st. A, BD, Previous record. As C. clanguloides (Wood) TK leg., CBM-ZM-106581, 24 May; ld ex., st. C, from P & AS (Vermeij et al., 1983). BD, AA, TF & HH leg., CBM-ZM-106463, 26 46. Clanculus (Mescoclanculus) denticulatus May; 1 d ex., st. C, Dive, TK leg., CBM-ZM- (Gray) 107201, 26 May; 2d exs., st. C, BD, TK leg., Tetsuiro-natsumomo CBM-ZM-107593, 26 May; 2d exs., st. E, BD, TK Material examined. PAGAN: ld ex., st. A, BD, leg., CBM-ZM-106069, 24 May; ld ex., st. E, BD, TK leg., CBM-ZM-106584, 24 May; 1Od exs., st. AA leg., CBM-ZM-106192, 24 May. AGRIHAN: E, BD, AA leg., CBM-ZM-106188, 24 May. 1 ex., st. C, BD, TK leg., CBM-ZM-105949, 30 Previous record. As C. atropurpureus (Gould) May. from G & P (Vermeij et al., 1983). Previous record. As T. intextus Kiener from P, 47. Ethalia guamensis (Quoy & Gaimard) AS & M (Vermeij et al., 1983). Nishiki-kisago 42. Trochus (s.s.) maculatus L. Material examined. PAGAN: 2d exs., st. A,

-126- Marine molluscs from the northern Mariana Islands

BD, TK leg., CBM-ZM-106666, 24 May. Hime-awabi 48. Talopena vernicosa (Gould) Material examined. ANATAHAN: 2 exs., st. Ha bu tae-shi ta dam i D, RI, TK leg., CBM-ZM-106920, 14 May. Material examined. PAGAN: Id ex., st. E, BD, GUGUAN: 2d exs., st. C, BD, TK leg., CBM-ZM- AA leg., CBM-ZM-106190, 24 May. 107925, 18 May. PAGAN: Id ex., st. A, BD, TK 49. Rossiteria nucleus (Philippi) leg., CBM-ZM-106678, 24 May. Id ex., st. E, BD, Konoborigai AA leg., CBM-ZM-106194, 24 May. AGRIHAN: Material examined. PAGAN: 10d exs., st. A, 2d exs., st. B, BD, TK leg., CBM-ZM-107677, 29 BD, TK leg., CBM-ZM-106583, 24 May; 17d exs., May. st. E, BD, TK leg., CBM-ZM-106074, 24 May; 5d 54. Stomatella sp. exs., st. E, BD, AA leg., CBM-ZM-106187, 24 Material examined. PAGAN: 2d exs., st. A, May. AGRIHAN:ld ex., st. B, BD, TK leg., CBM­ BD, TK leg., CBM-ZM-106567 4& 106677, 24 ZM-107866, 29 May; 4 exs., st. C, BD, TK leg., May; 2 d exs., st. D, BD, TK leg., CBM-ZM- CBM-ZM-105950, 30 May. 106734, 27 May; 3d exs., st. E, BD, AA leg., Previous record. As Monilea philippiana CBM-ZM-106195, 24 May. AGRIHAN: Id ex., st. (Dunker) from P (Vermeij et al., 1983). B, BD, TK leg., CBM-ZM-107839, 29 May; 4d 50. Synaptocochlea concinna (Gould) exs., st. C, BD, TK leg., CBM-ZM-107411, 30 Kumori-chigoasiya May; Id ex., north coast, Dive, PS & TP leg., Material examined. AGRIHAN: 13d exs., st. B, CBM-ZM-106810, 29 May. MAUG, W: 9 exs., st. BD, TK leg., CBM-ZM-107676 & 107870, 29 E, RI, AA leg., CBM-ZM-107565, 4 June. May; Id ex., SW coast, Dive 15 m (surge zone), Previous record. As S. cf. S. auricula Lamarck TP leg., CBM-ZM-107115, 30 May. MAUG, E: I from G & P (Vermeij et al., 1983). ex., st. E, RI, AA leg., CBM-ZM-107 498, 4 June; I Remarks. Vermeij et al. ( 1983) reported this ex., st. B, Dive, TK leg., CBM-ZM-107544, 5 species as S. cf. S. auricula Lamarck. This spe­ June. cies has regularly radial ribs and may be en­ Previous record. G, P, AS &·M (Vermeij et al., demic to the northern Marianas. 1983). 55. Stomatolina sanguinea (A. Adams) 51. Trochidae sp. Kurenai-ashiyagama Previous record. P (Vermeij et al., 1983). Material examined. GUGUAN: I ex., st. B, RI, AA leg., CBM-ZM-106652, 17 May. PAGAN: 2d Family Stomatellidae exs., st. A, BD, TK leg., CBM-ZM-106676, 24 52. Stomatella planulata (Lamarck) May; 6 d exs., st. A, BD, AA leg., CBM-ZM- Hira-hime-awabi 106286, 24 May. Material examined. AN AT AHAN: 12 exs., st. 56. Stomatolina sp. A D, Dive, TK leg., CBM-ZM- 106919, 14 May. Material examined. AGRIHAN: Id ex., st. B, ALAMAGAN:2d exs., st. A, BD, TK leg., CBM­ BD, TK leg., CBM-ZM-107872, 29 May. ZM-106428, 18 May; 10 exs., st. B, Dive, TK leg., 57. Stomatolina sp. B CBM-ZM-107046, 8 June; Id ex., st. A, BD, TK Material examined. AGRIHAN: Id ex., st. B, leg., CBM-ZM-106413, 9 June. PAGAN: Id ex., BD, TK leg., CBM-ZM-108034, 29 May. st. C, BD, AA, TF & HH leg., CBM-ZM-106464, URACAS: I ex., st. A, RI, AA leg., CBM-ZM- 26 May; 8 exs., st. C, Dive, TK leg., CBM-ZM- 108009, 6 June. 10721 7, 26 May; 2d exs., st. E, BD, AA leg., 58. Pseudostomatella sp. CBM-ZM-106193, 24 May. AGRIHAN: Id ex., st. Previous record. P & M (Vermeij et al., 1983). B, BD, TK leg., CBM-ZM-107840, 29 May; 8d 59. Stomatellidae sp. exs., st. C, BD, TK leg., CBM-ZM- 105951 & Material examined. AGRIHAN: 2 exs., st. B, 107413, 30 May; 7d exs., north coast, Dive, PS BD, TK leg., CBM-ZM-107873, 29 May. & TP leg., CBM-ZM-106811, 29 May. Previous record. AN & U (Vermeij et al., Family Skeneidae 1983). 60. Brookula cf. B. iki Kay 53. Stomatella varia (A. Adams) Previous record. G (Vermeij et al., 1983).

-127- T. Kurozumi and A. Asakura

61. Leucorhynchia tricarinata Melvill & Sta­ Material examined. ANAT AHAN: lex., RI, nden AA leg., ZM106632, 10 May; ld ex., st. A, BD, Mi tsukado-otoginosugai TK leg., CBM-ZM-106431, 11 May; 1 ex., st. A, Material examined. GUGUAN: ld ex., st. C, RI, AA leg., CBM-ZM-106832, 10 May; 1 ex., st. BD, TK leg., CBM-ZM-107926, 18 May. A, RI, AA leg., CBM-ZM-107576, 11 May; ld ex., 62. Leucorhynchia cf. L. crossei (Tryon) st. B, BD, TK leg., CBM-ZM-106449, 12 May; 1 Previous record. M (Vermeij et al., 1983). ex., st. B, RI, AA leg., CBM-ZM-107322, 12 May; 63. Cyclostremiscus emeryi (Ladd) 2 exs., st. C, BD, TK leg., CBM-ZM-106899, 13 Mikagami-shi tad a mi May; 1 ex., st. C, BD, AA leg., CBM-ZM-107323, Previous record. G, P, AS & M (Vermeij et al., 13 May. SARIGAN: 15 exs., st. A, RI, AA leg., 1983). CBM-ZM-107324, 15 May. GUGUAN: ld ex., st. 64. Lophocochlias minutissimus (Pilsbry) A, RI, TK leg., CBM-ZM-108309, 16 May. ALA­ Mijin-kabu to-shi tadami MAGAN: 7 exs., st. A, RI, AA leg., CBM-ZM- Previous record. P & AS (Vermeij et al., 1983). 107325, 19 May; 3 exs., st. A, RI, AA leg., CBM­ ZM-107332, 9 June. PAGAN: 2d exs., st. A, BD, Family Liotiidae TK leg., CBM-ZM-106586, 24 May; 3 exs., st. A, 65. Liotina (Dentarene) loculosa (Gould) RI, AA leg., CBM-ZM-107144, 24 May; 8d exs., Haguruma-himekatabe st. C, BD, TK leg., CBM-ZM-106576 & 107594, Previous record. M (Vermeij et al., 1983). 26 May; 4d exs., st. D, BD, AA leg., CBM-ZM- 106290, 27 May; 4 exs., st. D, RI, TK leg., CBM­ Family Turbinidae ZM-107326, 27 May; 3 exs., st. E, Dive, TK leg., 66. Turbo (s.s.) petholatus L. CBM-ZM-107247, 27 May; 5d exs., st. E, BD, TK Ryuten leg., CBM-ZM-106077, 24 May; 5d exs., st. E, BD, Material examined. PAGAN: 2d exs., st. D, BD, AA leg., CBM-ZM-106197, 24 May. AGRIHAN: AA leg., CBM-ZM-106291, 27 May; 2 d exs., 1 ex., st. A, RI, AA leg., CBM-ZM-107083, 28 Dive, PS leg., CBM-ZM-106736, 24 May; 1 ex., May; ld ex., st. C, BD, TK leg., CBM-ZM-105952, Dive, PS leg., CBM-ZM-107198, 24 May; 4d exs., 30 May. ASUNCION: 8 exs., st. A, RI, AA leg., Dive, PS & TP leg., CBM-ZM-106746, 25 May. CBM-ZM-107327, 1 June; ld ex., Dive (10-15 m), MAUG: 6d exs., N. west coast, Dive (15m), TP TP leg., CBM-ZM-106825, 1 June. MAUG, E: 30 leg., CBM-ZM-106796, 4 June. exs., st. A, TK leg., CBM-ZM-106021, 2 June; 7 Previous record. AN, S, P, AS & M (Vermeij et exs., st. A, RI, AA leg., CBM-ZM-107328, 2 June; al., 1983). 22 exs., st. A, RI, TK leg., CBM-ZM-107329 & 67. Turbo (Marmarostoma) argyrostomus L. 107436, 2 June. MAUG, N: 8 exs., st. F, RI, AA Chosen-sazae leg., CBM-ZM-107330, 3 June. MAUG, W: 21 Material examined. ANAT AHAN: 2d exs., exs., st. E, RI, AA leg., CBM-ZM-107464, June. Dive, PS & TP leg., CBM-ZM-106805, 12 May. URACAS: 7 exs., st. A, RI, AA leg., CBM-ZM- ALAMAGAN: ld ex., Dive (7 m), PS leg., CBM­ 107331, 6 June. ZM-108248, 19 May. PAGAN: 2d exs., st. A, BD, Previous record. AN, G, P, AG, AS & M (Ver­ TK leg., CBM-ZM-106587, 24 May; ld ex., st. C, meij et al., 1983). BD, AA, TF & HH leg., CBM-ZM-106466, 26 69. Astralium (Distellifer) rhodostoma (La­ May; ld ex., st. E, BD, TK leg., CBM-ZM-106078, marck) 24 May; 3d exs.,Dive, PS & TP leg., CBM-ZM- Oo-urauzu 106747, 25 May. ASUNCION: 2d exs., Dive (10- Material examined. PAGAN: ld ex., st. D, BD, 15 m), TP leg., CBM-ZM-106824, 1 June. MAUG, TK leg., CBM-ZM-106292, 27 May; st. E, BD, TK E: ld ex., st. C, Dive, TK leg., CBM-ZM-107515, leg., CBM-ZM-106079, 24 May; ld ex., st. D, BD, 4 June. TK leg., CBM-ZM-106292, 27 May. MAUG, E: 1 Previous record. AN, S, P, AS & M (Vermeij et ex., Dive, PS & TP leg., CBM-ZM-107556, 3 al., 1983). June. 68. Turbo (Marmarostoma) setosus Gmelin Previous record. G, P & M (Vermeij et al., Maru-sazae 1983).

-128- Marine molluscs from the northern Mariana Islands

70. Collonista cf. C. glareosa Gould Previous record. P & M (Vermeij et al., 1983). Material examined. GUGUAN: Id ex., st. B, RI, AA leg., CBM-ZM-l 08000, 17 May; 8d exs., st. C, Family Neritidae BD, TK leg., CBM-ZM-107954, 18 May. PAGAN: 77. Nerita (Ritena) guamensis Quoy & Gai­ 1 ex., st. E, Dive, TK leg., CBM-ZM-107267, 27 mard May. AGRIHAN: 14d exs., st. B, BD, TK leg., Material examined. AN AT AHAN: 1 ex., st. A, CBM-ZM-107678, 107841 & 107867, 29 May. RI, AA leg., ZM106833, 10 May; 3 exs., st. A, RI, MAUG, E: 1 ex., st. D, Dive, TK leg., CBM-ZM- AA leg., ZM106841, 11 May; 3 exs., st. D, RI, TK 107536, 5 June. leg., CBM-ZM-106907, 14 May. SARIGAN: I ex., 71. Leptothyra cf. L. inepta (Gould) st. A, RI, AA leg., CBM-ZM-106934, 16 May. Previous record. P (Vermeij et al., 1983). AGRIHAN: 1 ex., North, RI, TO leg., CBM-ZM- 72. Leptothyra cf. L. maculosa (Pease) 107102, 29 May; 6 exs., west coast, RI, TO & HH Previous record. G, P & M (Vermeij et al., leg., CBM-ZM-107108, 30 May. MAUG, E: 15 1983). exs., st. A, RI, AA leg., CBM-ZM-107422, 2 June; 73. Leptothyra sp. 25 exs., st. A, RI, TK leg., CBM-ZM-107 446, 2 Previous record. M (Vermeij et al., 1983). June. MAUG, N: 11 exs., st. F, RI, AA leg., CBM-ZM-107460, 3 June. Family Phasianellidae Previous record. AN & S (Vermeij et al., 1983) 7 4. Phasianella solida (Born) 78. Nerita (Ritena) plicata L. Sarasabai Kiba-amagai Material examined. PAGAN: 2d exs., st. A, Material examined. AN AT AHAN: Id ex., st. BD, TK leg., CBM-ZM-106585, 24 May; 8 exs., st. A, RI, AA leg., CBM-ZM-106840, 10 May; I ex., C, Dive, TK leg., CBM-ZM-107202, 26 May; 95d st. A, RI, TK leg., ZM106851, 11 May; 11 exs., st. exs., st. E, BD, TK leg., CBM-ZM-106076, 24 A, RI, AA leg., CBM-ZM-107566, 11 May; 4 exs., May; 25d exs., st. E, BD, AA leg., CBM-ZM- st. B, RI, AA leg., CBM-ZM-106873, 12 May; 32 106196, 24 May; 2 exs., st. E, Dive, TK leg., exs., st. C, RI, AA leg., CBM-ZM-106884, 13 CBM-ZM-107268, 27 May. AGRIHAN: 3 exs., st. May; 7 exs., st. D, RI, TK leg., CBM-ZM-106902, B, BD, TK leg., CBM-ZM-107869, 29 May; 13d 14 May. SARIGAN: 1 ex., st. A, RI, TK leg., exs., st. C, BD, TK leg., CBM-ZM-105954, 30 CBM-ZM-106925, 16 May. GUGUAN: 5 exs., st. May. B, RI, AA leg., CBM-ZM-106942, 17 May; 2 exs., Previous record. P (Vermeij et al., 1983). st. B, RI, TK leg., CBM-ZM-106957, 17 May. ALAMAGAN: 3d exs., st. A, BD, AA leg., CBM­ Family Tricoliidae ZM-107028, 19 May. PAGAN: 33d exs., st. A, RI, 75. Tricolia variabilis (Pease) AA leg., CBM-ZM-107145, 24 May; 2 exs., st. A, Benibai RI, AA leg., CBM-ZM-107173, 25 May; 50 exs., Material examined. GUGUAN: 60 exs., st. B, st. B, RI, AA leg., CBM-ZM-107167, 25 May; Id RI, AA leg., CBM-ZM-108001, 17 May; I ex., st. ex., st. C, BD, AA, TF & HH leg., CBM-ZM- C, RI, TK leg., CBM-ZM-107997, 18 May. 106466, 26 May; Id ex., st. C, BD, TK leg., PAGAN: 1 ex., st. D, RI, TK leg., CBM-ZM- CBM-ZM-107595, 26 May; 2d exs., st. D, BD, AA 107236, 27 May. AGRIHAN: 2d exs., st. B, BD, leg., CBM-ZM-106293, 27 May; ld ex., st. D, BD, TK leg., CBM-ZM-107868, 29 May. TK leg., CBM-ZM-106684, 24 May; I ex., st. D, Previous record. G, P & M (Vermeij et al., RI, AA leg., CBM-ZM-107189, 27 May; 13 exs., 1983). st. D, RI, TK leg., CBM-ZM-107223 & I 07224, 27 May. AGRIHAN: 2 exs., st. A, RI, AA leg., Order Neritopsina CBM-ZM-107076 & I 07084, 28 May; 2d exs., st. Family Neritopsidae C, BD, TK leg., CBM-ZM-105955, 30 May; 8 exs., 76. Neritopsis radula (L.) st. C, RI, AA leg., CBM-ZM-107104, 30 May; 1 Amagai-modoki ex., east coast, RI, TO & HH leg., CBM-ZM- Material examined. PAGAN: ld ex., st. D, BD, 107107, 30 May. ASUNCION: 11 exs., st. A, RI, TK leg., CBM-ZM-106685, 24 May. AA leg., CBM-ZM-107124, I June. MAUG, E: 22

-129- T. Kurozumi and A. Asakura exs, st. A, RI, AA leg., CBM-ZM-107421, 2 June; Material examined. PAGAN: Id ex., st. A, BD, 22 exs., st. A, RI, TK leg., CBM-ZM-107 442, 2 TK leg., CBM-ZM-106668, 24 May; ld ex., st. E, June. BD, AA leg., CBM-ZM-106287, 24 May. Previous record. S, G, AL, P, AS & M (Vermeij 86. Phenacolepas sp. et al., 1983). Material examined. AGRIHAN: 1 ex., st. B, 79. Nerita (Ritena) insculpta Recluz BD, TK leg., CBM-ZM-107874, 29 May. Ryukyu-amagai Material examined. PAGAN: 1 ex., st. B, RI, Superorder Caenogastropoda Order Neotaenioglossa AA leg., CBM-ZM-107162, 25 May. MAUG, E: 1 Family Diastomatidae exs., st. A, RI, AA leg., CBM-ZM-107 423, 2 June. Previous record. P (Vermeij et al., 1983). 87. Clathrofenella perparvulum (Watson) 80. Nerita (Ritena) maxima Gmelin Previous record. As Cerithidium perparvulum Oo-amagai from P, AS & M (Vermeij et al., 1983). Previous record. P (Vermeij et al., 1983). 88. Clathrofenella sp. 81. Nerita (Amphinerita) polita L. Previous record. As Cerithidium sp. from P & Nishiki-amaobune AS (Vermeij et al., 1983). Material examined. ANATAHAN: ld ex., st. 89. Obtortio pupoides A. Adams A, BD, TK leg., CBM-ZM-106432, 11 May; ld Sanagi-motsubo ex., st. A, RI, AA leg., CBM-ZM-106832, 10 May; Previous record. As Finella pupoides from P, 1 ex., st. A, RI, AA leg., CBM-ZM-107567, 11 AS & M (Vermeij et al., 1983). May. GUGUAN: 2 exs., st. B, RI, AA leg., CBM­ ZM-106945, 17 May. ALAMAGAN: 1 ex., st. A, Family Scaliolidae RI, AA leg., CBM-ZM-107061, 9 June. PAGAN: I 90. Scaliola sp. d ex., st. C, BD, TK leg., CBM-ZM-107596, 26 Previous record. M (Vermeij et al., 1983). May; 1 ex., st. D, RI, AA leg., CBM-ZM-107190, 27 May. MAUG, E: 2d exs., st. A, RI, AA leg., Family Dialidae CBM-ZM-108302, 2 June. 91. Dia/a varia A. Adams Previous record. P (Vermeij et al., 1983). Suzume-hamatubo 82. Nerita (Thelyostyla) albicilla L. Material examined. GUGUAN: 2d exs., st. C, Amaobune BD, TK leg., CBM-ZM-107928, 18 May. Material examined. ANAT AHAN: 1 ex., st. B, 92. Dia/a tlammea (Pease) RI, AA leg., CBM-ZM-106857, 12 May. Previous record. AN (Vermeij et al., 1983). Previous record. P (Vermeij et al., 1983). 83. Puperita bensoni (Recluz) Family Litiopidae Ukon-amagai 93. Litiopidae cf. Alaba sp. Material examined. AGRIHAN: 1 ex., st. B, RI, Previous record. M (Vermeij et al., 1983). AA leg., CBM-ZM-107085, 29 May. PAGAN: ld ex., st. A, RI, AA leg., CBM-ZM-107146, 24 May; Family Cerithiidae 9 exs., st. C, RI, AA leg., CBM-ZM-10717 4, 26 94. Bittium parcum Gould May; 11 exs., st. D, RI, TK leg., CBM-ZM-107224 Ooshima-chigusa-kanimori & 107235, 27 May. Material examined. GUGUAN: 71 exs., st. B, Previous record. P (Vermeij et al., 1983). RI, AA leg., CBM-ZM-106954 & 108002, 17 84. Pisulina adamsiana G. & H. Nevill May; 19 exs., st. B, RI, TK leg., CBM-ZM-106959 Shiratama-amagai & 106976, 17 May; 40d exs., st. C, BD, TK leg., Material examined. AGRIHAN: ld ex., st. B, CBM-ZM-107943, 18 May. ALAMAGAN: 5 d BD, TK leg., CBM-ZM-107679, 29 May. exs., st. A, RI, AA leg., CBM-ZM-108286, 9 June. PAGAN: 4d exs., st. C, Dive, TK leg., CBM-ZM- Family Phenacolepadidae 107201, 26 May; 10 exs., st. D, RI, TK leg., 85. Phenacolepas crenulatus (Broderip) CBM-ZM-107245, 27 May; ld ex., st. E, BD, TK Yuki-suzume leg., CBM-ZM-106179, 24 May. AGRIHAN: 32d

-130- Marine molluscs from the northern Mariana Islands

exs., st. B, BD, TK leg., CBM-ZM-107683 & BO, AA leg., CBM-ZM-106199, 24 May. 107879, 29 May. URACAS: 1 ex., st. A, RI, TK IOI. Cerithium (Semivertagus) interstriatum leg., CBM-ZM-107007, 6 June; 40 exs., st. A, RI, Sowerby AA leg., CBM-ZM-108010, 108013 & 108017, 6 Meotosuji-kanimori June. Material examined. MAUG, E: 1 ex., st. C, Previous record. G, P, AS & M (Vermeij et al., Dive, TK leg., CBM-ZM-107517, 4 June. 1983). Previous record. P & M (Vermeij et al., 1983). 95. Cerithium (s.s.) boeticum Pease 102. Cerithium (Semivertagus) nesioticum Kurifu-kanimori Pilsbry & Vanatta Material examined. GUGUAN: ld ex., st. C, Kurimushi-kanimori BD, TK leg., CBM-ZM-107929, 18 May.PAGAN: Material examined. ANAT AHAN: ld ex., st. 3 exs., st. E, Dive, TK leg., CBM-ZM-107273, 27 C, TK leg., CBM-ZM-106901, 13 May. May. MAUG, E: 1 ex., st. C, Dive, TK leg., CBM­ GUGUAN: ld ex., st. C, BO, TK leg., CBM-ZM- ZM-107518, 4 June. 107989, 18 May. ALAMAGAN: 1 ex., st. A, RI, 96. Cerithium (s.s.) citrium Sowerby AA leg., CBM-ZM-107058, 9 June. PAGAN: 2d Kiiro-kanimori exs., st. A, BO, TK leg., CBM-ZM-106595, 24 Material examined. PAGAN: ld ex., st. A, BD, May; 1 ex., st. A, RI, AA leg., CBM-ZM-107148, TK leg., CBM-ZM-106592, 24 May; ld ex., st. C, 24 May; ld ex., st. C, BO, AA, TF & HH leg., BD, TK leg., CBM-ZM-107598, 26 May; ld ex., CBM-ZM-106468, 26 May; 2d exs., st. D, BD, TK st. E, BD, TK leg., CBM-ZM-106080, 24 May. leg., CBM-ZM-106688, 27 May; 1 ex., st. D, RI, 97. Cerithium (s.s.) columna Sowerby AA leg., CBM-ZM-107186, 27 May; 5 exs., st. D, Ko-oninotsuno RI, TK leg., CBM-ZM-107227 & 107241, 27 Material examined. ALAMAGAN: 1 ex., st. A, May; 7 d exs., st. E, BO, TK leg., CBM-ZM- RI, AA leg., CBM-ZM-107059, 9 June. PAGAN: 1 106084, 24 May; 10d exs., st. E, BD, AA leg., d ex., st. E, RI, AA leg., CBM-ZM-108255, 27 CBM-ZM-106200, 24 May; 2 exs., st. E, Dive, TK May. AGRIHAN: ld ex., st. B, RI, AA leg., CBM­ leg., CBM-ZM-107249 &107270, 27 May; AGR­ ZM-107086, 29 May. IHAN: 2d exs., st. C, BD, TK leg., CBM-ZM- Previous record. P (Vermeij et al., 1983). 105962, 30 May. MAUG, E: 11 exs., st. C, Dive, 98. Cerithium (s.s.) echinatum Lamarck TK leg., CBM-ZM-107516, 4 June. Me-oninotsuno Previous record. G, P & M (Vermeij et al., Material examined. ALAMAGAN: ld ex., st. 1983). A, RI, AA leg., CBM-ZM- 108250, 19 May. 103. Cerithium (Semivertagus) zebrum Kiener PAGAN: ld ex., st. A, BD, TK leg., CBM-ZM- Hana-kanimori 106593, 24 May; 5d exs., st. C, BO, TK leg., Material examined. GUGUAN: ld ex., st. B, RI, CBM-ZM-107597, 26 May; ld ex., st. D, BO, TK AA leg., CBM-ZM-106947, 17 May. ALAMA­ leg., CBM-ZM-106294, 27 May. AGRIHAN: 3d GAN: 5 d exs., st. A, RI, AA leg., CBM-ZM- exs., st. C, BD, TK leg., CBM-ZM-105965, 30 108287, 9 June. PAGAN: 27 exs., st. D, RI, TK May. MAUG, E: 1 ex., North edge, RI, HH leg., leg., CBM-ZM-107228 & 107244, 27 May; 1d ex., CBM-ZM-107511, 5 June. st. E, BD, TK leg., CBM-ZM-I06083, 24 May; ld Previous record. As C. mutatum Sowerby and ex., st. E, BD, AA leg., CBM-ZM-106201, 24 May; C. cf. C. rubus Deshayes from AN, G, AL, P, AG 1 ex., st. E, Dive, TK leg., CBM-ZM-107271, 27 & M (Vermeij et al., 1983). May. 99. Cerithium (s.s.) nodulosum Bruguiere Previous record. G, P, AS & M (Vermeij et al., Oninotsunogai 1983). Previous record. M (Vermeij et al., 1983). 104. Cerithium (Conocerithium) atromargi­ 100. Cerithium (lschnocerithium) rostratum natum Dautzenberg & Bouge Sowerby Konshibori-tsunobue Hashinaga-tsunobue Material examined. ANAT AHAN: ld ex., st. Material examined. PAGAN: ld ex., st. E, BD, C, RI, AA leg., CBM-ZM-106896, 13 May. TK leg., CBM-ZM-106082, 24 May; ld ex., st. E, GUGUAN: 2d exs., st. C, BD, TK leg., CBM-ZM-

-131- T. Kurozumi and A. Asakura

107944 & 107990, 18 May. ALAMAGAN: 3d Togata-kanimori exs., st. A, RI, AA leg., CBM-ZM-108288, 9 June. Material examined. ALAMAGAN: 2d exs., st. PAGAN: 7d exs., st. E, BD, TK leg., CBM-ZM- A, BD, TK leg., CBM-ZM-106371, 18 May. 106085, 24 May; 3d exs., st. E, BD, AA leg., PAGAN: 3d exs., st. A, BD, TK leg., CBM-ZM- CBM-ZM-106202, 24 May; 2 exs., st. E, Dive, TK 106591, 24 May; 1d ex., st. C, BD, AA, TF & HH leg., CBM-ZM-107269, 27 May. MAUG, W: ld leg., CBM-ZM-106467, 26 May; 3d exs., st. D, ex., st. E, AA leg., CBM-ZM-108268, 4 June. BD, TK leg., CBM-ZM-106686, 27 May; ld ex., URACAS: ld ex., st. A, RI, AA leg., CBM-ZM- st. E, BO, TK leg., CBM-ZM-106081, 24 May; 5d 108281, 6 June. exs., st. E, BD, AA leg., CBM-ZM-106198, 24 Previous record. P (Vermeij et al., 1983). May; 1 ex., st. E, Dive, TK leg., CBM-ZM- 105. Cerithium (Conocerithium) egenum 107272, 27 May. AGRIHAN: ld ex., st. B, RI, AA Gould leg., CBM-ZM-108260, 29 May. MAUG, E: ld Hoso-shibori-tsunobue ex., st. A, BD, TK leg., CBM-ZM-106024, 2 June. Material examined. GUGUAN: ld ex., st. B, RI, Previous record. AN, S, P & AS (Vermeij et al., AA leg., CBM-ZM-106946, 17 May. ALAMA­ 1983). GAN: ld ex., st. A, RI, AA leg., CBM-ZM-108289, 110. Rhinoclavis articulata (A. Adams & 9 June. PAGAN: 4d exs., st. A, RI, AA leg., Reeve) CBM-ZM-107147, 24 May; 4d exs., st. C, Dive, Kazari-kanimori TK leg., CBM-ZM-107204, 26 May; 2 exs., st. D, Material examined. PAGAN: ld ex., st. A, BD, RI, TK leg., CBM-ZM-107226, 27 May; 1 ex., st. TK leg., CBM-ZM-106594, 24 May. D, RI, TK leg., CBM-ZM-107242, 27 May; 2d 111. Rhinoclavis aspera (L.) exs., st. E, BD, AA leg., CBM-ZM-106203, 24 Yokowa-kanimori May. AGRIHAN: ld exs., st. B, BD, TK leg., Previous record. AN (Vermeij et al., 1983). CBM-ZM-107684, 29 May; ld ex., st. C, BD, TK leg., CBM-ZM-105964, 30 May. URACAS: 6 exs., Family Plesiotrochidae st. A, RI, TK leg., CBM-ZM-107006, 6 June; 5 112. Plesiotrochus exilis (Pease) exs., st. A, RI, AA leg., CBM-ZM- 108010 & Hime-chigusa-kanimori 108016, 6 June. Material examined. AGRIHAN: 1 ex., st. B, Previous record. G, AL, P, AG, AS & M (Ver­ BD, TK leg., CBM-ZM-107881, 29 May. meij et al., 1983). 106. Clypeomorus nympha Houbrick Family Planaxidae Kurofu-kanimori 113. Angiola labiosa (A. Adams) Material examined. ALAMAGAN: 1 ex., st. A, Yokosuji-tamaki bi-modoki RI, AA leg., CBM-ZM-107035, 19 May; 7 exs., st. Material examined. ANATAHAN: 1 ex., st. A, A, RI, AA leg., CBM-ZM-107057, 9 June; 3d exs., RI, TK leg., CBM-ZM-106854, 11 May; 29 exs., st. A, RI, AA leg., CBM-ZM-108025, 9 June. st. A, RI, AA leg., CBM-ZM-107569, 11 May; I 107. Rhinoclavis fasciata (Bruguiere) ex., st. B, RI, TK leg., CBM-ZM-106876, 12 May; Naga-takenoko-kanimori 13 exs., st. C, RI, AA leg., CBM-ZM-106881, 13 Material examined. ALAMAGAN: ld ex., st. May; 16 exs., st. D, RI, TK leg., CBM-ZM- A, BD, TK leg., CBM-ZM-106372, 18 May. 106909, 14 May. SARIGAN: 4d exs., st. A, RI, PAGAN: 5d exs., st. D, BD, TK leg., CBM-ZM- AA leg., CBM-ZM-108241, 15 May. GUGUAN: 106687, 27 May. 22 exs., st. B, BD, AA leg., CBM-ZM-106944, 17 Previous record. AN, G & P (Vermeij et al., May; 24 exs., st. B , BD, TK leg., CBM-ZM- 1983). 106958, 17 May; 27 d exs., st. C, BD, TK leg., 108. Rhinoclavis cedonulli (Sowerby) CBM-ZM-107941 & 107986, 18 May. ALAMA­ Hime-togata-kanimori GAN: 3 exs., st. B, RI, TK leg., CBM-ZM-107047, Material examined. PAGAN: ld ex., st. D, BD, 8 June. PAGAN: 1 ex., st. A, RI, AA leg, CBM­ TK leg., CBM-ZM-106295, 27 May. MAUG, E: 1 ZM-107149, 24 May; 1 ex., st. B, RI, TK leg., d ex., st. A, RI, TK leg., CBM-ZM-108303, 2 June. CBM-ZM-107169, 25 May; 3d exs., st. E, BD, TK 109. Rhinoclavis sinensis (Gmelin) leg., CBM-ZM-106088, 24, May; 4 exs., st. C, RI,

-132- Marine molluscs from the northern Mariana Islands

TK leg., CBM-ZM-107218, 26 May; 23 exs., st. D, TK leg., CBM-ZM-107996, 18 May. RI, TK leg., CBM-ZM-107240, 27 May. AGR­ IHAN: 1 ex., st. B, RI, AA leg., CBM-ZM-107092, Family Vitrinellidae 29 May; 9d exs., st. B, BD, TK leg., CBM-ZM- 117. Sansonia sp. 107680, 107843, & 107876, 29 May; 14d exs., st. Previous record. G (Vermeij et al., 1983). C, BD, TK leg., CBM-ZM- 105959, 30, May. MA UG, E: 6 exs., st. A, RI, TK leg., CBM-ZM- Family Rissoidae 107449, 2 June. MAUG, N: 32 exs., st. F, RI, AA 118. Alvania sp. leg., CBM-ZM-107461, 4 June. URACAS: 1 ex., Material examined. AGRIHAN: 3 exs., st. B, st. A, RI, AA leg., CBM-ZM-107005, 6 June. BD, TK leg., CBM-ZM-107890, 29 May. Previous record. As Planaxis zonatus A. 119. Parashiela beetsi Ladd Adams from AN, G, AL, P, AS & M (Vermeij et Previous record. P (Vermeij et al., 1983). al., 1983). 120. Rissoina (Peripatella) ambigua (Gould) 114. Supplanaxis niger (Quoy & Gaimard) Hososuji-choji Kuro-tamakibi-modoki Material examined. GUGUAN: ld ex., st. C, Material examined. ANAT AHAN: 40 exs., st. BD, TK leg., CBM-ZM-107934, 18 May. PAGAN: A , Bl, TK leg., CBM-ZM-106853, 11 May; 68 2 exs., st. E, Dive, TK leg., CBM-ZM-107274, 27 exs., st. C, Bl, AA leg., CBM-ZM-106880, 13 May; May. MAUG, E: 1 ex., st. C, Dive, TK leg., CBM­ 11 exs., st. D, BI, TK leg., CBM-ZM-106910, 14 ZM-107519, 4 June. May; 100 exs., st. A, BI, AA leg., CBM-ZM- Previous record. G, P & AS (Vermeij et al., 107570, 11 May. SARIGAN: 29 exs., st. A, BI, 1983). TK leg., CBM-ZM-106929, 16 May; 120 exs., st. 121. Rissoina (Zebinella) imbricata (Gould) A, BI, AA leg., CBM-ZM-106933, 16 May. ALA­ Makisuji-choji MAGAN: 1 ex., st. A, RI, AA leg., CBM-ZM- Previous record. As Zebina imbricata from M 107031, 19 May. PAGAN: 6d exs., st. E, BI, TK (Vermeij et al., 1983). leg., 24, May; 2d exs., st. E, BI, AA leg., CBM-ZM- 122. Rissoina (Apataxia) cerithiiformis 106205, 24 May; 150 exs., st. B, BI, AA leg, Tryon CBM-ZM-107168, 25 May; 1 ex., st. D, Bl, AA Kinsuji-choji leg, CBM-ZM-107193, 27 May. ASUNCION: 100 Material examined. GUGUAN: 9d exs., st. C, exs., st. A, BI, AA leg., CBM-ZM-107128, 1 June. BD, TK leg., CBM-ZM-107931 & 108338, 18 MAUG, E: 1 ex., st. A, BI, AA leg., CBM-ZM- May. PAGAN: ld ex., st. E, Dive, TK leg., CBM­ 107 432, 2 June; 4 exs., st. A, BI, TK leg., CBM­ ZM-107275, 27 May. AGRIHAN: 2d exs., st. B, ZM-107437, 2 June. MAUG, W: 3 exs., st. E, BI, BD, TK leg., CBM-ZM-107896, 29 May. AA leg., CBM-ZM-107462, 4 June. URACAS: 8d Previous record. As R. miltozona Tomlin from exs., st. A, RI, AA leg., CBM-ZM-108279, 6 June. G, P, AS & M (Vermeij et al., 1983). Previous record. S, G, AL,P, AS & M (Vermeij 123. Rissoina (Rissolina) turricula Pease et al., 1983). Ganko-choji Material examined. GUGUAN: 12d exs., st. C, Family Modulidae BD, TK leg., CBM-ZM-107932 & 108339, 18 115. Modulus tectum (Gmelin) May. AGRIHAN: 5d exs., st. B, BD, TK leg., Katabe-damashi CBM-ZM-107682 & 107893, 29 May. Material examined. PAGAN: ld ex., st. E, BD, Previous record. G, P, M & AS (Vermeij et al., TK leg., CBM-ZM-106089, 24 May. MAUG, E: 1983). ld ex., st. E, Dive, TK leg., CBM-ZM-108270, 5 124. Rissoina (Rissolina) sp. A June. Material examined. AGRIHAN: 2d exs., st. B, Previous record. M (Vermeij et al., 1983). BD, TK leg., CBM-ZM-107892, 29 May. 125. Rissoina (Rissolina) sp. B Family Cingulopsidae Material examined. AGRIHAN: ld ex., st. B, 116. Pseudopisinna sp. BD, TK leg., CBM-ZM-107894, 29 May. Material examined. GUGUAN: 1 ex., st. C, RI, 126. Phosinella sp.

-133- T. Kurozumi and A. Asakura

Material examined. ld ex., AGRIHAN: st. B, MAGAN: st. A, RI, AA leg., CBM-ZM-107056, 9 BD, TK leg., CBM-ZM-107895, 29 May. June. PAGAN: ld. ex., st. E, BD, TK leg., CBM­ 127. "Schwartziella gracilis (Pease)" ZM-106588, 24 May; 7 exs., st. B, RI, AA leg, Material examined. GUGUAN: ld ex., st. C, CBM-ZM-107163, 25 May; 4 exs., st. D, RI, TK BD, TK leg., CBM-ZM-107935, 18 May. leg., CBM-ZM-107225 & 107237, 27 May. AGR­ Previous record. G (Vermeij et al., 1983). IHAN:l ex., st. B, RI, TO leg., CBM-ZM-107103, 128. Zebina semiplicata (Pease) 29 May; 6 exs., east coast, RI, TO & HH leg., Material examined. GUGUAN: 16d exs., st. C, CBM-ZM-107110, 30 May. ASUNCION: 2 exs., BD, TK leg., CBM-ZM- 107930, 107933 & st. A, AA leg., CBM-ZM-107125, 1 June. MAUG, 108340, 18 May. AGRIHAN: ld ex., st. B, BD, E: 1 ex., st. A, RI, AA leg., CBM-ZM-107426, 2 TK leg., CBM-ZM-107891, 29 May. June, 2 exs., st. A, RI, TK leg., CBM-ZM-107443, 129. Zebina tridentata (Michaud) 2 June. MAUG, W: 1 ex., st. E, RI, AA leg., Kurimushi-choji CBM-ZM-107485, 4 June. URACAS: ld ex., st. Material examined. PAGAN: ld ex., st. E, BD, A, AA leg., CBM-ZM-108278, 6 June. TK leg., CBM-ZM-106090, 24 May; ld ex., st. E, Previous record. AN, S & P (Vermeij et al., BD, AA leg., CBM-ZM-106206, 24 May. 1983). Previous record. G, P & M (Vermeij et al., 136. Littoraria pintado (Wood) 1983). Kodaka-tamakibi Material examined. ANATAHAN: 1 ex., st. A, Family Assimineidae RI, AA leg., CBM-ZM-106835, 10 May; 26 exs., 130. "Assiminea" nitida Pease st. A, RI, AA leg., CBM-ZM-106842 & 107568, Material examined. AGRIHAN: 6d exs., st. B, 11 May; 9 exs., st. A, RI, TK leg., CBM-ZM- BD, TK leg., CBM-ZM-107681 & 107878, 29 106852, 11 May; 8 exs., st. B, RI, TK leg., CBM­ May. ZM-106875, 12 May; 2 exs., st. C, RI, TK leg., CBM-ZM-106900, 13 May; 19 exs., st. C, RI, AA Family Caecidae leg., CBM-ZM-106882, 13 May; 1 ex., st. D, RI, 131. Caecum arcuatum de Folin TK leg., CBM-ZM-106903, 14 May. SARIGAN: 8 Previous record. G, AS & M (Vermeij et al., exs., st. A, BD, TK leg., CBM-ZM-106928, 16 1983). May. GUGUAN: 41 exs., st. B, AA leg., CBM-ZM- 106941 & 107578, 17 May; 34d exs., GUGUAN: 132. Caecum oahuense (Pilsbry) st. C, BD, TK leg., CBM-ZM-106979, 107942 & Previous record. G & M (Vermeij et al., 1983). 107985, 18 May. ALAMAGAN: 53 exs., st. A, 133. Caecum sepimentum de Folin RI, AA leg., CBM-ZM-107023 & 107030, 19 Previous record. G, P & AS (Vermeij et al., May. PAGAN: 8d exs., st. E, BD, TK leg., CBM­ 1983). ZM-106086, 24, May; 4d exs., st. E, BD, AA leg., 134. Caecum cf. C. glabellum A. Adams CBM-ZM-106204, 24 May; 5 exs., st. A, RI, AA Previous record. M (Vermeij et al., 1983). leg., CBM-ZM-107154, 24 May; 100 exs., st. B, RI, AA leg., CBM-ZM-107165, 25 May; 27 exs., Family Littorinidae st. C, RI, AA leg., CBM-ZM-107175, 26 May; 14 135. Littoraria coccinea (Gmelin) exs., st. D, RI, AA leg., CBM-ZM-107191, 27 Teri-tamakibi May; 13 exs., st. D, RI, TK leg., CBM-ZM- Material examined. ANAT AHAN: 3 exs., st. 107238, 27 May; 4d exs., st. E, BD, AA leg., A, RI, AA leg., CBM-ZM-106843, 11 May; 1 ex., CBM-ZM-106204, 24 May. AGRIHAN: 40 exs., st. B, RI, TK leg., ZM106874, 12 May; 3 exs., st. st. A, RI, AA leg., CBM-ZM-107078, 28 May; 20 A, RI, AA leg., CBM-ZM-106843, 11 May; 1 ex., exs., st. B, RI, AA leg., CBM-ZM-107090, 29 st. B, RI, AA leg., CBM-ZM-106874, 12 May; 1 May; 4 d exs., st. B, BD, TK leg., CBM-ZM- ex., st. D, RI, TK leg., CBM-ZM-106904, 14 May. 107842 & 107875, 29 May; 40d exs., st. C, BD, SARIGAN: 2 exs., st. A, RI, TK leg., CBM-ZM- TK leg., CBM-ZM-105958, 30 May 49 exs., st. D, 106927, 16 May. ALAMAGAN: 5 exs., st. A, RI, RI, TK leg, CBM-ZM-107118, 107119 & 107120, AA leg., CBM-ZM-107029, 19 May; 1 ex., ALA- 30 May; 40 exs., east coast, RI, TO & HH leg.,

-134- Marine molluscs from the northern Mariana Islands

CBM-ZM-107111, 30 May. ASUNCION: 7 exs., CBM-ZM-107163, 25 May; 10 exs., st. B, RI, AA st. A, RI, AA leg., CBM-ZM-10126, 1 June; 50 leg., CBM-ZM-107166, 25 May; 13 exs., st. C, RI, exs., st. B, RI, AA leg., CBM-ZM-107136, 7 June. AA leg., CBM-ZM-107177, 26 May; 5 exs., st. D, MAUG, E: 5 exs., st. A, RI, TK leg., CBM-ZM- RI, AA leg., CBM-ZM-107192, 27 May; 2 exs., st. 107447, 2 June. MAUG, N: 40 exs., st. F, RI, AA D, RI, TK leg., CBM-ZM-107239, 27 May. AGR­ leg., CBM-ZM-107470, 3 June. URACAS: 5 exs., IHAN: 40 exs., st. A, RI, AA leg., CBM-ZM- st. A, RI, AA leg., CBM-ZM-106995, 6 June. 107077, 28 May; 32 exs., st. B, RI, AA leg., Previous record. AN, S, G, AL, P, AS, M & U CBM-ZM-107088, 29 May; 3 exs., east coast, RI, (Vermeij et al., 1983). TO & HH leg., CBM-ZM-107109, 30 May; 5 exs., 137. Littoraria undulata (Gray) st. D, RI, TK leg, CBM-ZM-107117, 30 May; 5d Hososuji-uzura-tamakibi exs., st. C, BD, TK leg., CBM-ZM-105956, 30 Material examined. AN AT AHAN: 1 ex., st. A, May. ASUNCION: 45 exs., st. A, AA leg., CBM­ RI, AA leg., CBM-ZM-106844, 11 May. ALA­ ZM-107582, 1 June; 25 exs., st. B, RI, AA leg., MAGAN: 1 ex., st. A, RI, AA leg., CBM-ZM- CBM-ZM-107138, 7 June; 24 exs., st. B, RI, TK 107024, 19 May. PAGAN: 1 ex., st. B, RI, AA leg, leg., CBM-ZM-107140 & 107141, 7 June. CBM-ZM-107164, 25 May. AGRIHAN: 1 ex., st. MAUG, E: 12 exs., st. A, RI, AA leg., CBM-ZM- B, RI, AA leg., CBM-ZM-107091, 29 May; 2d 107 424 & 107 425, 2 June; 5 exs., st. A, RI, TK exs., st. C, BD, TK leg., CBM-ZM-105957, 30 leg., CBM-ZM-107448, 2 June. MAUG, N: 48 May. exs., st. F, RI, AA leg., CBM-ZM-107471, 3 June. Previous record. P (Vermeij et al., 1983). MAUG, W: 1 ex., st. E, RI, AA leg., CBM-ZM- 138. Nodilittorina (s.s.) trochoides (Gray) 107491, 4 June. URACAS: 4 exs., st. A, RI, AA lbo-tamakibi leg., CBM-ZM-106993, 6 June. Material examined. AGRIHAN: 6 exs., st. B, Previous record. As N. quadricincta f eejeensis RI, AA leg., CBM-ZM-107089, 29 May. ASUN­ (Reeve) from AN, G, P, AS & M (Vermeij et al., CION: 11 exs., st. A, AA leg., CBM-ZM-107127 & 1983). 107 581, 1 June; 9 exs., st. B, RI, AA leg., CBM­ Remarks. Vermeij et al. ( 1983) reported this ZM-107137, 7 June. MAUG, N: 21 exs., st. F, RI, species as N. quadricincta feejeensis. However, AA leg., CBM-ZM-107472, 3 June. MAUG, W: 1 Asakura and Kurozumi (1991) discussed its ex., st. E, RI, AA leg., CBM-ZM-107484, 4 June. taxonomy, and specimens from the northern URACAS: 1 ex., st. A, BD, AA leg., CBM-ZM- Marianas had stronger spiral cords on the body 106994, 6 June. whorl, a lower spiral and less clear zigzag Previous record. As N. pyramidalis (Q. & G.) stripe patterns than N. quadricincta feejeensis. from P, AS, M & U (Vermeij et al., 1983). Therefore, we have treated it as N. (G.) sp. 139. Nodilittorina (Granulilittorina) sp. A 140. Nodilittorina (Granulilittorina) sp. B Ogasawara-tamakibi Maru-arare-tamakibi Material examined. ANAT AHAN: 1 ex., st. A, Material examined. ANAT AHAN: I ex. st. A, RI, AA leg., CBM-ZM-106834 & 106845, 10 RI, AA leg., CBM-ZM-106846, 11 May; 1 ex., st. May; 9 exs., st. B, RI, AA leg., CBM-ZM-106858, D, RI, TK leg., CBM-ZM-106906, 14 May. ASU­ 12 May; 10 exs., st. C, RI, AA leg., CBM-ZM- NCION: 1 ex., st. B, RI, AA leg., CBM-ZM- 106883, 13 May; 6 exs., st. D, RI, TK leg., CBM­ 107139, 7 June; 1 ex., st. B, RI, TK leg., CBM­ ZM-106905, 14 May. SARIGAN: 6 exs., st. A, RI, ZM-107142, 7 June. TK leg., CBM-ZM-106926, 16 May; 6 exs., st. A, Remarks. Higo and Goto (1992) and Fukuda RI, AA leg., CBM-ZM-106935, 16 May. GU­ ( 1993) reported this species as N. ventricosa GUAN: 13 exs., st. A, RI, AA leg., CBM-ZM- (Philippi), but Rosewater ( 1970) showed that 106940, 16 May; 4 exs., st. A, RI, TK leg., CBM­ this familiar name was junior homonym of ZM-106956, 16 May; 2 exs., st. C, RI, TK leg., Littorina scabra ventricosa. Though Rosewater CBM-ZM-106978 18 May. ALAMAGAN: 50 (1970) treated this species as a synonym of N. exs., st. A, RI, AA leg., CBM-ZM-107022, 19 millegrana (Philippi), N. (G.) sp. B has regularly May. PAGAN: 7 exs., st. A, RI, AA leg., CBM­ ribs with black lines among the ribs. Probably, ZM-107153, 24 May; 7 exs., st. B, RI, AA leg., this is a different species, and it may be N. (G.)

-135- T. Kurozumi and A. Asakura granocostata Reeve. A, BD, TK leg., CBM-ZM-106376, 18 May; ld 141. Nodilittorina (Granulilittorina) vidua ex., st. A, BD, TK leg., CBM-ZM-106414, 9 June. (Gould) Previous record. AN (Vermeij et al., 1983). Taiwan-tamakibi 145. Strombus (Dolomena) plicatus pulchel­ Previous record. As N millegrana (Philippi) lus Reeve from P (Vermeij et al., 1983). Ohaguro-shidoro Previous record. P (Vermeij et al., 1983). Family Strombidae 146. Lambis truncata sebae (Kiener) 142. Strombus (Canarium) microurceus (Kira) Rakudagai Yasagata-mukashi-tamoto Material examined. SARIGAN: ld ex., st. A, Material examined. GUGUAN: ld ex., st. C, BD, TK leg., CBM-ZM-106430, 16 May. ALA­ BD, TK leg., CBM-ZM-107945, 18 May. ALA­ MAGAN: 2d exs., st. A, BD, TK leg., CBM-ZM- MAGAN: ld ex., st. A, RI, AA leg., CBM-ZM- 106377, 18 May. 108290, 9 June. PAGAN: 14d exs., st. A, BD, TK Previous record. P & M (Vermeij et al., 1983). leg., CBM-ZM-106598, 24 May; 2d exs., st. C, BD, 147. Harpago chiragra (L.) AA, TF & HH leg., CBM-ZM-106470, 26 May; 1 Suijigai ex., st. C, RI, TK leg., CBM-ZM-107210, 26 May; Material examined. PAGAN: ld ex., st. C, BD, 1 ex., st. C, Dive, TK leg., CBM-ZM-107220, 26 TK leg., CBM-ZM-106518, 26 May; ld ex., st. C, May; 4 d exs., st. C, BD, TK leg., CBM-ZM- BD, TK leg., CBM-ZM-107613, 26 May. MAUG, 107612, 26 May; 11d exs., st. D, BD, TK leg., E: ld ex., st. A, BD, TK leg., CBM-ZM-106781, 2 CBM-ZM-106299, 27 May; 43d exs., st. E, BD, June. TK leg., CBM-ZM-106092, 24 May; 14d exs., st. Previous record. As (Vermeij et al., 1983). E, BD, AA leg., CBM-ZM-106208, 24 May; 2 exs., 148. Terebellum terebellum (L.) st. E, Dive, TK leg., CBM-ZM-107252, 27 May. Tonbogai AGRIHAN: ld ex., st. B, RI, AA leg., CBM-ZM- Previous record. P (Vermeij et al., 1983). 107087, 29 May; 3d exs., st. B, BD, TK leg., CBM-ZM-107844 & 107877, 29 May; 12d exs., Family Hipponicidae st. C, BD, TK leg., CBM-ZM-105967, 30 May. 149. Sabia acuta (Quoy & Gaimard) Previous record. P & AG (Vermeij et al., 1983). Atsu-kiku-suzume 143. Strombus (Canarium) mutabilis Swain­ Material examined. ANAT AHAN: 1 ex., st. A, son RI, TK leg., CBM-ZM-107577, 11 May. PAGAN: Mukashi-tamoto 2d exs., st. A, BD, TK leg., CBM-ZM-106596, 24 Material examined. ANAT AHAN: ld ex., st. May; ld ex., st. D, BD, TK leg., CBM-ZM-106733, D, Dive, TK leg., CBM-ZM-108236, 14 May. 24 May; 2d exs., st. E, BD, TK leg., CBM-ZM- ALAMAGAN: 2d exs., st. A , BD, TK leg., CBM­ 106114, 24 May; 1 ex., Dive, PS & TP leg., ZM-106378, 18 May. PAGAN: 6d exs., st. A, BD, CBM-ZM-106754, 25 May. MAUG, E:1 ex., st. C, TK leg., CBM-ZM-106597, 24 May; 5 exs., st. C, Dive, TK leg., CBM-ZM-107531, 4 June; 1 ex., st. Dive, TK leg., CBM-ZM-107209 & 107219, 26 D, Dive, TK leg., CBM-ZM-107537, 5 June. May; 3 d exs., st. C, BD, TK leg., CBM-ZM- MAUG, N: ld ex., north coast, Dive (3 m), TP 107611, 26 May; 4d exs., st. D, BD, TK leg., leg., CBM-ZM-107564, 3 June. CBM-ZM-106298,106692, 27 May; ld ex., st. E, Previous record. As S. conica (Schmacher) BD, TK leg., CBM-ZM-106091, 24 May; 2d exs., from AN, G, P, AG, AS & M (Vermeij et al., st. E, BD, AA leg., CBM-ZM-106207, 24 May; 7 1983). exs., st. E, Dive, TK leg., CBM-ZM-107251, 27 150. Cheilea tortilis (Reeve) May. AGRIHAN: 1 ex., st. C, BD, TK leg., CBM­ Shi wa-furin-chidori ZM-105968, 30 May. Material examined. PAGAN: ld ex., st. E, BD, Previous record. P (Vermeij et al., 1983). AA leg., CBM-ZM-106285, 24 May; ld ex., st. A, 144. Strombus (Canarium) dentatus L. BD, TK leg., CBM-ZM-106670, 24 May. Mitsuyubigai Material examined. ALAMAGAN: ld ex., st.

-136- Marine molluscs from the northern Mariana Islands

1983). Family Vanikoridae 158. Serpulorbis sp. A 151. Vanikoro acuta (Recluz) Material examined. ALAMAGAN: 2 exs., st. Previous record. P (Vermeij et al., 1983). A, RI, AA leg., CBM-ZM-107034, 19 May. 152. Vanikoro cancellata (Lamarck) PAGAN: 3d exs., st. E, BD, TK leg., CBM-ZM- Kagome-shironezumi 106094, 24 May; 3d exs., st. E, BD, AA leg., Previous record. P (Vermeij et al., 1983). CBM-ZM-106211, 24 May. 153. Vanikoro distans (Recluz) 159. Serpulorbis sp. B Kubire-shironezumi Material examined. ALAMAGAN: 3d exs., st. Material examined. GUGUAN: ld ex., st. C, A, BD, TK leg., CBM-ZM- 106374, 18 May. BD, TK leg., CBM-ZM-107947, 18 May. PAGAN: 2d exs., st. D, BD, TK leg., CBM-ZM- Previous record. G (Vermeij et al., 1983). 106689, 27 May; 2d exs., st. E, BD, TK leg., 154. Vanikoro gueriniana (Recluz) CBM-ZM-106095, 24 May. Itokake-shironezumi 160. Bivonia? sp. Material examined. ALAMAGAN: ld ex., st. Material examined. ALAMAGAN: 3 exs., st. A, RI, AA leg., CBM-ZM-108297, 9 June. B, Dive, TK leg., CBM-ZM-107048, 8 June; ld PAGAN: ld ex., st. E, BD, AA leg., CBM-ZM- ex., st. A, BD, TK leg., CBM-ZM-106375, 18 May. 106209, 24 May. AGRIHAN: ld ex., st. B, BD, PAGAN: ld ex., st. A, BD, TK leg., CBM-ZM- TK leg., CBM-ZM-107898, 29 May. 106590, 24 May; 2 exs., st. C, Dive, TK leg., 155. Vanikoro solida (Sowerby) CBM-ZM-107203, 26 May; ld ex., st. C, BD, TK Tama-shironezumi leg., CBM-ZM-106517, 26 May; 3d exs., st. D, Material examined. GUGUAN: ld ex., st. C, BD, TK leg., CBM-ZM-106296,6690, 27 May. BD, TK leg., CBM-ZM-107946, 18 May. PAGAN: AGRIHAN: 3d exs., st. C, BD, TK leg., CBM-ZM- ld ex., st. A, BD, TK leg., CBM-ZM-106569 & 105966, 30 May. MAUG: E, 2d exs., st. A, BD, 106669, 24 May. TK leg., CBM-ZM-106022, 2 June; 2 exs., st. B, Dive, TK leg., CBM-ZM-107545 & 107546, 5 Family Capulidae June. 156. Capulus batius Dunker 161. Dendropoma planorbis (Dunker) Kasen-chidori Mijin-mukadegai Material examined. AGRIHAN: ld ex., st. B, ANAT AHAN: 1 ex., st. C, RI, AA leg., CBM­ BD, TK leg., CBM-ZM-107897, 29 May. ZM-106886, 13 May. GUGUAN: ld ex., st. C, BD, TK leg., CBM-ZM-107987, 18 May. ALAMA­ Family Vermetidae GAN: 2 exs., st. B, Dive, TK leg., CBM-ZM- 157. Serpulorbis variabilis Hadfield & Kay 107049, 8 June. PAGAN: 2d exs., st. D, BD, TK Mikan-hebigai leg., CBM-ZM-106297 & 106691, 27 May; 4d Material examined. ANAT AHAN: 2 exs., st. exs., st. E, BD, TK leg., CBM-ZM-106096, 24 A, RI, TK leg., CBM-ZM-106836, 10 May; 2 exs., May; 8 d exs., st. C, BD, TK leg., CBM-ZM- st. D, RI, TK leg., CBM-ZM-106908, 14 May. 107601, 26 May. AGRIHAN: 2d exs., st. A, BD, ALAMAGAN: ld ex., st. A, BD, TK leg., CBM­ TK leg., CBM-ZM-105960, 30 May. ZM-106373, 18 May. PAGAN: 3d exs., st. E, BD, 162. Dendropoma cf. D. spiruliformis de TK leg., CBM-ZM-106093, 24 May; 4d exs., st. E, Serres BD, AA leg., CBM-ZM-106210, 24 May; ld ex., Material examined. GUGUAN: 4d exs., st. C, st. A, BD, TK leg., CBM-ZM-106589, 24 May; ld BD, TK leg., CBM-ZM-107988, 18 May. ex., st. C, BD, AA, TF & HH leg., CBM-ZM- 106469, 26 May. AGRIHAN: 2d exs., st. C, BD, Family Cypraeidae TK leg., CBM-ZM-105961, 105963, 30 May. 163. Cypraea (Erosaria) erosa L. MAUG, E: l ld exs., st. A, BD, TK leg., CBM-ZM- Komon-dakara 106023, 2 June; 5 exs., st. A, RI, TK leg., CBM­ Material examined. ANAT AHAN: ld ex., st. ZM-107 450, 2 June. A, BD, TK leg., CBM-ZM-106434, 11 May. Previous record. P, AS & M (Vermeij et al., PAGAN: ld ex., st. A, BD, TK leg., CBM-ZM-

-137- T. Kurozumi and A. Asakura

106607, 24 May; ld ex., st. A, BD, AA leg., MAUG, E: 14d exs., st. A, BD, TK leg., CBM-ZM- CBM-ZM-107156, 24 May; 9d exs., st. C, BD, TK 106028 & 107 444, 2 June. leg., CBM-ZM-106525 & 107605, 26 May; ld ex., Previous record. AN, S, G, AL, P, AG, M & U st. D, BD, TK leg., CBM-ZM-106300, 27 May; ld (Vermeij et al., 1983). ex., st. E, BD, TK leg., CBM-ZM-106102, 24 May; 166. Cypraea (Erosaria) labrolineata Gmelin 3d exs., st. E, BD, AA leg., CBM-ZM-106214, 24 Nashiji-dakara May; ld ex., st. F, BD, TK leg., CBM-ZM-106559, Material examined. PAGAN: ld ex., st. E, BD, 24 May. TK leg., CBM-ZM-106101, 24 May. Previous record. G, P & M (Vermeij et al., 167. Cypraea (Luria) isabella L. 1983). Yanagishibori-dakara 164. Cypraea (Erosaria) helvola L. Material examined. AN AT AHAN: 1 ex., st. C, Kamon-dakara RI, AA leg., CBM-ZM-106887, 13 May. ALA­ Material examined. GUGUAN: ld ex., st. C, MAGAN: 2d exs., st. A, BD, TK leg., CBM-ZM- TK leg., CBM-ZM-108312, 18 May. ALAMA­ 106389, 18 May. PAGAN: 3d exs., st. A, BD, TK GAN: 1 d ex., st. A, BD, TK leg., CBM-ZM- leg., CBM-ZM-106612, 24 May; 5d exs., st. C, BD, 106390, 18 May. PAGAN: 8d exs., st. A, BD, TK AA, TF & HH leg., CBM-ZM-106473, 26 May; leg., CBM-ZM-106606, 24 May; 6d exs., st. C, BD, 14d exs., st. C, BD, TK leg., CBM-ZM-106523 & TK leg., CBM-ZM-106520 & 107604, 26 May; 7 107610, 26 May; 3 exs., st. D, BD, TK leg., exs., st. D, BD, TK leg., CBM-ZM-106301 & CBM-ZM-106709, 27 May; 6d exs., st. E, BD, TK 106707, 27 May; 3d exs., st. E, BD, TK leg., leg., CBM-ZM-106106, 24 May; 7d exs., st. E, BD, CBM-ZM-106100, 24 May; 2d exs., st. E, BD, AA AA leg., CBM-ZM-106218, 24 May; 2 d exs., leg., CBM-ZM-106215, 24 May; ld ex., st. E, BD, Dive, PS leg., CBM-ZM-106738, 24 May; ld ex., TK leg., CBM-ZM-107277, 27 May. AGRIHAN: Dive, PS & TP leg., CBM-ZM-106753, 25 May; ld ex., st. C, BD, TK leg., CBM-ZM-105975, 30 2d exs., Dive, TP leg., CBM-ZM-106758, 27 May. May. MAUG, E: ld ex., st. A, BD, TK leg., CBM­ MAUG, E: 3d exs., st. A, BD, TK leg., CBM-ZM- ZM-106029, 2 June. MAUG, N & W: ld ex., Dive 106030, 2 June. URACAS: ld ex., st. A, RI, TK (5-lOm), TP leg., CBM-ZM-106790, 2 June. leg., CBM-ZM-107009, 6 June. Previous record. AN, P, AS & M (Vermeij et Previous record. AN, S, G, P, M & U (Vermeij al., 1983). et al., 1983). 165. Cypraea (Erosaria) poraria L. 168. Cypraea (Arabica) maculifera Schilder Ayame-dakara Kikko-dakara Material examined. AN AT AHAN: 1d ex., st. Material examined. ANATAHAN: ld ex., st. B, BD, TK leg., CBM-ZM-106450, 12 May. ALA­ A, BD, TK leg., CBM-ZM-106436, 11 May; ld MAGAN: 8d exs., st. A, BD, TK leg., CBM-ZM- ex., st. B, BD, TK leg., CBM-ZM-106451, 12 May; 106388, 18 May; 2d exs., st. A, BD, TK leg., 1 ex., st. B, RI, AA leg., CBM-ZM-106859, 12 CBM-ZM-106418, 9 June. PAGAN: 42d exs., st. May. ALAMAGAN: 30d exs., st. A, BD, TK leg., A, BD, TK leg., CBM-ZM-106605, 24 May; 6d CBM-ZM-106386, 18 May; 6d exs., st. A, BD, TK exs., st. C, BD, AA, TF & HH leg., CBM-ZM- leg., CBM-ZM-106415, 9 June; ld ex., NW coast, 106471, 26 May; 29d exs., st. C, BD, TK leg., Dive (10-15 m), TP leg., CBM-ZM-106806, 9 CBM-ZM-106519 &107603, 26 May; 1 ex., st. C, June. PAGAN: 3d exs., st. A, BD, TK leg., CBM­ Dive, TK leg., CBM-ZM-107207, 26 May; 17d ZM-106615, 24 May; ld ex., st. C, BD, AA, TF & exs., st. D, BD, TK leg., CBM-ZM-106302 & HH leg., CBM-ZM-106475, 26 May; 3d exs., st. C, 106706, 27 May; lld exs., st. E, BD, TK leg., BD, TK leg., CBM-ZM-106527, 26 May; 5d exs., CBM-ZM-106099, 24 May; 18d exs., st. E, BD, st. E, BD, TK leg., CBM-ZM-106097, 24 May; 7d AA leg., CBM-ZM-106216, 24 May; 2 exs., st. E, exs., st. E, BD, AA leg., CBM-ZM-106212, 24 Dive, TK leg., CBM-ZM-107250 & 107276, 27 May. AGRIHAN: 2d exs., st. C, BD, TK leg., May; 2d exs., Dive, PS & TP leg., CBM-ZM- CBM-ZM-105970, 30 May. ASUNCION: ld ex., 106748, 25 May. AGRIHAN: 5d exs., st. C, BD, Dive (10-15m), TP leg., CBM-ZM-106827, 1 TK leg., CBM-ZM-105972, 30 May; ld ex., west June. MAUG, E: 6d exs., st. A, BD, TK leg., coast, Dive, TP leg., CBM-ZM-106820, 30 May. CBM-ZM-106025, 2 June; 4 exs., st. A, RI, AA

-138- Marine molluscs from the northern Mariana Islands leg., CBM-ZM-107428, 2 June; 2 exs., st. A, RI, 107438, 2 June. MAUG, N: 3 exs., st. F, RI, AA TK leg., CBM-ZM-107451, 2 June. leg., CBM-ZM-107346, 3 June. MAUG, W: 12 Previous record. G, P, M & U (Vermeij et al., exs., st. E, RI, AA leg., CBM-ZM-107347 & 1983). 107494, 4 June. URACAS: 10 exs., st. A, RI, AA 169. Cypraea (Arabica) depressa Gray leg., CBM-ZM-107348, 6 June. Hime-yakushima-dakara Previous record. G, AL, P, Ag & M (Vermeij et Material examined. ANA T AHAN: 4d exs., st. al., 1983). A, BD, TK leg., CBM-ZM-106437, 11 May. ALA­ 171. Cypraea (Monetaria) moneta L. MAGAN: Id ex., st. A, BD, TK leg., CBM-ZM- Kiiro-dakara 106419, 9 June. PAGAN: 3d exs., st. C, BD, TK Material examined. Id ex., ANAT AHAN: st. leg., CBM-ZM-106526 & 107608, 26 May; ld ex., A, BD, TK leg., CBM-ZM-106433, 11 May; 1 ex., st. D, BD, TK leg., CBM-ZM-106712, 27 May; ld st. A, RI, AA leg., CBM-ZM-106847, 11 May. ex., Dive, PS & TP leg., CBM-ZM-106751, 25 ALAMAGAN: 2d exs., st. A, BD, TK leg., CBM­ May. ZM-106391, 18 May; 5d exs., st. A, BD, TK leg., Previous record. P (Vermeij et al., 1983). CBM-ZM-106417, 9 June; 1 ex., st. A, RI, AA 170. Cypraea (Mauritia) mauritiana L. leg., CBM-ZM-107064, 9 May. PAGAN: 4d exs., Hachijo-dakara st. A, BD, TK leg., CBM-ZM-106604, 24 May; 2 Material examined. ANAT AHAN: ld ex., st. exs., st. A, RI, AA leg., CBM-ZM-107155, 24 A, BD, TK leg., CBM-ZM-106438, 11 May; 1 ex .. May; 8 d exs., st. C, BD, TK leg., CBM-ZM- st. A, RI, AA leg., CBM-ZM-107333, 11 May; ld 106521, 107208 & 107602, 26 May; 26 exs., st. ex., st. B, BD, TK leg., CBM-ZM-106453, 12 May; D, BD, TK leg., CBM-ZM-106705, 27 May; 3d 5 exs., st. B, RI, AA leg., CBM-ZM-107334, 12 exs., st. E, BD, TK leg., CBM-ZM-106105, 24 May; 6 exs., st. C, RI, AA leg., CBM-ZM-107335, May; 1 d ex., Dive, PS & TP leg., CBM-ZM- 13 May; 8 exs., st. D, RI, TK leg., CBM-ZM- 106749, 25 May. MAUG, E: 1 ex., st. B, Dive, TK 107336, 14 May. SARIGAN: 15 exs., st. A, RI, leg., CBM-ZM-107547, 5 June. MAUG, W: 6 exs., AA leg., CBM-ZM-107337, 15 May. GUGUAN: 3 st. E, RI, AA leg., CBM-ZM-107 492, 4 June. exs., st. B, RI, AA leg., CBM-ZM-106943, 17 Previous record. AN, AL, P, AS & M (Vermeij May; 16 exs., st. B, RI, TK leg., CBM-ZM-106966, et al., 1983). 17 May; 10 exs., st. B, RI, AA leg., CBM-ZM- 172. Cypraea (Monetaria) moneta L. (monet­ 107338, 17 May. ALAMAGAN: 7 exs., st. A, RI, oides Iredale) AA leg., CBM-ZM-107339, 19 May; 12 exs., st. (Fusidaka-kiiro-dakara) A, RI, AA leg., CBM-ZM-107060 & 107349, 9 Material examined. PAGAN: 3d exs., st. D, BD, June. PAGAN: 2 exs., st. A, RI, AA leg., CBM­ TK leg., CBM-ZM-106303, 27 May. AGRIHAN: ZM-107160, 24 May; 3 exs., st. B, RI, AA leg., ld ex., st. C, BD, TK leg., CBM-ZM-105974, 30 CBM-ZM-107172, 25 May; 7 exs., st. C, RI, AA May. leg., CBM-ZM-107340, 26 May; 2d exs., st. C, BD, 173. Cypraea (Lyncina) lynx L. TK leg., CBM-ZM-107609, 26 May; ld ex., st. D, Hime- hos hi-dakara BD, TK leg., CBM-ZM-106306, 27 May; 4 exs., st. Material examined. PAGAN: ld ex., st. E, BD, D, RI, AA leg., CBM-ZM-107341, 27 May; ld ex., TK leg., CBM-ZM-106108, 24 May. Dive, TP leg., CBM-ZM-106757, 27 May. AGR­ Previous record. P, AL & M (Vermeij et al., IHAN: 15 exs., st. B, RI, AA leg., CBM-ZM- 1983). 107342, 29 May; ld ex., st. C, BD, TK leg., 174. Cypraea (Ponda) carneola L. CBM-ZM-107419, 30 May; ld ex.,W coast, Dive, Kuc him urasaki-dakara TP leg., CBM-ZM-106822, 31 May. ASUNCION: Material examined. AN AT AHAN: 1d ex., st. 4 exs., st. A, RI, AA leg., CBM-ZM-107343, 1 B, BD, TK leg., CBM-ZM-106452, 12 May. ALA­ June; ld ex., Dive (10-15m), TP leg., CBM-ZM- MAGAN: ld ex., st. A, BD, TK leg., CBM-ZM- 106826, 1 June; 1 ex., st. A, RI, J. Guery leg., 106393, 18 May. PAGAN: 3d exs., st. A, BD, TK CBM-ZM-107121, 1 June. MAUG, E: 8 exs., st. A, leg., CBM-ZM-106614, 24 May; 3d exs., st. C, BD, RI, AA leg., CBM-ZM-107344 & 107427, 2 June; AA, TF & HH leg., CBM-ZM-106474, 26 May; 4 exs., st. A, RI, TK leg., CBM-ZM-107345 & 3d exs., st. C, BD, TK leg., CBM-ZM-106524 &

-139- T. Kurozumi and A. Asakura

107607, 26 May; 4d exs., st. D, BD, TK leg., 24 May. AGRIHAN: 21d exs., st. C, BD, TK leg., CBM-ZM-106304 & 106710, 27 May; 2d exs., st. CBM-ZM-105971 & 107417, 30 May. MAUG, E: E, BD, AA leg., CBM-ZM-106217, 24 May; ld 7d exs., st. A, BD, TK leg., CBM-ZM-106026, 2 ex., Dive, PS & TP leg., CBM-ZM-106750, 25 June; 1 ex., north edge, RI, PS & TP leg., CBM­ May. AGRIHAN: ld ex., st. C, BD, TK leg., CBM­ ZM-107557, 3 June; 1 ex., south edge, RI, HH ZM-105971, 30 May. MAUG, E: 6 exs., st. A, BD, leg., CBM-ZM-107506, 4 June. MAUG, N: 2d TK leg., CBM-ZM-106027, 2 June. MAUG, N & exs., north coast, Dive (6-15 m), CBM-ZM- W: ld ex., Dive (5-lOm), TP leg., CBM-ZM- 106803, 5 June. MAUG, W: 1 ex., st. E, RI, AA 106789, 2 June. leg., CBM-ZM-107493, 4 June. URACAS: 2 exs., Previous record. G, P, Ag & M (Vermeij et al., st. A, RI, TK leg., CBM-ZM-106999 & 107008, 6 1983). June. 175. Cypraea (Ponda) schilderorum (Iredale) 181. Cypraea (Talostolida) teres Gmelin Okinawa-dakara E-dakara Material examined. ALAMAGAN: ld ex., st. Previous record. G (Vermeij et al., 1983). A, BD, TK leg., CBM-ZM-106392, 18 May. 182. Cypraea (Talparia) talpa L. 176. Cypraea (Mystaponda) vitellus L. Taru-dakara Hoshikinuta Material examined. GUGUAN: 3d exs., st. C, Previous record. P (Vermeij et al., 1983). Dive, TK leg., CBM-ZM-106990, 18 May. PA­ 177. Cypraea (Palmadusta) undata Lamarck GAN:, ld ex., Dive, PS leg., CBM-ZM-106737, 24 Ajiro-dakara May; 1 d ex., Dive (15 m), PS leg., CBM-ZM- Material examined. Id ex., PAGAN: st. A, BD, 1067 43, 26 May. TK leg., CBM-ZM-106611, 24 May. Previous record. P (Vermeij et al., 1983). 178. Cypraea (Palmadusta) contaminata 183. Cypraea (Chelycypraea) testudinaria L. Sowerby Murakumo-dakara K uroshio-dakara Material examined. AGRIHAN: ld ex., west Material examined. PAGAN: ld ex., st. A, BD, coast, Dive, TP leg., CBM-ZM-106823, 31 May. TK leg., CBM-ZM-106610, 24 May. ASUNCION: ld ex., Dive (10-15m), TP leg., 179. Cypraea (Purpuradusta) fimbriata CBM-ZM-106830, 1 June. Gmelin Previous record. P (Vermeij et al., 1983). Tsumamurasaki-me-dakara 184. Cypraea (Pustlaria) globulus L. Material examined. PAGAN: 4d exs., st. A, Meno-chidori-dakara BD, TK leg., CBM-ZM-106609, 24 May. PAGAN: Previous record. P & M (Vermeij et al., 1983). 9d exs., st. E, BD, TK leg., CBM-ZM-106103 & 185. Cypraea (Pustlaria) mediocris Schilder 106104, 24 May. PAGAN: 2d exs., st. E, BD, AA & Schilder leg., CBM-ZM-106221 & 106220, 24 May. Koge-chidori-dakara Previous record. P (Vermeij et al., 1983). Material examined. PAGAN: 1 ex., st. D, BD, 180. Cypraea (Ravitrona) caputserpentis L. TK leg., CBM-ZM-106711, 27 May. Hanamaruyuki 186. Cypraea (Staphylaea) staphylaea L. Material examined. ANAT AHAN: 2d exs., st. Same-dakara A, BD, TK leg., CBM-ZM-106435, 11 May. ALA­ Material examined. PAGAN: ld ex., st. E, BD, MAGAN: 17d exs., st. A, BD, TK leg., CBM-ZM- TK leg., CBM-ZM-106098, 24 May. 106387, 18 May; 6d exs., st. A, BD, TK leg., 187. Cypraea (Staphylaea) nucleus L. CBM-ZM-106416, 9 June. PAGAN: 6d exs., st. A, Ibo-dakara BD, TK leg., CBM-ZM-106608, 24 May; 8d exs., Material examined. PAGAN: 3d exs., st. E, BD, st. C, BD, AA, TF & HH leg., CBM-ZM-106472, AA leg., CBM-ZM-106222, 24 May; 2d exs., st. 26 May; 25d exs., st. C, BD, TK leg., CBM-ZM- A, BD, TK leg., CBM-ZM-106613, 24 May. 106522 & 107606, 26 May; 26d exs., st. D, BD, TK leg., CBM-ZM-106305 & 106708, 27 May; 2d Family Triviidae exs., st. E, BD, TK leg., CBM-ZM-106107, 24 188. Trivirostra oryza (Lamarck) May; ld ex., st. E, BD, AA leg., CBM-ZM-106213, Shiratama

-140- Marine molluscs from the northern Mariana Islands

Material examined. AGRIHAN: ld ex., st. C, BD, TK leg., CBM-ZM-105971, 30 May. Family Tonnidae 189. Trivirostra edgari (Shaw) 199. Tonna perdix (L.) Wasure-shiratama Uzuragai Material examined. PAGAN: 2d exs., st. A, Material examined. AGRIHAN: ld ex., west BD, TK leg., CBM-ZM-106616, 24 May; 6d exs., coast, Dive, TP leg., CBM-ZM-106819, 30 May. st. E, BD, TK leg., CBM-ZM-106111, 24 May; ld ex., st. E, BD, AA leg., CBM-ZM-106224, 24 May. Family Ranellidae 200. Cymatium (Septa) hepaticum (Roding) Family Eratoidae Juseira 190. Eratonea sulcifera (Sowerby) Material examined. ld ex., MAUG, W: st. E, Zakuro-gai-modoki RI, AA leg., CBM-ZM-108267, 4 June. Previous record. As Lachryma sulcifera from Previous record. P (Vermeij et al., 1983). G & P (Vermeij et al., 1983). 201. Cymatium (Septa) limberti (Roding) Hime-juseira Family Naticidae Material examined. PAGAN: ld ex., st. C, BD, 191. Mammila melanostomus (Gmelin) TK leg., CBM-ZM-107617, 26 May. Risugai 202. Cymatium (Septa) rubecula (L.) Previous record. As Polinices melanostomus Shojora from U (Vermeij et al., 1983). Material examined. PAGAN: ld ex., st. A, BD, 192. Natica bougei Sowerby TK leg., CBM-ZM-106603, 24 May; ld ex., st. D, Kanoko-dama BD, TK leg., CBM-ZM-106693, 27 May; ld ex., Material examined. PAGAN: ld ex., st. A, BD, st. C, BD, AA, TF & HH leg., CBM-ZM-106477, TK leg., CBM-ZM-106600, 24 May. 26 May; ld ex., st. C, BD, TK leg., CBM-ZM- 193. Natica sp. 107616, 26 May. Material examined. PAGAN: ld ex., st. E, BD, 203. Cymatium (Septa) pileare (L.) TK leg., CBM-ZM-106113, 24 May. Shinomaki 194. Tanea sagittata (Menke) Material examined. PAGAN: ld ex., st. E, RI, Hagino-tsuyu AA leg., CBM-ZM-108298, 24 May. Material examined. PAGAN: ld ex., st. A, BD, Previous record. P & AG (Vermeij et al., 1983). TK leg., CBM-ZM-106599, 24 May; 2d exs., st. E, 204. Cymatium (Gutturnium) muricinum BD, AA leg., CBM-ZM-106225, 24 May; ld ex., (Roding) st. E, Dive, TK leg., CBM-ZM-107281, 27 May. Shiobora 195. Notocochlis lurida (Philippi) Previous record. M (Vermeij et al., 1983). Hoshuno-tama 205. Cymatium (Cymatriton) nicobaricum Material examined. PAGAN: ld ex., st. E, BD, (Roding) TK leg., CBM-ZM-106112, 24 May. Mitsukado-bora 196. Naticidae sp. Material examined. ANAT AHAN: ld ex., st. Previous record. AN (Vermeij et al., 1983). A, RI, TK leg., CBM-ZM-108294, 27 May. ALA­ MAGAN: ld ex., st. A, BD, TK leg., CBM-ZM- Family Cassidae 106364, 18 May. PAGAN: ld ex., st. A, BD, TK 197. Casmaria ponderosa (Gmelin) leg., CBM-ZM-106602, 24 May; 4d exs., st. C, BD, Amegai TK leg., CBM-ZM-106528 & 107615, 26 May; 2d Material examined. PAGAN: ld ex., st. C, BD, exs., st. E, BD, AA leg., CBM-ZM-106227, 24 TK leg., CBM-ZM-107632, 26 May. May. AGRIHAN: ld ex., st. C, BD, TK leg., CBM­ Previous record. P (Vermeij et al., 1983). ZM-105979, 30 May. 198. Cassis cornutus (L.) Previous record. AG (Vermeij et al., 1983). To-kamuri 206. Cymatium (Lampusia) aquatilis (Reeve) Previous record. P & M (Vermeij et al., 1983). Satsuma-bora Material examined. PAGAN: ld ex., st. A, BD,

-141- T. Kurozumi and A. Asakura

TK leg., CBM-ZM-106601, 24 May; 5d exs., st. C, Ohaguro-okinishi BD, TK leg., CBM-ZM-106529 & 107614, 26 Material examined. ALAMAGAN: ld ex., st. May; 3d exs., st. C, BD, AA, TF & HH leg., A, BD, TK leg., CBM-ZM- 106363, 18 May. CBM-ZM-106476, 26 May; 3d exs., st. E, BD, TK PAGAN: 3d exs., st. C, BD, TK leg., CBM-ZM- leg., CBM-ZM-106115, 24 May; ld ex., st. E, BD, 106532 & 107619, 26 May. AGRIHAN: ld ex., AA leg., CBM-ZM-106226, 24 May; ld ex., Dive, st. C, BD, TK leg., CBM-ZM-105980, 30 May. PS leg., CBM-ZM-106739, 24 May. AGRIHAN: 214. Bursa (Lampadopsis) cruentata (Sow­ 2d exs., st. C, BD, TK leg., CBM-ZM-105978, 30 erby) May. MAUG, N: ld ex., st. F, RI, AA leg., CBM­ Shiwa-okinishi ZM-108263, 3 June. URACAS: ld ex., st. A, RI, Material examined. PAGAN: ld ex., st. C, BD, AA leg., CBM-ZM-108273, 6 June. TK leg., CBM-ZM-107620, 26 May. 207. Cymatium (Turritriton) labiosum (Wood) Family Cerithiopsidae Hime-mitsukado-bora 215. Jaculator sp. Material examined. URACAS: 1d ex., RI, AA Material examined. AGRIHAN: ld ex., st. B, leg., CBM-ZM-108274, 1 June. BD, TK leg., CBM-ZM-107882, 29 May. 208. Cymatium lotorium (L.) 216. Horologica sp. A Fujitsugai Material examined. GUGUAN: ld ex., st. C, Material examined. PAGAN: 2d exs., st. C, BD, BD, TK leg., CBM-ZM-107949, 18 May. TK leg., CBM-ZM-106530, 31, 26 May. 217. Horologica sp. B 209. Charania tritonis (L.) Material examined. GUGUAN: ld ex., st. C, Horagai BD, TK leg., CBM-ZM-108311, 18 May. Material examined. MAUG, E: ld ex., st. C, BD, TO leg., CBM-ZM-106788, 4 June. Family Triphoridae 210. Distorsio anus (L.) 218. Viriola elegans (Hinds) Shima-ibo-bora Madara-kiriore Material examined. ALAMAGAN: ld ex., st. Material examined. GUGUAN: 2d exs., st. C, A, RI, AA leg., CBM-ZM-108026, 9 June. BD, TK leg., CBM-ZM-107936, 18 May. 219. Viriola incisa (Pease) Family Bursidae Sabi-kiriore 211. Bursa (Colubrellina) granularis (Roding) Material examined. GUGUAN:ld ex., st. C, Iwakawa-une-bora BD, TK leg., CBM-ZM-107937, 18 May. Material examined. ANATAHAN: ld ex., st. 220. Viriola sp. A, RI, TK leg., CBM-ZM-108295, 11 May. ALA­ Material examined. AGRIHAN: ld ex., st. B, MAGAN: ld ex., st. A , BD, TK leg., CBM-ZM- BD, TK leg., CBM-ZM-107889, 29 May. 106379, 18 May. PAGAN: ld ex., st. C, BD, TK 221. Triphora hervieri (Kosuge) leg., CBM-ZM-107621, 26 May. MAUG, N: ld Heritori-murasaki-kiriore ex., st. F, RI, AA leg., CBM-ZM-108264, 3 June. Material examined. AGRIHAN: ld ex., st. B, Previous record. G & P (Vermeij et al., 1983). BD, TK leg., CBM-ZM-107888, 29 May. 212. Bursa (s.s.) bufonia dunkeri Kira 222. Triphora sp. Okinishi Material examined. AGRIHAN: Id ex., st. B, Material examined. ALAMAGAN: ld ex., st. BD, TK leg., CBM-ZM-107887, 29 May. A, BD, TK leg., CBM-ZM- 106366, 18 May. 223. Mastonia crassula (Martens) PAGAN: ld ex., st. C, BD, TK leg., CBM-ZM- Nezumi-kiriore 107618, 26 May. AGRIHAN: ld ex., st. B, RI, AA Material examined. AGRIHAN: Id ex., st. B, leg., CBM-ZM-108259, 29 May. BD, TK leg., CBM-ZM-107886, 29 May. Previous record. As B. bufonia (Gmelin) from 224. Mastonia monilifera (Hinds) AN & P (Vermeij et al., 1983). Mikeiro-kiriore 213. Bursa (Lampadopsis) rhodostoma (Sow­ Material examined. MAUG, E: 1 ex., st. B, erby) Dive, TK leg., CBM-ZM-107552, 5 June.

-142- Marine molluscs from the northern Mariana Islands

225. Mastonia sp. Material examined. PAGAN: ld ex., st. A, BD, Material examined. AGRIHAN: ld ex., st. B, TK leg., CBM-ZM-106679, 24 May. BD, TK leg., CBM-ZM-107885, 29 May. 226. Epiforis projecta (Laseron) Order N eogastropoda Chi bi-mi tsuk uc hi-kiriore Family Muricidae Material examined. GUGUAN: ld ex., st. C, 237. Chicoreus (Triplex) brunneus (Link) BD, TK leg., CBM-ZM-107938, 18 May. AGR­ Ganzeki-bora IHAN: 1 d ex., st. B, BD, TK leg., CBM-ZM- Previous record. M (Vermeij et al., 1983). 107883, 29 May. 238. Thais (Stramonita) armigera (Link) 227. Iniforis cf. I. joussaumei (Hervier) Shirakumogai Material examined. AGRIHAN: ld ex., st. B, Material examined. ANAT AHAN: lex., st. A, BD, TK leg., CBM-ZM-107884, 29 May. RI, AA leg., CBM-ZM-107573, 11 May. ALA­ 228. Iniforis cingulata (Pease) MAGAN: ld ex., st. A, BD, TK leg., CBM-ZM- Ebiiro-mitsukuchi-kiriore 106362, 18 May; 1d ex., st. A, BD, TK leg., Material examined. GUGUAN: Id ex., st. C, CBM-ZM-106420, 9 June. PAGAN: ld ex., st. D, BD, TK leg., CBM-ZM-107939, 18 May. BD, TK leg., CBM-ZM-106309, 27 May. 229. Iniforis concors (Hinds) Previous record. AN, G, P & M (Vermeij et al., Shiro-kiri ore 1983). Material examined. PAGAN: ld ex., st. E, 239. Thais (Thaisella) muricina (Blainville) Dive, TK leg., CBM-ZM-107282, 27 May. U ni-reishi-damashi Material examined. PAGAN: ld ex., st. C, RI, Family Janthinidae AA leg., CBM-ZM-108029, 26 May. 230. Janthina janthina (L.) 240. Mancinella hippocastanum (L.) Asagaogai Tsuno-tetsu-reishi Material examined. AGRIHAN: Id ex., st. C, Material examined. PAGAN: 3 exs., st. C, RI, BD, TK leg., CBM-ZM-107409, 30 May. AA leg., CBM-ZM-107180, 26 May. 241. Mancinella intermedia (Kiener) Family Epitoniidae Koi bo-tetsu-reishi 231. Gyroscala perplexa (Pease) Material examined. GUGUAN: ld ex., st. C, RI, Nejigai TK leg., CBM-ZM-106987, 18 May. PAGAN: ld Material examined. AGRIHAN: 4d exs., st. C, ex., st. C, BD, TK leg., CBM-ZM-107628, 26 May; BD, TK leg., CBM-ZM-105977 & 107412, 30 2d exs., st. D, BD, TK leg., CBM-ZM-106310 & May 106698, 27 May. AGRIHAN: ld ex., st. C, BD, 232. Laeviscala sp. TK leg., CBM-ZM-105984, 30 May. MAUG, E: Material examined. GUGUAN: ld ex., st. C, Id ex., st. A, BD, TK leg., CBM-ZM-106034, 2 BD, TK leg., CBM-ZM-107950, 18 May. PAGAN: June. URACAS: 2d exs., st. A, RI, AA leg., CBM­ 1d ex., st. E, BD, TK leg., CBM-ZM-106116, 24 ZM-108275, 6 June. May. Previous record. AN, G, P & M (Vermeij et al., 1983). Family Eulimidae 242. Mancinella tuberosa (Roding) 233. Pyramidelloides suta (Pilsbry) Tsuno-reishi Previous record. G (Vermeij et al., 1983). Previous record. G & P (Vermeij et al., 1983). 234. Balcis sp. 243. Mancinella bufo (Lamarck) Material examined. GUGUAN: ld ex., st. C, Taiwan-reishi BD, TK leg., CBM-ZM-107940, 18 May. Material examined. AGRIHAN: ld ex., st. C, 235. Echineulima robusta (Pease) BD, TK leg., CBM-ZM-105985, 30 May. Gangaze-yadorinina 244. Morula biconica (Blainville) Material examined. PAGAN: 1 ex., st. C, Dive, Komurasaki-reishi-damashi TK leg., CBM-ZM-107206, 26 May. Material examined. ANAT AHAN: 1 ex., st. B, 236. Eulimidae cf. Echineulima sp. RI, AA leg., CBM-ZM-106867, 12 May. GU-

-143- T. Kurozumi and A. Asakura

GUAN: 2 exs., st. C, BD, TK leg., CBM-ZM- leg., CBM-ZM-106695, 27 May. MAUG, E: ld 107955 & 107991, 18 May. PAGAN: 5d exs., st. ex., st. A, BD, TK leg., CBM-ZM-106033, 2 June. D, BD, TK leg., CBM-ZM-106312 & 106696, 27 248. Morula sp. May; ld ex., st. E, BD, AA leg., CBM-ZM-106229, Nippon-reishi-damashi 24 May; 2 exs., st. E, Dive, TK leg., CBM-ZM- Material examined. ANAT AHAN: 1 ex., st. C, 107254, 27 May. MAUG, E: 1 ex., st. C, Dive, TK RI, AA leg., CBM-ZM-106892, 13 May. AGR­ leg, CBM-ZM-107521, 4 June. IHAN: 1 d ex., st. C, BD, TK leg., CBM-ZM- Previous record. G, P & AS (Vermeij et al., 105990, 30 May. 1983). 249. Morula uva (Roding) 245. Morula granulata (Duclos) K uroibo-reishi-damashi Reishi-damashi Material examined. AN AT AHAN: 6 exs., st. B, Material examined. ANAT AHAN: 3 exs., st. RI, AA leg., CBM-ZM-106866, 12 May; 1 ex., st. A, RI, AA leg., CBM-ZM-106839, 10 May; 5 exs., C, RI, AA leg., CBM-ZM-106891, 13 May; 4 exs., st. A, RI, AA leg., CBM-ZM-106848 & 107571, st. D, Dive, TK leg., CBM-ZM-106922, 14 May. 11 May; 8 exs., st. B, RI, AA leg., CBM-ZM- SARIGAN: 1 ex., st. A, RI, AA leg., CBM-ZM- 106865, 12 May; 10 exs., st. C, RI, AA leg., 106937, 15 May. GUGUAN: 3 exs., st. B, RI, AA CBM-ZM-106890, 13 May. SARIGAN: 10 exs., leg., CBM-ZM-106949, 17 May; 4 exs., st. B, RI, st. A, RI, TK leg., CBM-ZM-106930, 16 May; 2 TK leg., CBM-ZM-106963, 17 May. ALAMA­ exs., st. A, RI, AA leg., CBM-ZM-106936, 15 GAN: 1 d ex., st. A, BD, TK leg., CBM-ZM- May. GUGUAN: 2 exs., st. B, RI, AA leg., CBM­ 106359, 18 May; 3 exs., st. A, RI, AA leg., CBM­ ZM-106950, 17 May; 4 exs., st. B, RI, TK leg., ZM-107027 & 107039, 19 May. ld ex., st. B, CBM-ZM-106962, 17 May. ALAMAGAN: 5 exs., Dive, TK leg., CBM-ZM-107051, 8 June; 2d exs., st. A, RI, AA leg., CBM-ZM-107072, 9 June. st. A, BD, TK leg., CBM-ZM-106421, 9 June. PAGAN: 5 exs., st. A, RI, AA leg., CBM-ZM- PAGAN: 2d exs., st. A, BD, TK leg., CBM-ZM- 107150, 24 May; 6 exs., st. C, RI, AA leg., CBM­ 106619, 24 May; 3d exs., st. C, BD, TK leg., ZM-107181, 26 May; 3 exs., st. D, RI, AA leg., CBM-ZM-107625, 26 May; 3d exs., st. D, BD, TK CBM-ZM-107187, 26 May; 8 exs., st. D, RI, TK leg., CBM-ZM-106311, 27 May; 16d exs., st. D, leg., CBM-ZM-107246, 27 May; ld ex., st. D, BD, BD, TK leg., CBM-ZM-106694, 27 May; ld ex., TK leg., CBM-ZM-106697, 27 May; ld ex., st. E, st. E, BD, TK leg., CBM-ZM-106120, 24 May; 10 BD, AA leg., CBM-ZM-106228, 24 May. AGR­ exs., st. E, Dive, TK leg., CBM-ZM-107253, 27 IHAN: 16 exs., st. B, RI, AA leg., CBM-ZM- May. AGRIHAN: 9 exs., st. B, BD, AA leg., CBM­ 107094, 29 May; 1d ex., st. C, BD, TK leg., ZM-107095, 29 May. MAUG, E: 6d exs., st. A, CBM-ZM-105987, 30 May. ASUNCION: ld ex., BD, TK leg., CBM-ZM-106032 & 107440, 2 June; st. A, RI, AA leg., CBM-ZM-107129, 1 June. 29 exs., st. C, Dive, TK leg., CBM-ZM-107520, 4 MAUG, E: 3 exs., st. A, RI, TK leg., CBM-ZM- June; 7 exs., st. D, Dive, TK leg., CBM-ZM- 107439 & 107452, 2 June. MAUG, W: 6 exs., st. 107538, 5 June; 2 exs., Dive, PS & TP leg., E, RI, AA leg., CBM-ZM-107465, 4 June. CBM-ZM-107558, 3 June. MAUG, W: 2 exs., st. URACAS: 2 exs., st. A, RI, AA leg., CBM-ZM- E, RI, AA leg., CBM-ZM-107466, 4 June. MAUG, 106996, 6 June. N: 2 exs., st. F, RI, AA leg., CBM-ZM-107473, 3 Previous record. AN, G, P & AS (Vermeij et al., June; 1 ex., north coast, Dive (3 m), TP leg., 1983). CBM-ZM-107563, 3 June. URACAS: 1 ex., st. A, 246. Morula spinosa (H. & A. Adams) RI, AA leg., CBM-ZM-107005, 9 June. Toge-reishi-damashi Previous record. AN, G, P, AG, AS & M (Ver­ Previous record. AN (Vermeij et al., 1983). meij et al., 1983). 247. Morula striata (Pease) 250. Maculotriton serrialis (Deshayes) Kuchimurasaki-reishi-damashi Gomafu-nukabora Material examined. ALAMAGAN: ld ex., st. Material examined. GUGUAN: 1 ex., st. B, RI, A, RI, AA leg., CBM-ZM-108285, 9 June. PA­ AA leg., CBM-ZM-108004, 18 May. PAGAN: 2 GAN: ld ex., st. C, BD, AA, TF & HH leg., exs., st. C, RI, AA leg., CBM-ZM-107183, 26 CBM-ZM-106478, 26 May; 2d exs., st. D, BD, TK May. MAUG, E: 1 ex., st. A, RI, TK leg., CBM-

-144- Marine molluscs from the northern Mariana Islands

ZM-107457, 2 June. URACAS: 3 exs., st. A, Dive, Murasaki-iga-reishi TK leg., CBM-ZM-107013, 6 June. Material examined. AN AT AHAN: 8 exs., st. Previous record. As M. bracteata (Hinds) from A, RI, AA leg., CBM-ZM-106838, 10 May; 4 exs., P & M (Vermeij et al., 1983). st. A, RI, AA leg., CBM-ZM-107572, 11 May; 15 251. Drupella cornus (Roding) exs., st. B, RI, AA leg., CBM-ZM-106860, 12 Shiro-reishi-damashi May; 3 exs., st. D, Dive, TK leg., CBM-ZM- Material examined. ALAMAGAN: 2d exs., st. 106923, 14 May. SARIGAN: 2 exs., st. A, RI, AA A, BD, TK leg., CBM-ZM-106361, 18 May. leg., CBM-ZM-106938, 15 May. GUGUAN: 5 PAGAN: ld ex., st. C, BD, AA, TF & HH leg., exs., st. C, Dive, TK leg., CBM-ZM-106981 & CBM-ZM-106481, 26 May; ld ex., st. D, BD, TK 106986, 18 May. ALAMAGAN: 2d exs., st. A, leg., CBM-ZM-106313, 27 May. AGRIHAN: ld BD, TK leg., CBM-ZM-106360, 18 May; 39 exs., ex., st. C, BD, TK leg., CBM-ZM-105988, 30 May. st. A, RI, AA leg., CBM-ZM-107025 & 107036, MAUG, E: 3 exs., north coast, Dive, PS & TP 19 May; 24 exs., st. A, RI, AA leg., CBM-ZM- leg., CBM-ZM-107559, 3 June. 107002, 9 June. PAGAN: 2d exs., st. A, BD, TK Previous record. As D. elata (Blainville) from leg., CBM-ZM-106617, 24 May; 3 exs., st. A, RI, P & M (Vermeij et al., 1983). AA leg., CBM-ZM-107152, 24 May; 5d exs., st. C, 252. Pascula ochrostoma (Blainville) BD, TK leg., CBM-ZM-107623, 26 May; 3d exs., Kinafu-reishi-damashi st. D, BD, TK leg., CBM-ZM-106308 & 106699, Material examined. PAGAN: ld ex., st. A, BD, 27 May; 1 ex., st. D, RI, TK leg., CBM-ZM- TK leg., CBM-ZM-106620, 24 May; ld ex., st. C, 107230, 27 May; 1d ex., st. E, BD, TK leg., BD, TK leg., CBM-ZM-107627, 26 May; 2d exs., CBM-ZM-106119, 24 May; 1 ex., st. E, Dive, TK st. E, BD, TK leg., CBM-ZM-106121, 24 May. leg., CBM-ZM-107263, 27 May; ld ex., Dive, PS MAUG, E: 1 ex., st. A, RI, AA leg., CBM-ZM- & TP leg., CBM-ZM-106752, 25 May. AGR­ 108031, 2 June. URACAS: 1 ex., st. A, RI, AA IHAN: 7d exs., st. C, BD, TK leg., CBM-ZM- leg., CBM-ZM-108033, 6 June. 105982, 30 May. ASUNCION: 1 ex., st. A, RI, Previous record. As Drupella ochrostoma from AA leg., CBM-ZM-107131, 1 June. MAUG, E: 2 P & AG (Vermeij et al., 1983). exs., st. A, RI, TK leg., CBM-ZM-107 453, 2 June; 253. Drupa (Ricinella) clathrata (Lamarck) 2 exs., South edge, HH leg., CBM-ZM-107508, 4 Hirokuchi-iga-reishi June; 1 ex., north coast, Dive, PS & TP leg., Material examined. AN AT AHAN: 2 exs., st. B, CBM-ZM-107561, 3 June. MAUG, N: 5 exs., st. F, RI, AA leg., CBM-ZM-106864, 12 May. PAGAN: RI, AA leg., CBM-ZM-107475, 3 June. URACAS: ld ex., st. D, RI, TK leg., CBM-ZM-108256, 27 6 exs., st. A, Dive, TK leg., CBM-ZM-107011, 6 May. ASUNCION: ld ex., st. A, RI, AA leg., June. CBM-ZM-108299, 1 June. MAUG, E: 2d exs., st. Previous record. AN, G, AL, P, AG & M (Ver­ A, BD, TK leg., CBM-ZM-106031, 2 June. meij et al., 1983). MAUG, N: 2 exs., st. F, RI, AA leg., CBM-ZM- 256. Drupa (s.s.) ricinus (L.) 107476, 3 June. URACAS: ld ex., st. A, RI, AA Kimadara-iga-reishi leg., CBM-ZM-108272, 6 June. Material examined. AN AT AHAN: 4 exs., st. B, Previous record. G, P, & M (Vermeij et al., RI, AA leg., CBM-ZM-106862, 12 May; 1 ex., st. 1983). C, RI, AA leg., CBM-ZM-106889, 13 May. ALA­ 254. Drupa (Ricinella) rubusidaeus Roding MAGAN: I ex., st. A, RI, AA leg., CBM-ZM- Aka-iga-reishi 107038, 19 May. PAGAN: Id ex., st. D, BD, TK Material examined. ALAMAGAN: ld ex., st. leg., CBM-ZM-106700, 27 May. AGRIHAN: ld A, RI, AA leg., CBM-ZM-108305, 9 June. PA­ ex., north coast, Dive, PS & TP leg., CBM-ZM- GAN: ld ex., st. D, RI, AA leg., CBM-ZM-108254, 106812, 29 May. MAUG, E: 2 exs., st. D, Dive, 27 May. MAUG, E: ld ex., st. C, Dive, TK leg., TK leg., CBM-ZM-107539, 5 June; 2 exs., north CBM-ZM-108292, 4 June. coast, Dive, PS & TP leg., CBM-ZM-107560, 3 Previous record. AN, P, AS & M (Vermeij et June. al., 1983). Previous record. AN, G, P, AS & M (Vermeij et 255. Drupa (s.s.) morum morum Roding al., 1983).

-145- T. Kurozumi and A. Asakura

257. Drupa (s.s.) albolabris (Blainville) ld ex., st. A, BD, TK leg., CBM-ZM-106618, 24 Shiro-iga-reishi May; ld ex., st. C, BD, AA, TF & HH leg., Material examined. ANAT AHAN: 5 exs., st. CBM-ZM-106480, 26 May; 3d exs., st. C, BD, TK A, RI, AA leg., CBM-ZM-106837, 10 May; 7 exs., leg., CBM-ZM-106533 & 107624, 26 May; 4d st. B, RI, AA leg., CBM-ZM-106861, 12 May; 5 exs., st. D, BD, TK leg., CBM-ZM-106701, 27 exs., st. C, RI, AA leg., CBM-ZM-106888, 13 May. AGRIHAN: ld ex., st. C, BD, TK leg., CBM­ May; 6 exs., st. D, Dive, TK leg., CBM-ZM- ZM-105983, 30 May. MAUG, E: 6 exs., st. C, 106911 & 106924, 14 May. SARIGAN: 30 exs., Dive, TK leg, CBM-ZM-107523, 4 June; 3 exs., st. A, RI, AA leg., CBM-ZM-106939, 15 May. st. D, Dive, TK leg, CBM-ZM-107540, 4 June; 1 GUGUAN: 4 exs., st. B, RI, AA leg., CBM-ZM- ex., north coast, Dive, PS & TP leg., CBM-ZM- 106948, 17 May; 16exs., st. B, RI, TK leg., CBM­ 107562, 3 June. ZM-106961, 17 May; 8 exs., st. C, RI, TK leg., Previous record. G, P & AG (Vermeij et al., CBM-ZM-106985, 18 May. ALAMAGAN: 1 d 1983). ex., st. A, BD, TK leg., CBM-ZM-106358, 18 May; 259. Nassa serta (Bruguiere) 1 ex., st. A, RI, AA leg., CBM-ZM-107026, 19 Hanawa-reishi May; 16 exs., st. A, RI, AA leg., CBM-ZM-107003 Material examined. ANAT AHAN: ld ex., st. & 107037, 19 May; 3 exs., st. A, RI, AA leg., A, BD, TK leg., CBM-ZM-106439, 11 May. CBM-ZM-107079, 9 June. PAGAN: 17 exs., st. A, PAGAN: ld ex., st. C, BD, TK leg., CBM-ZM- RI, AA leg., CBM-ZM-107151, 24 May; 3d exs., 107630, 26 May. MAUG, E: ld ex., st. A, RI, AA st. C, BD, AA, TF & HH leg., CBM-ZM-106479, leg., CBM-ZM-108301, 2 June. URACAS: ld ex., 26 May; 2 exs., st. C, RI, AA leg., CBM-ZM- st. A, RI, AA leg., CBM-ZM-108280, 6 June. 107179, 26 May; 1 ex., st. C, Dive, TK leg., Previous record. P (Vermeij et al., 1983). CBM-ZM-107221, 26 May; 9d exs., st. C, BD, TK 260. Cronia (Usilla) fusconigra (Pease) leg, CBM-ZM-107622, 26 May; 2 exs., st. D, RI, Shiinomi-reishi AA leg., CBM-ZM-107194, 27 May; 4d exs., st. D, Material examined. ANATAHAN: 1 ex., st. D, BD, TK leg., CBM-ZM-106307, 27 May; 21 exs., Dive, TK leg., CBM-ZM-106921, 14 May. SAR­ st. D, RI, TK leg., CBM-ZM-107231, 27 May; 4d IGAN: 4d exs., st. A, RI, AA leg., CBM-ZM- exs., st. E, BD, TK leg., CBM-ZM-106118, 24 108242, 15 May. GUGUAN: ld ex., st. B, RI, AA May; 1 ex., st. E, Dive, TK leg., CBM-ZM- leg., CBM-ZM-108245, 17 May. PAGAN: 2d exs., 107278, 27 May. AGRIHAN: 4 exs., st. B, BD, st. E, BD, TK leg., CBM-ZM-106122, 24 May; 1 AA leg., CBM-ZM-107096, 29 May; 30d exs., st. ex., st. C, Dive, TK leg., CBM-ZM-107222, 26 C, BD, TK leg., CBM-ZM-105981, 30 May. ASU­ May. AGRIHAN: 1 ex., st. B, RI, AA leg., CBM­ NCION: 1 ex., st. A, RI, AA leg., CBM-ZM- ZM-107093, 29 May; 6d exs., st. C, BD, TK leg., 107130, 1 June. MAUG, E: 7d exs., st. A, BD, TK CBM-ZM-105989, 30 May. MAUG, W: 12 exs., leg., CBM-ZM-107441 & 107454, 2 June; 1 ex., st. E, RI, AA leg., CBM-ZM-107467, 4 June. st. B, RI, TK leg., CBM-ZM-107548, 5 June; 1 ex., URACAS: 1 ex., st. A, RI, AA leg., CBM-ZM- st. C, Dive, TK leg., CBM-ZM-107522, 4 June; 4 106998, 6 June; 1 ex., st. A, Dive, TK leg, CBM­ exs., South edge, HH leg., CBM-ZM-107507, 4 ZM-107012, 6 June. June. MAUG, N: 61 exs., st. F, RI, AA leg., Previous record. AN & P (Vermeij et al., 1983). CBM-ZM-107474 & 107477, 3 June. MAUG, W: 261. Purpura persica (L.) 4 exs., st. E, RI, AA leg., CBM-ZM-107496 & Hososuji-tetsubora 107497, 4 June. URACAS: 10 exs., st. A, RI, AA Material examined. ANAT AHAN: 1 ex., st. A, leg., CBM-ZM-106997, 6 June; 28 exs., st. A, RI, RI, TK leg., CBM-ZM-106855, 11 May; 5 exs., st. TK leg., CBM-ZM-107010, 6 June. B, RI, AA leg., CBM-ZM-106877 & 107313, 12 Previous record. As D. arachnoides (Lamarck) May; 8 d exs., st. B, BD, TK leg., CBM-ZM- from S, P, AS & M (Vermeij et al., 1983). 106458, 14 May; 5 exs., st. C, RI, AA leg., CBM­ 258. Drupa (Drupina) grossularia Roding ZM-107314, 13 May; 3 exs., st. D, RI, TK leg., Kiiro-iga-reishi CBM-ZM-106912, 14 May. SARIGAN: 4 exs., st. Material examined. ANAT AHAN: 2 exs., st. B, A, RI, AA leg., CBM-ZM-107315, 15 May. RI, AA leg., CBM-ZM-106863, 12 May. PAGAN: GUGUAN: 1 ex., st. B, RI, AA leg., CBM-ZM-

-146- Marine molluscs from the northern Mariana Islands

107316, 17 May. ALAMAGAN: 6 exs., st. A, RI, 265. Coralliophila erosa (Roding) AA leg., CBM-ZM-107317, 19 May. PAGAN: 2d Kabuto-sangoyadori exs., st. A, BD, TK leg., CBM-ZM-106621, 24 Material examined. ALAMAGAN: ld ex., st. May; 14 exs., st. B, RI, AA leg., CBM-ZM- A, RI, AA leg., CBM-ZM-108249, 19 May. 107170, 25 May; 2d exs., st. C, BD, AA, TF & HH PAGAN: ld ex., st. E, BD, TK leg., CBM-ZM- leg., CBM-ZM-106482, 26 May; 5 exs., st. C, RI, 106124, 24 May. AA leg., CBM-ZM-107182, 26 May; ld ex., st. C, 266. Coralliophila squamoissima (Smith) BD, TK leg., CBM-ZM-107625, 26 May; ld ex., Kagome-sangoyadori st. E, BD, AA leg., CBM-ZM-106230, 24 May. Material examined. MAUG, E: ld ex., st. A, RI, AGRIHAN: 4 exs., st. A, RI, AA leg., CBM-ZM- TK leg., CBM-ZM-108032, 2 June. 107080, 28 May; 5 exs., st. B, BD, AA leg., 267. Quoyola madreporara (Sowerby) CBM-ZM-107097, 29 May; 3 exs., East coast, Hitoha-sangoyadori BD, TO & HH leg., CBM-ZM-107093, 30 May; 2d Material examined. GUGUAN: 1 ex., st. C, BD, exs., st. C, BD, TK leg., CBM-ZM-105986, 30 TK leg., CBM-ZM-107956, 18 May. PAGAN: ld May. ASUNCION: 7 exs., st. A, RI, AA leg., ex., st. A, BD, TK leg., CBM-ZM-106623, 24 May; CBM-ZM-107318, 1 June. MAUG, E: ld ex., st. ld ex., st. D, BO, TK leg., CBM-ZM-106702, 27 A, TK leg., CBM-ZM-106782, 2 June; 1 ex., st. A, May; ld ex., st. E, BO, TK leg., CBM-ZM-106125, AA leg., CBM-ZM-107319, 2 June. MAUG, W: 8 24 May; ld ex., st. E, BO, AA leg., CBM-ZM- exs., st. E, AA leg., CBM-ZM-107320 & 107495, 106231, 24 May. MAUG, E: ld ex., st. A, BO, TK 4 June. MAUG, N: 1 ex., st. F, RI, AA leg., leg., CBM-ZM-106035, 2 June; 2 exs., st. A, RI, CBM-ZM-107480, 3 June. URACAS: 5 exs., st. A, AA leg., CBM-ZM-107 434, 2 June; 3 exs., st. B, AA leg., CBM-ZM-107321, 6 June. Dive, TK leg., CBM-ZM-107549, 107550 & Previous record. AN, G, P, M & U (Vermeij et 107551, 5 June. MAUG, N: 4 exs., st. F, RI, AA al., 1983). leg., CBM-ZM-107478 & 107479, 3 June. Previous record. As Q. monodonta (Blain ville) Family Coralliophilidae from P & AG (Vermeij et al., 1983). 262. Coralliophila neritoidea (Lamarck) 268. Leptoconchus striatus Rtippell K uchim urasaki-sangoyadori Murogai Material examined. PAGAN: ld ex., st. A, BD, Material examined. GUGUAN: ld ex., st. C, TK leg., CBM-ZM-106622, 24 May; ld ex., st. E, BO, TK leg., CBM-ZM-107957, 18 May. AGR­ BD, TK leg., CBM-ZM-106123, 24 May. AGR­ IHAN: 1 d ex., st. B, BO, TK leg., CBM-ZM- IHAN: 2d exs., st. C, BD, TK leg., CBM-ZM- 107900, 29 May. 105991, 30 May. URACAS: 1 ex., st. A, Dive, TK leg., CBM-ZM-107014, 6 June. Family Columbellidae Previous record. As C. violacea (Kiener) from 269. Euplica borealis (Pilsbry) AN & P (Vermeij et al., 1983). Hime-maru-futokoro 263. Coralliophila bulbiformis (Conrad) Material examined. GUGUAN: ld ex., st. C, Hirase-toyotsu BO, TK leg., CBM-ZM-108312, 18 May. PAGAN: Material examined. ALAMAGAN: ld ex., st. ld ex., st. A, BD, TK leg., CBM-ZM-106624, 24 A, BD, TK leg., CBM-ZM-106367, 18 May. May; 7 d exs., st. E, BD, TK leg., CBM-ZM- PAGAN: ld ex., st. C, BD, AA, TF & HH leg., 106131 & 106237, 24 May; 1 ex., st. E, Dive, TK CBM-ZM-106483, 26 May; ld ex., st. C, BD, TK leg., CBM-ZM-107255, 27 May. AGRIHAN: 2d leg., CBM-ZM-107631, 26 May; ld ex., st. D, BD, exs., st. C, BO, TK leg., CBM-ZM-105994, 30 TK leg., CBM-ZM-106314, 27 May. AGRIHAN: May. 1 ex., st. C, BD, TK leg., CBM-ZM-105992, 30 270. Euplica deshayesi (Crosse) May. Heshage-futokoro 264. Coralliophila costularis (Lamarck) Previous record. P (Vermeij et al., 1983). Suji-sangoyadori 271. Euplica turturina (Lamarck) Material examined. PAGAN: ld ex., st. C, RI, Maru-futokoro AA leg., CBM-ZM-108030, 26 May. Previous record. P (Vermeij et al., 1983).

-147- T. Kurozumi and A. Asakura

272. Euplica varians (Sowerby) Chijimi-futokoro Family Buccinidae Material examined. GUGUAN: 6 exs., st. B, RI, 284. Caducifer decapitata (Reeve) AA leg., CBM-ZM-106955, 17 May. PAGAN: 2d Kogeiro-horadamashi exs., st. E, BD, TK leg., CBM-ZM-106134, 24 Material examined. GUGUAN: 2d exs., st. C, May. BD, TK leg., CBM-ZM-107962 & 107992, 18 Previous record. P (Vermeij et al., 1983). May. PAGAN: ld ex., st. A, BD, TK leg., CBM­ 273. Pyrene obtusa (Sowerby) ZM-106627, 24 May; 4d exs., st. E, BD, TK leg., Previous record. AS & M (Vermeij et al., CBM-ZM-106127, 24 May; ld ex., st. E, BD, AA 1983). leg., CBM-ZM-106232, 24 May. 274. Graphicomassa sp. Previous record. As C. decapitata fuscmacul­ Material examined. PAGAN: ld ex., st. A, BD, ata (Pease) from P (Vermeij et al., 1983). TK leg., CBM-ZM-106625, 24 May. 285. Prodotia iostoma (Gray in Griffiths & 275. Zafra dautzenbergi (Hervier) Pidgin) Unenashi-nominina Kagome-horadamashi Material examined. GUGUAN: 3 exs., st. C, Previous record. P (Vermeij et al., 1983 ). BD, TK leg., CBM-ZM-107958, 18 May. AGR­ 286. Pisania ignea (Gmelin) IHAN: 1 d ex., st. B, BD, TK leg., CBM-ZM- Bekkobai 107902, 29 May. Material examined. PAGAN: Id ex., st. D, BD, 276. Zafra virginea (Gould) TK leg., CBM-ZM-106760, 27 May. Previous record. As Seminella virginea from Previous record. G (Vermeij et al., 1983). AS & M (Vermeij et al., 1983). 287. Pollia fumosa (Dillwyn) 277. Zafra isomella (Duclos) Horadamashi Kagome-nominina Previous record. As Cantharus fumosus from Material examined. GUGUAN: lex., st. C, BD, M (Vermeij et al., 1983). TK leg., CBM-ZM-107960, 18 May. 288. Pollia undosa (L.) 278. Zafra cf. Z. validicosta (Habe) Sujiguro-horadamashi Material examined. AGRIHAN: 2d exs., st. B, Material examined. ANATAHAN: ld ex., st. BD, TK leg., CBM-ZM-107903, 29 May. A, BD, TK leg., CBM-ZM-106440, 11 May. SAR­ 279. Zafra cf. Z. ocellatula (Hervier) IGAN: 1 d ex., st. A, RI, AA leg., CBM-ZM- Material examined. GUGUAN: 1 ex., st. C, BD, 108238, 15 May. ALAMAGAN: ld ex., st. A, BD, TK leg., CBM-ZM-107958, 18 May. AGRIHAN: TK leg., CBM-ZM-106368, 18 May. PAGAN: 2d 3d exs., st. B, BD, TK leg., CBM-ZM-107901, 29 exs., st. A, BD, TK leg., CBM-ZM-106626, 24 May. May; ld ex., st. C, BD, TK leg., CBM-ZM-107633, 280. Zafra sp. 26 May; ld ex., st. E, BD, TK leg., CBM-ZM- Previous record. As Seminella sp. from AS 106126, 24 May. GUGUAN: 1 ex., st. B, RI, TK (Vermeij et al., 1983). leg., CBM-ZM-106965, 17 May. ASUNCION: 1 281. "Zafra" nanisca (Hervier) ex., st. A, RI, AA leg., CBM-ZM-107132, 1 June. Hososhiwa-nominina MAUG, W: 2 exs., st. E, RI, AA leg., CBM-ZM- Material examined. AGRIHAN: 2d exs., st. B, 107468, 4 June. BD, TK leg., CBM-ZM-107686, 29 May. Previous record. As Cantharus undosus from 282. Zafrona lifuana (Hervier) AN, G, P & M (Vermeij et al., 1983). Samehada-mugigai Material examined. GUGUAN: ld ex., st. C, Family Colubrariidae BD, TK leg., CBM-ZM-107961, 18 May. 289. Colubraria tortuosa (Reeve) 283. Pseudamycla rorida (Reeve) N ej ire-seko bai Miyori-yobai Material examined. AN AT AHAN: 1d ex., st. Material examined. PAGAN: 1 ex., st. E, Dive, A, BD, TK leg., CBM-ZM-106380, 18 May. TK leg., CBM-ZM-107279, 27 May. GUGUAN: ld ex., st. B, RI, TK leg., CBM-ZM- 108244, 17 May. ALAMAGAN: 2d exs., st. A,

-148- Marine molluscs from the northern Mariana Islands

RI, AA leg., CBM-ZM-108027, 18 May. PAGAN: l ld exs., st. E, BD, AA leg., CBM-ZM-106234, 24 ld ex., st. A, BD, TK leg., CBM-ZM-106628, 24 May. AGRIHAN: 1 ex., st. B, RI, AA leg., CBM­ May; ld ex., st. C, BD, TK leg., CBM-ZM-106536, ZM-107098, 29 May; 6d exs., st. B, BD, TK leg., 26 May. CBM-ZM-107906, 29 May. Previous record. As Nassarius pauperus from Family Nassariidae G, P & AS (Vermeij et al., 1983). 290. Telasco gaudiosus (Hinds) Hime-yobai Family Fasciolariidae Material examined. MAUG, W: ld ex., st. E, 294. Peristernia nassatula (Lamarck) RI, AA leg., CBM-ZM-108269, 4 June. Murasaki-tsunomata-modoki Previous record. As Nassarius gaudiosus from Material examined. ANAT AHAN: ld ex., st. P & AG (Vermeij et al., 1983). B, RI, AA leg., CBM-ZM-108235, 12 May. 291. Telasco velatus (Gould) PAGAN: 2d exs., st. A, BD, TK leg., CBM-ZM- Shiinomi-yobai 106632, 24 May; ld ex., st. C, BD, AA, TF & HH Material examined. PAGAN: 7d exs., st. A, leg., CBM-ZM-106484, 26 May; 5d exs., st. C, BD, BD, TK leg., CBM-ZM-106630, 24 May; 2d exs., TK leg., CBM-ZM-107635, 26 May; ld ex., Dive, st. C, BD, TK leg., CBM-ZM-106534, 26 May; ld PS leg., CBM-ZM-106741, 24 May. AGRIHAN: 1 ex., st. C, BD, TK leg., CBM-ZM-107634, 26 May; d ex., st. B, RI, AA leg., CBM-ZM-108258, 29 2d exs., st. D, BD, TK leg., CBM-ZM-106703, 27 May. MAUG, N: ld ex., st. F, RI, AA leg., CBM­ May; 17d exs., st. E, BD, TK leg., CBM-ZM- ZM-108265, 3 June. 106129, 24 May; 8d exs., st. E, BD, AA leg., Previous record. AN, AL, P, AS & M (Vermeij CBM-ZM-106233, 24 May; 1 ex., st. E, Dive, TK et al., 1983). leg., CBM-ZM-107280, 27 May. AGRIHAN: ld 295. Latirus polygonus (Gmelin) ex., st. B, BD, TK leg., CBM-ZM-107845, 29 May. Ryukyu-tsunomata MAUG, W: 6d exs., st. E, RI, AA leg., CBM-ZM- Material examined. ANATAHAN: ld ex., st. 107469, 4 June. URACAS: 2d exs., st. A, RI, AA A, BD, TK leg., CBM-ZM-106441, 11 May. leg., CBM-ZM-108284, 6 June. GUGUAN: ld ex., st. B, RI, AA leg., CBM-ZM- 292. Alectrion papillosus (L.) 108246, 17 May. ALAMAGAN: ld ex., st. A, BD, Same-mushiro TK leg., CBM-ZM-106370, 18 May. PAGAN: ld Material examined. GUGUAN: ld ex., st. A, ex., st. C, BD, TK leg., CBM-ZM-107637, 26 May; RI, TK leg., CBM-ZM-108296, 16 May. ALAMA­ ld ex., st. E, BD, TK leg., CBM-ZM-106130, 24 GAN: 2 d exs., st. A, RI, AA leg., CBM-ZM- May. AGRIHAN: ld ex., st. B, RI, AA leg., CBM­ 108291, 9 June. PAGAN: ld ex., st. A, BD, TK ZM-108262, 29 May; ld ex., st. C, BD, TK leg., leg., CBM-ZM-106631, 24 May; 2d exs., st. C, BD, CBM-ZM-105995, 30 May. ASUNCION: ld ex., TK leg., CBM-ZM-106535, 26 May; ld ex., Dive, st. A, RI, AA leg., CBM-ZM-108300, 1 June. TP leg., CBM-ZM-106759, 27 May. AGRIHAN: 1 MAUG, E: 2d exs., st. A, BD, TK leg., CBM-ZM- d ex., st. B, RI, AA leg., CBM-ZM-108261, 29 106037, 2 June. May. MAUG, E: ld ex., st. A, BD, TK leg., CBM­ Previous record. As L. barclayi (Reeve) from ZM-106036, 2 June. AN, G, P, AG, AS, M & U (Vermeij et al., 1983). Previous record. As Nassarius papillosus from 296. Latirus nodatus (Gmelin) P (Vermeij et al., 1983). Botto-tsunomata 293. Reticunassa pauperus (Gould) Material examined. PAGAN: ld ex., st. A, BD, Namihime-mushiro TK leg., CBM-ZM-106633, 24 May; 4d exs., st. C, Material examined. GUGUAN: 7 exs., st. C, BD, TK leg., CBM-ZM-106537 & 107636, 26 BD, TK leg., CBM-ZM-107963 & 93, 18 May. May; ld ex., st. D, BD, TK leg., CBM-ZM-106315, ALAMAGAN: 2d exs., st. A, RI, AA leg., CBM­ 27 May. MAUG, E: ld ex., st. A, RI, TK leg., ZM-108291, 9 June. PAGAN: 12d exs., st. A, BD, CBM-ZM-108304, 2 June. TK leg., CBM-ZM-106629, 24 May; ld ex., st. A, Previous record. AL, P, AG & U (Vermeij et al., RI, AA leg., CBM-ZM-107157, 24 May; 16d exs., 1983). st. E, BD, TK leg., CBM-ZM-106128, 24 May; 297. Latirus noumeensis (Crosse)

-149- T. Kurozumi and A. Asakura

Kinsuji-ko-tsunomata Hatai) Previous record. P (Vermeij et al., 1983). Material examined. AGRIHAN: 2d exs., st. B, BD, TK leg., CBM-ZM-108035, 29 May. Family Turbinellidae 305. Cystiscus sp. 298. Vasum ceramicum (L.) Material examined. UR ACAS: 10 exs., st. A, Oni-kobushi RI, AA leg., CBM-ZM-108011, 108014 & Material examined. ALAMAGAN: ld ex., st. 108018, 6 June. A, BD, TK leg., CBM-ZM-106365, 18 May. 306. Cystiscus? sp. PAGAN: ld ex., st. C, BD, TK leg., CBM-ZM- Material examined. AGRIHAN: 2d exs., st. B, 106538, 26 May; ld ex., st. D, BD, TK leg., BD, TK leg., CBM-ZM-108036, 29 May. CBM-ZM-106316, 27 May; 1 ex., st. E, Dive, TK 307. Volvarinella sp. leg., CBM-ZM-107261, 27 May. MAUG, E: 4 exs., Material examined. AGRIHAN: ld ex., st. B, st. D, Dive, TK leg., CBM-ZM-107541, 5 June. BD, TK leg., CBM-ZM-108037, 29 May. Previous record. AN, S, G, AL, P, AS, M & U (Vermeij et al., 1983). Family Mitridae 299. Vasum turbinellum (Reeve) 308. Mitra (Tiarella) stictica (Link) Ko-oni-kobushi Nishikino-kiba-fude Previous record. M (Vermeij et al., 1983). Previous record. P (Vermeij et al., 1983). 309. Mitra (Phaeomitra) imperialis Roding Family Olividae Beniumi-fude 300. Oliva (Annulatoliva) annulata Gmelin Previous record. M (Vermeij et al., 1983). Satsuma-bina 310. Mitra (Phaeomitra) coffea Schbert & Material examined. PAGAN: ld ex., st. C, BD, Wagner AA, TF & HH leg., CBM-ZM-106485, 26 May; K uriiro-fude 3d exs., st. C, BD, TK leg., CBM-ZM-106538, 26 Material examined. PAGAN: ld ex., st. D, BD, May; 2 d exs., st. D, BD, TK leg., CBM-ZM- TK leg., CBM-ZM-106328, 27 May; ld ex., st. D, 106317 & 106704, 27 May. BD, TK leg., CBM-ZM-106713, 27 May. Previous record. AN (Vermeij et al., 1983). 311. Mitra (Nebularia) chrysostoma Brode­ 301. Oliva (Acutoliva) duclosi Reeve rip Sarasa-makura Kogane-yatate Material examined. PAGAN: 2d exs., st. A, Previous record. P & M (Vermeij et al., 1983). BD, TK leg., CBM-ZM-106640, 24 May. AGR­ 312. Mitra (Nebularia) aurora flodidula Sow­ IHAN: 1 d ex., st. C, BD, TK leg., CBM-ZM- erby 105997, 30 May. M ushiro-fude Material examined. PAGAN: ld ex., st. A, BD, Family Harpidae TK leg., CBM-ZM-106634, 24 May; ld ex., st. C, 302. Harpa amouretta Roding BD, AA, TF & HH leg., CBM-ZM-106486, 26 Hime-shokkora May; 2 d exs., st. C, BD, TK leg., CBM-ZM- Material examined. PAGAN: ld ex., st. C, BD, 106540 & 107640, 26 May; ld ex., st. E, BD, TK TK leg., CBM-ZM-107638, 26 May. MAUG, E: 1 leg., CBM-ZM-106132, 24 May; 5d exs., st. D, d ex., st. A, BD, TK leg., CBM-ZM-106038, 2 BD, TK leg., CBM-ZM-106327 & 106717, 27 June. May. Previous record. S (Vermeij et al., 1983 ). Family Marginellidae 313. Mitra (Nebularia) ferruginea Lamarck 303. Kogomea cf. K. falsijaponica (Habe) Bekko-fude Material examined. GUGUAN: 7d exs., st. C, Material examined. PAGAN: 2d exs., st. C, BD, BD, TK leg., CBM-ZM-108314, 18 May. AGR­ TK leg., CBM-ZM-106541 & 107639, 26 May; ld IHAN: 2d exs., st. B, BD, TK leg., CBM-ZM- ex., st. C, BD, TK leg., CBM-ZM-, 26 May; ld ex., 107904, 29 May. st. D, BD, TK leg., CBM-ZM-106714, 27 May. 304. Cystiscus cf. C. japonica (Nomura & Previous record. G, P & AG (Vermeij et al.,

-150- Marine molluscs from the northern Mariana Islands

1983). ed as S. maculosa Reeve by Japanese malacol­ 314. Mitra (Nebularia) chrysalis Reeve ogists (Kuroda, 1960; Higo and Goto, 1993). Mayu-fude Cernohorsky (1976) also considered S. macul­ Previous record. M (Vermeij et al., 1983). osa as a synonym of S. litterata Lamarck, and 315. Mitra (Nebularia) coarctata Reeve he considered S. turturina as a forma of S. Kogitsune-fude auriculoides. However, S. turturina could be dis­ Material examined. PAGAN: ld ex., st. D, BD, tinguished at the species level its low spiral, TK leg., CBM-ZM-106329, 27 May. chestnut brown color and smaller white spots 316. Strigatella impressa (Anton) on the body whole. Kiiro-fude 320. Strigatella assimilis (Pease) Material examined. PAGAN: 2d exs., st. D, BD, Shirofu-yatate TK leg., CBM-ZM-106715, 27 May; 1 ex., st. E, Material examined. PAGAN: 5d exs., st. A, Dive, TK leg., CBM-ZM-107265, 27 May. BD, TK leg., CBM-ZM-106638, 24 May; 30d exs., Previous record. As S. pelliserpentis (Reeve) st. D, BD, TK leg., CBM-ZM-106324 & 106718, from P & AS (Vermeij et al., 1983). 27 May; Id ex., st. E, BD, AA leg., CBM-ZM- 317. Strigatella paupercula (L.) 106236, 24 May. AGRIHAN: 2d exs., st. C, BD, Nagashima-yatate TK leg., CBM-ZM-106000, 30 May. Previous record. G & P (Vermeij et al., 1983). 321. Strigatella sp. 318. Strigatella litterata (Lamarck) Previous record. AN, G & P (Vermeij et al., Midareshima-yatate 1983). Material examined. ANATAHAN: 1 ex., st. B, 322. Strigatella fastigium (Reeve) RI, AA leg., CBM-ZM-106868, 12 May. Kuriiro-yatate GUGUAN: 2 exs., st. B, RI, AA leg., CBM-ZM- Material examined. ALAMAGAN: I ex., st. A, 106951, 17 May. ALAMAGAN: 3 exs., st. A, RI, RI, AA leg., CBM-ZM-107040, 19 May. PAGAN: AA leg., CBM-ZM-107066, 9 June. PAGAN: ld Id ex., st. A, BD, TK leg., CBM-ZM-106637, 24 ex., st. C, BD, AA, TF & HH leg., CBM-ZM- May; ld ex., st. C, BD, AA, TF & HH leg., 106488, 26 May; 1 ex., st. C, RI, TK leg., CBM­ CBM-ZM-106487, 26 May; Id ex., st. D, BD, TK ZM-107211, 26 May. AGRIHAN: 4d exs., st. C, leg., CBM-ZM-106322, 27 May; 5d exs., st. D, BD, TK leg., CBM-ZM-105998, 30 May. MAUG, BD, TK leg., CBM-ZM-106716, 27 May; ld ex., E: ld ex., st. A, BD, TK leg., CBM-ZM-106039, 2 st. E, BD, AA leg., CBM-ZM-106235, 24 May. June; 3 exs., st. A, TK leg., CBM-ZM-107455, 2 Previous record. G, P & M (Vermeij et al., June. MAUG, W: 8 exs., st. E, AA leg., CBM-ZM- 1983). 107487, 4 June. URACAS: 1 ex., st. A, RI, AA 323. lmbricaria punctata (Swainson) leg., CBM-ZM-108015, 6 June. Tsunoiro-chochin-fude Previous record. AN, G & P (Vermeij et al., Material examined. PAGAN: Id ex., st. A, BD, 1983). TK leg., CBM-ZM-106636, 24 May; ld ex., st. C, 319. Strigatella turturina (Souverbie) BD, AA, TF & HH leg., CBM-ZM-106489, 26 Komon-yatate May; 3 d exs., st. D, BD, TK leg., CBM-ZM- Material examined. GUGUAN: 1 ex., st. C, RI, 106325 & 106719, 27 May. TK leg., CBM-ZM-106982, 18 May; 2 exs., st. C, Previous record. P & AS (Vermeij et al., 1983). RI, TK leg., CBM-ZM-106988, 18 May. ALAMA­ 324. lmbricaria olivaeformis (Swainson) GAN: 3 exs., st, A, RI, AA leg., CBM-ZM-107041, Makura-fude 19 May; I ex., st, B, Dive, TK leg., CBM-ZM- Previous record. P (Vermeij et al., 1983). 107052, 8 June. PAGAN: 2 exs., st. C, RI, TK 325. Swainsonia casta (Gmelin) leg., CBM-ZM-107212, 26 May; 5d exs., st. D, Zoge-fude BD, TK leg., CBM-ZM-106323, 27 May; 2d exs., Material examined. PAGAN: ld ex., st. A, BD, st. E, BD, TK leg., CBM-ZM-106133, 24 May. TK leg., CBM-ZM-106635, 24 May. AGRIHAN: Id ex., st. C, BD, TK leg., CBM-ZM- 326. Neocancilla clathrus (Gmelin) 105999, 30 May. Iwakawa-fude Remarks. This species has been often report- Material examined. Id ex., PAGAN: st. D, BD,

-151- T. Kurozumi and A. Asakura

TK leg., CBM-ZM-106326, 27 May. Hade-otomefude Material examined. PAGAN: 2d exs., st. D, BD, Family Costellariidae TK leg., CBM-ZM-106723, 27 May. 327. Arenimitra pacifica (Reeve) Previous record. P (Vermeij et al., 1983). Chijimi-hamazuto 340. Pusia microzonias (Lamarck) Material examined. PAGAN: 1 ex., st. E, Dive, K uro-otomefude TK leg., CBM-ZM-107262, 27 May. Material examined. PAGAN: ld ex., st. D, BD, Previous record. As Costellaria pacificum from TK leg., CBM-ZM-106321, 27 May. P (Vermeij et al., 1983). Previous record. AN & P (Vermeij et al., 1983). 328. Costellaria coronata (Helbling) 341. Pusia cf. P. microzonias (Lamarck) Kagome-tsukushi Material examined. PAGAN: ld ex., st. D, BD, Previous record. P (Vermeij et al., 1983). TK leg., CBM-ZM-106727, 27 May. 329. Costellaria cf. C. modesta (Reeve) 342. Pusia patriarchalis (Reeve) Material examined. PAGAN: ld ex., st. D, BD, Kuchibeni-otomefude TK leg., CBM-ZM-106721, 27 May. Material examined. GUGUAN: ld ex., st. C, 330. Costellaria cf. C. zelotypa (Reeve) BD, TK leg., CBM-ZM-108313, 18 May. ALA­ Material examined. PAGAN: ld ex., st. D, BD, MAGAN: ld ex., st. A, BD, TK leg., CBM-ZM- TK leg., CBM-ZM-106722, 27 May. 106369, 18 May. PAGAN: ld ex., st. C, BD, AA, 331. Costellaria sp. A TF & HH leg., CBM-ZM-106490, 26 May; 9d Material examined. PAGAN: ld ex., st. D, BD, exs., st. D, BD, TK leg., CBM-ZM-106319 & TK leg., CBM-ZM-106720, 27 May. 106726, 27 May; ld ex., st. E, BD, TK leg., 332. Costellaria sp. B CBM-ZM-106136, 24 May. Material examined. PAGAN: ld ex., st. D, BD, Previous record. G, P & AG (Vermeij et al., TK leg., CBM-ZM-106330, 27 May. 1983). 333. Pusia crocata (Lamarck) 343. Pusia speciosa (Reeve) Safuran-otomefude Otomefude Previous record. P (Vermeij et al., 1983). Material examined. PAGAN: ld ex., st. C, BD, 334. Pusia unifascialis (Lamarck) AA, TF & HH leg., CBM-ZM-106491, 26 May; Chasuji-tsukusi ld ex., st. D, BD, TK leg., CBM-ZM-106725, 27 Previous record. AL (Vermeij et al., 1983). May. 335. Pusia amabilis (Reeve) Previous record. P (Vermeij et al., 1983). Mame-otomefude 344. Pusia sp. Material examined. PAGAN: ld ex., st. A, BD, Previous record. P (Vermeij et al., 1983). TK leg., CBM-ZM-106639, 24 May; ld ex., st. D, BD, TK leg., CBM-ZM-106320, 27 May; 1 ex., st. Family Turridae D, RI, AA leg., CBM-ZM-107188, 26 May; ld ex., 345. Clavus sp. A st. E, BD, AA leg., CBM-ZM-106238, 24 May. Material examined. AGRIHAN: ld ex., st. C, Previous record. AN & P (Vermeij et al., 1983 ). BD, TK leg., CBM-ZM-106007, 30 May. 336. Pusia cancellarioides (Anton) 346. Clavus sp. B Arare-otomefude Material examined. PAGAN: ld ex., st. E, BD, Previous record. AG (Vermeij et al., 1983). TK leg., CBM-ZM-106135, 24 May. 337. Pusia consanguinea (Reeve) 34 7. Carinapex minutissima (Garrett) Miyori-otomefude Previous record. P (Vermeij et al., 1983). Material examined. PAGAN: 6d exs., st. D, BD, 348. Carinapex sp. TK leg., CBM-ZM-106318 & 106724, 27 May. Material examined. GUGUAN: 1 ex., st. C, BD, Previous record. P (Vermeij et al., 1983). TK leg., CBM-ZM-107964, 18 May. 338. Pusia infausta (Reeve) 349. Iredalea sp. Material examined. PAGAN: ld ex., st. D, BD, Previous record. P (Vermeij et al., 1983). TK leg., CBM-ZM-106728, 27 May. 350. Turris spectabilis (Reeve) 339. Pusia lauta (Reeve) Hanayaka-kudamaki

-152- Marine molluscs from the northern Mariana Islands

Material examined. PAGAN: ld ex., st. C, BD, AA, TF & HH leg., CBM-ZM-106493, 26 May. Family Conidae 351. Lienardia mighelsi Iredale & Tomlin 363. Conus (Virroconus) chaldaeus (Roding) Noshime-arabori-kuchikire Komadara-imo Material examined. GUGUAN: 1 ex., st. C, BD, Material examined. ANAT AHAN: 1 ex., st. A, TK leg., CBM-ZM-107966, 18 May. RI, AA leg., CBM-ZM-107574, 11 May. GU­ 352. Lienardia cf. L. mighelsi Iredale & Tomlin GUAN: I ex., st. B, RI, TK leg., CBM-ZM-106972, Previous record. P & M (Vermeij et al., 1983). 17 May. ALAMAGAN: ld ex., st. A, BD, TK leg., 353. Lienardia rubida (Hinds) CBM-ZM-106426, 9 June. MAUG, E: 2d exs., st. R ubi-futanashi-shaj iku A, BD, TK leg., CBM-ZM-106040, 2 June; 2 exs., Material examined. PAGAN: ld ex., st. A, BD, st. A, RI, TK leg., CBM-ZM- 107 456, 2 June. TK leg., CBM-ZM-106641, 24 May; ld ex., st. A, MAUG, W: 5 exs., st. E, RI, AA leg., CBM-ZM­ RI, AA leg., CBM-ZM-107158, 24 May; ld ex., st. l07489, 4 June. E, BD, AA leg., CBM-ZM-106239, 24 May. Previous record. P & M (Vermeij et al., 1983). 354. Lienardia sp. 364. Conus (Virroconus) coronatus Gmelin Previous record. P (Vermeij et al., 1983). J uzukake-sayagata-imo 355. Macteola interrupta (Reeve) Material examined. AN AT AHAN: 1 ex., st. C, Sashiko-tsubu RI, AA leg., CBM-ZM-106894, 13 May. GUGU­ Material examined. GUGUAN: I ex., st. C, BD, AN: 2 exs., st. B, RI, TK leg., CBM-ZM-106969, TK leg., CBM-ZM-107965, 18 May. AGRIHAN: 17 May. ALAMAGAN: 1 ex .. st. A, RI, AA leg., 2d exs., st. B, BD, TK leg., CBM-ZM-107905, 29 CBM-ZM-107068, 9 June. MAUG, E: ld ex .. st. C, May. Dive, TK leg., CBM-ZM-108293, 4 June. Previous record. As M segesta (Chenu) from P Previous record. P & M (Vermeij et al., 1983). (Vermeij et al., 1983). 365. Conus (Virroconus) barbadensis Hwass 356. Mitromorpha (Anarithma) metula (Hinds) Kasumi-sayagata-imo Sizuku-nina Material examined. GUGUAN: 5 exs., st. B, RI, Material examined. AGRIHAN: Id ex., st. B, TK leg., CBM-ZM-106968, 17 May. ALAMA­ BD, TK leg., CBM-ZM-107687, 29 May. GAN: 3 d exs .. st. A, BD, TK leg., CBM-ZM- 357. Microdaphne trichodes Dall 106401, 18 May. PAGAN: 2d exs .. st. C. BD, TK Material examined. GUGUAN: I ex., st. C, BD, leg., CBM-ZM-106543 & 107645, 26 May; 3d TK leg., CBM-ZM-107967, 18 May. exs., st. D, BD, TK leg., CBM-ZM-106341 & 358. Trionoturris cumingii (Powys) I 06762, 27 May; 1d ex .. st. E, BD, TK leg., Oriire-fude-shajiku CBM-ZM-106248, 24 May. AGRIHAN: ld ex., st. Material examined. PAGAN: ld ex., st. E, BD, C, BD, TK leg., CBM-ZM-107416. 30 May. AA leg., CBM-ZM-106243, 24 May. MAUG, E: 2d exs., st. A, BD, TK leg., CBM-ZM- 359. Daphnella ornata (Hinds) 106044, 2 June; 3 exs., st. C, Dive, TK leg., Fuiri-fude-shajiku CBM-ZM-107524, 4 June. URACAS: I ex., st. A, Material examined. PAGAN: ld ex., st. E, BD, RI, AA leg., CBM-ZM-107001, 6 June. AA leg., CBM-ZM-106241, 24 May. 366. Conus (Virroconus) miliaris Hwass 360. Daphnella varicosa (Souverbie) Benifuji-sayagata-imo Une-fude-shajiku Previous record. AN, G, AL, P, AG, AS & M Material examined. PAGAN: ld ex., st. E, BD, (Vermeij et al., 1983). AA leg., CBM-ZM-106240, 24 May. 367. Conus ( Virroconus) ebraeus L. 361. Daphnella flammea (Hinds) Madara-imo Hoso-fude-shajiku Material examined. 1 ex., ANAT AHAN: st. B, Material examined. PAGAN: ld ex., st. E, BD, RI, AA leg., CBM-ZM-106870, 12 May. GU­ AA leg., CBM-ZM-106242, 24 May. GUAN: I ex .. st. B. RI. TK leg., CBM-ZM-106971. 362. Daphnella sp. 17 May. ALAMAGAN: 2d exs .. st. A, BD, TK Previous record. As Tritonoturris sp. from G leg., CBM-ZM-106406, 18 May; 1 ex .. st. A, RI, (Vermeij et al., 1983). AA leg., CBM-ZM-107043, 19 May; 2 exs .. st. A,

-153- T. Kurozurni and A. Asakura

RI, AA leg., CBM-ZM-107067, 9 June.PAGAN: 1 A, RI, AA leg., CBM-ZM- 108234, 11 May. d ex., st. D, BD, TK leg., CBM-ZM-106767, 27 GUGUAN: 1 ex., st. B, RI, TK leg., CBM-ZM- May; 1 ex., st. E. RI, TK leg., CBM-ZM-107258, 106970, 17 May. ALAMAGAN: 7 exs., st. A, RI, 27 May. MAUG, E: ld ex., st. A, BD, TK leg., AA leg., CBM-ZM-107070, 9 June. PAGAN: 2d CBM-ZM-106041, 2 June. exs., st. A, BD, TK leg., CBM-ZM-106643, 24 Previous record. AN & P (Vermeij et al., 1983). May; ld ex., st. C, BD, TK leg., CBM-ZM-107646, 368. Conus (Virroconus) fulgetrum Sowerby 26 May; 7d exs., st. D, BD, TK leg., CBM-ZM- Sayagata-imo 106339 & 106763, 27 May; 7 exs., st. E, Dive, Material examined. MAUG, E: ld ex., st. A, TK leg., CBM-ZM-107257, 27 May. AGRIHAN: BD, TK leg., CBM-ZM-106051, 2 June. ld ex., st. B, RI, AA leg., CBM-ZM-107100, 29 Previous record. P (Vermeij et al., 1983). May. MAUG, E: 2d exs., st. A, BD, TK leg., 369. Conus (Virroconus) musicus Hwass CBM-ZM-106048, 2 June. Gakufu-imo Previous record. AN, S, G, P & AG (Vermeij et Material examined. PAGAN: ld ex., st. D, BD, al., 1983). TK leg., CBM-ZM-106340, 27 May; ld ex., st. D, 372. Conus (Virgiconus) distans Hwass BD, TK leg., CBM-ZM-106766, 27 May. lbokaba-imo Previous record. P & AG (Vermeij et al., 1983). Material examined. MAUG, E: ld ex., st. A, 370. Conus (Virroconus) nanus Sowerby BD, TK leg., CBM-ZM-106783, 2 June. Shiro-seiron-imo Previous record. G & AG (Vermeij et al., 1983). Material examined. AN AT AHAN: 1 ex., st. B, 373. Conus (Virgiconus) lividus Hwass RI, AA leg., CBM-ZM-106869, 12 May. ALA­ Iboshima-imo MAGAN: 3d exs., st. A, BD, TK leg., CBM-ZM- Material examined. ALAMAGAN: ld ex., st. 106403, 18 May; 3 exs., st. A, RI, AA leg., CBM­ A, RI, AA leg., CBM-ZM-108251, 19 May. ZM-107042, 19 May; 3 exs., st. A, RI, AA leg., PAGAN: ld ex., st. E, BD, AA leg., CBM-ZM- CBM-ZM-107069, 9 June. PAGAN: 9d exs., st. A, 106244, 24 May. AGRIHAN: 4d exs., st. C, BD, BD, TK leg., CBM-ZM-106642, 24 May; 4d exs., TK leg., CBM-ZM-106003, 30 May. MAUG, E: st. A, RI, AA leg., CBM-ZM-107195, 27 May; ld ld ex., st. A, BD, TK leg., CBM-ZM-106045, 2 ex., st. C, BD, AA, TF & HH leg., CBM-ZM- June. 106494, 26 May; 4d exs., st. C, BD, TK leg., Previous record. AN, G, AL & P (Vermeij et al., CBM-ZM-106542 & 107647, 26 May; 8 exs., st. 1983). C, Dive, TK leg., CBM-ZM-107214, 26 May; 32d 374. Conus (Virgiconus) sanguinolentus exs., st. D, BD, TK leg., CBM-ZM-106338 & Quoy & Gaimard 106764, 27 May; ld ex., st. E, BD, TK leg., Nise-iboshima-imo CBM-ZM-106139, 24 May; 5d exs., st. E, BD, TK Material examined. ANAT AHAN: ld ex., st. leg., CBM-ZM-106247, 24 May; 15 exs., st. E, A, BD, TK leg., CBM-ZM-106442, 11 May; ld Dive, TK leg., CBM-ZM-107256, 27 May. AGR­ ex., st. A, BD, TK leg., CBM-ZM-106454, 12 May. IHAN: 1 d ex., st. B, RI, AA leg., CBM-ZM- GUGUAN: 1 ex., st. B, RI, TK leg., CBM-ZM- 107099, 29 May; 8d exs., st, C, BD, TK leg., 106973, 17 May. ALAMAGAN: 8d exs., st. A, CBM-ZM-106006, 30 May. MAUG, E: 3d exs., st. BD, TK leg., CBM-ZM-106397, 18 May. PAGAN: A, BD, TK leg., CBM-ZM-106053, 2 June; 3 exs., ld ex., st. D, BD, TK leg., CBM-ZM-106333, 27 st. C, RI, TK leg., CBM-ZM-107525, 4 June. May; Id ex., st. E, BD, AA leg., CBM-ZM-107691, MAUG, W: 1 ex., st. E, RI, AA leg., CBM-ZM- 24 May; 1 ex., st. E, Dive, TK leg., CBM-ZM- 107488, 4 June. URACAS: 3 exs., st. A, RI, AA 107259, 27 May. AGRIHAN: Id ex., st. C, BD, leg., CBM-ZM-107000 & 108019, 6 June; 9 exs., TK leg., CBM-ZM-107414, 30 May. MAUG, E: 1 st. A, Dive, TK leg., CBM-ZM-107015, 6 June. ex., st. C, Dive, TK leg., CBM-ZM-107528, 4 Previous record. AN, S, G, P, AG, AS, M & U June; 2 exs., st. D, Dive, TK leg., CBM-ZM- (Vermeij et al., 1983). 107543, 5 June. 371. Conus (Virroconus) sponsalis Hwass Previous record. G & P (Vermeij et al., 1983). Hanawa-imo 375. Conus (Virgiconus) moreleti Crosse Material examined. ANATAHAN: ld ex., st. Ogokuda-imo

-154- Marine molluscs from the northern Mariana Islands

Material examined. ALAMAGAN: 3d exs., st. 108239, 15 May. ALAMAGAN: 9d exs., st. A, A, BD, TK leg., CBM-ZM-106400, 18 May. BD, TK leg., CBM-ZM-106396, 18 May. PAGAN: PAGAN: ld ex., st. C, AA, TF & HH leg., CBM­ Id ex., st. A, BD, TK leg., CBM-ZM-106645, 24 ZM-106898, 26 May; 2d exs., st. C, BD, TK leg., May; 2d exs., st. C, BD, AA, TF & HH leg., CBM-ZM-106331 & 107644, 26 May; 2d exs., st. CBM-ZM-106495, 26 May; 2d exs., st. D, BD, TK D, BD, TK leg., CBM-ZM-106768, 27 May; I ex., leg., CBM-ZM-106336 & 106774, 27 May; I ex., st. E, Dive, TK leg., CBM-ZM-107260, 27 May. st. E, Dive, TK leg., CBM-ZM-107284, 27 May. MAUG, E: 2d exs., st. A, BD, TK leg., CBM-ZM- MAUG, E: Id ex., st. A, BD, TK leg., CBM-ZM- 106052, 2 June; 1 ex., st. C, Dive, TK leg., CBM­ 10604 7, 2 June; 2 exs., st. C, Dive, TK leg., ZM-107530, 4 June. CBM-ZM-107527, 4 June; 3 exs., st. D, Dive, TK Previous record. AN, G, P & AS (Vermeij et al., leg., CBM-ZM-107542, 5 June. MAUG, N & W: 1983). Id ex., Dive (5-10 m), TP leg., CBM-ZM-106795, 376. Conus (Virgiconus) balteatus Sowerby 2 June. Beni-itadaki-imo Previous record.. AN, G, AL, P, AG, AS, M & U Material examined. ALAMAGAN: 2d exs., st. (Vermeij et al., 1983). A, BD, TK leg., CBM-ZM-106424, 9 June. 382. Conus (Rhizoconus) rattus Hwass Previous record. AN, AL & AG (Vermeij et al., Haiiro-minashi 1983). Material examined. ANAT AHAN: 2d exs., st. 377. Conus (Virgiconus) flavidus Lamarck B, BD, TK leg., CBM-ZM-106455, 12 May; I ex., Kinutsukatsugi-imo st. B, RI, AA leg., CBM-ZM-106871, 12 May; I Material examined. ALAMAGAN: 4d exs., st. ex., st. C, RI, AA leg., CBM-ZM-106893, 13 May. A, BD, TK leg., CBM-ZM-106399, 18 May; 2d GUGUAN: Id ex., st. B, RI, AA leg., CBM-ZM- exs., st. A, BD, TK leg., CBM-ZM-106423, 9 June. 10824 7, 17 May. ALAMAGAN: 12d exs., st. A, PAGAN: Id ex., st. C, BD, TK leg., CBM-ZM- BO, TK leg., CBM-ZM-106395, 18 May; 1 ex., st. 107643, 26 May; 4d exs., st. D, BD, TK leg., A, RI, AA leg., CBM-ZM-107032, 19 May; I ex., CBM-ZM-106332 & I 06769, 27 May; 2d exs., st. st. A, RI, AA leg., CBM-ZM-107071, 9 June. E, BD, TK leg., CBM-ZM-106137, 24 May; Id ex., PAGAN: 2d exs., st. A, BD, TK leg., CBM-ZM- st. E, BD, TK leg., CBM-ZM-106245, 24 May; Id 106644, 24 May; 5d exs., st. C, BD, TK leg., ex., st. E, Dive, TK leg., CBM-ZM-107283, 27 CBM-ZM-106544 & 107642, 26 May; 2d ex., st. May. AGRIHAN: 3d exs., st. C, BD, TK leg., C, AA, TF & HH leg., CBM-ZM-106897, 26 May; CBM-ZM-106002, 30 May; Id ex., st. B, AA leg., 7d exs., st. D, BD, TK leg., CBM-ZM-106335 & CBM-ZM-107101, 29 May. MAUG, E: 2d exs., st. I 06775, 27 May. AGRIHAN: 2d exs., st. C, BD, A, BD, TK leg., CBM-ZM-106042, 2 June; 3 exs., TK leg., CBM-ZM-106004 & 107415, 30 May. st. C, Dive, TK leg., CBM-ZM-107529, 4 June. MAUG, E: 3d exs., st. A, BD, TK leg., CBM-ZM- Previous record.. AN, G, P, AG, AS & M 106043, 2 June; I ex., st. C, Dive, TK leg., CBM­ (Vermeij et al., 1983). ZM-107526, 4 June. URACAS: I ex., st. A, RI, 378. Conus (Virgiconus) frigidus Reeve AA leg., CBM-ZM-108020, 6 June. I ex., st. A, Fukura-kinukatsugi-imo Dive, TK leg., CBM-ZM-107016, 6 June. Previous record. P & AG (Vermeij et al., 1983). Previous record. S, G, AL, P, AG, AS & M 379. Conus ( Virgiconus) virgo L. (Vermeij et al., 1983). Otome-imo 383. Conus (Rhizoconus) pertusus Hwass Previous record. G (Vermeij et al., 1983). Barafu-imo 380. Conus (Stephanoconus) varius L. Previous record. G (Vermeij et al., 1983). Murakumo-imo 384. Conus (Rhizoconus) capitaneus L. Previous record. P (Vermeij et al., 1983). Sarasa-minashi 381. Conus (Rhizoconus) miles L. Material examined. PAGAN: Id ex., st. D, BD, Yanagishibori-imo TK leg., CBM-ZM-106773, 27 May. Material examined. ANAT AHAN: Id ex., st. Previous record. AL (Vermeij et al., 1983). B, BD, TK leg., CBM-ZM-106456, 12 May. SAR­ 385. Conus (Rhizoconus) vexillus Gmelin IGAN: 2d exs., st. A, RI, AA leg., CBM-ZM- Kaba-minashi

-155- T. Kurozumi and A. Asakura

Material examined. PAGAN: ld ex., st. D, BD, Material examined. ALAMAGAN: ld ex., st. TK leg., CBM-ZM-106772, 27 May. A, BD, TK leg., CBM-ZM-106410, 18 May. 386. Conus (Dauciconus) vitulinus Hwass PAGAN: ld ex., st. A, BD, TK leg., CBM-ZM- Sarasa-modoki 106647, 24 May; 2d exs., st. C, BD, TK leg., Material examined. ALAMAGAN: ld ex., st. CBM-ZM-107650, 26 May; 3d exs., st. D, BD, TK A, BD, TK leg., CBM-ZM-106411, 18 May. leg., CBM-ZM-106776, 27 May. PAGAN: ld ex., st. C, BD, TK leg., CBM-ZM- Previous record. AN, G, P, AS & M (Vermeij et 107649, 26 May. al., 1983). 387. Conus (Dauciconus) litoglyphus Hwass 396. Conus (Hermes) terebra Born Naga-sarasa-minashi Itomaki-imo Previous record. AN, G, AL & P (Vermeij et al., Material examined. ALAMAGAN: 2d exs., st. 1983). A, BD, TK leg., CBM-ZM-106404, 18 May. 388. Conus (Leptoconus) generalis L. 397. Conus (Hermes) circumcisus Born Akashima-minashi Naga-bekko-imo Material examined. PAGAN: ld ex., st. C, BD, Material examined. GUGUAN: ld ex., Dive, TK leg., CBM-ZM-107648, 26 May. MAUG, E: PS leg., CBM-ZM-106992, 18 May. 2d exs., st. A, BD, TK leg., CBM-ZM-106784, 2 398. Conus (Hermes) luteus Sowerby June. Sonare-imo Previous record. P & AG (Vermeij et al., 1983). Material examined. MAUG, E: ld ex., st. A, 389. Conus (s.s.) marmoreus L. BD, TK leg., CBM-ZM-106049, 2 June. Nanyo-kuro-minashi 399. Conus (Darioconus) magnificus Reeve Previous record. AN (Vermeij et al., 1983). Naga-ajiro-imo 390. Conus (s.s.) bandanus Hwass Material examined. AGRIHAN: Id ex., st. C, Kuro-minashi BD, TK leg., CBM-ZM-107418, 30 May. Material examined. ALAMAGAN: 2d exs., st. Previous record. P & M (Vermeij et al., 1983). A, BD, TK leg., CBM-ZM-106402, 18 May. 400. Conus (Darioconus) canonicus Hwass Previous record. AN, AL & P (Vermeij et al., Hime-tagayasan-minashi 1983). Material examined. ALAMAGAN: 2d exs., st. 391. Con us (Rhombus) imperialis L. A, BD, TK leg., CBM-ZM-106405, 18 May. Mikado-minashi PAGAN: ld ex., st. C, BD, AA, TF & HH leg., Material examined. ANAT AHAN: ld ex., st. CBM-ZM-106497, 26 May; ld ex., st. E, BD, TK A, BD, TK leg., CBM-ZM-106444, 11 May. ALA­ leg., CBM-ZM-106141, 24 May. AGRIHAN: ld MAGAN: ld ex., st. A, BD, TK leg., CBM-ZM- ex., st. C, BD, TK leg., CBM-ZM-106001, 30 May. 106409, 18 May. MAUG, E: ld ex., st. A, BD, TK Previous record. P & AG (Vermeij et al., 1983). leg., CBM-ZM-106046, 2 June. 401. Conus (Darioconus) aulicus L. Previous record. AG & M (Vermeij et al., Tsubo-imo 1983). Material examined. PAGAN: 2d exs., st. D, BD, 392. Conus (Lithoconus) tessulatus Born TK leg., CBM-ZM-106777, 27 May. AGRIHAN: Harushagai ld ex., north coast, Dive, TP leg., CBM-ZM- Previous record. AG (Vermeij et al., 1983). 106816, 29 May. ASUNCION: ld ex., north west 393. Conus (Lithoconus) leopardus Roding coast, Dive (15 m), TP leg., CBM-ZM-106829, 7 Kurofumodoki June. Material examined. MAUG, E: ld ex., st. A, Previous record. P (Vermeij et al., 1983). BD, TK leg., CBM-ZM-106054, 2 June. 402. Conus (Chelyconus) catus Hwass 394. Conus (Lithoconus) litteratus L. Arare-imo Anbon-kurozame Material examined. ANATAHAN: ld ex., st. Material examined. ALAMAGAN: ld ex., st. A, BD, TK leg., CBM-ZM-106443, 11 May; ld A, BD, TK leg., CBM-ZM-106425, 9 June. ex .. st. B, BD, TK leg., CBM-ZM-106457, 12 May. 395. Conus (Puncticulis) pulicarius Hwass SARIGAN: ld ex .. st. A, RI, AA leg., CBM-ZM- Gomafu-imo 108240, 15 May. ALAMAGAN: 22d exs., st. A,

-156- Marine molluscs from the northern Mariana Islands

BD, TK leg., CBM-ZM-106394, 18 May; 3d exs., ex., st. A, BD, TK leg., CBM-ZM-106649, 24 May; st. A, BD, TK leg., CBM-ZM-106422, 9 June. 2d exs., st. C, BD, TK leg., CBM-ZM-107651, 26 PAGAN: 3d exs., st. A, BD, TK leg., CBM-ZM- May; ld ex., st. E, BD, TK leg., CBM-ZM-106249, 106646, 24 May; ld ex., st. A, AA leg., CBM-ZM- 24 May. AGRIHAN: ld ex., north coast, Dive, 107159, 24 May; 1d ex., st. C, BD, AA, TF & HH TP leg., CBM-ZM-106815, 29 May. leg., CBM-ZM-106496, 26 May; 8d exs., st. C, BD, Previous record. P (Vermeij et al., 1983). TK leg., CBM-ZM-106545, 106771 & 107625, 26 406. Conus (Gastridium) obscurus Sowerby May; l ld exs., st. D, BD, TK leg., CBM-ZM- Murasaki-anboina 106337, 27 May; 5d exs., st. E, BD, TK leg., Material examined. PAGAN: ld ex., st. C, BD, CBM-ZM-106138 & 106246, 24 May. AGR­ TK leg., CBM-ZM-107653, 26 May; 3d exs., st. E, IHAN: 4d exs., st. C, BD, TK leg., CBM-ZM- BD, TK leg., CBM-ZM-106142 & 106251, 24 106005, 30 May; ld ex., north coast, Dive, PS & May. TP leg., CBM-ZM-106813, 29 May. MAUG, E: 1 Previous record. P (Vermeij et al., 1983). d ex., st. A, BD, TK leg., CBM-ZM-106050, 2 June; 1 d ex., st. A, BD, TK leg., CBM-ZM- Family Terebridae 106785, 2 June; 1 ex., st. A, RI, AA leg., CBM­ 407. Hastula (Hastulina) solida (Deshayes) ZM-107429, 2 June; 1 ex., South edge, RI, HH Go ban-take leg, CBM-ZM-107505, 4 June. MAUG, W: 1 ex., Material examined. PAGAN: 2d exs., st. D, BD, st. E, RI, AA leg., CBM-ZM-107490, 4 June. TK leg., CBM-ZM-106343 & 106779, 27 May. MAUG, N: 1 ex., st. F, RI, AA leg., CBM-ZM- Previous record. AN (Vermeij et al., 1983). 107481, 3 June. 408. Hastula (s.s.) strigillata (L.) Previous record. AN, P & AG (Vermeij et al., Shichiku-modoki 1983). Material examined. PAGAN: ld ex., st. D, BD, 403. Conus (Dendroconus) striatus L. TK leg., CBM-ZM-106778, 27 May. Nishiki-minashi Previous record. P (Vermeij et al., 1983). Material examined. ALAMAGAN: ld ex., st. 409. Hastula (lmpages) stylata (Hinds) A, BD, TK leg., CBM-ZM-106408, 18 May. Kuchibiro-take PAGAN: ld ex., st. C, BD, AA, TF & HH leg., Material examined. PAGAN: 1d ex., st. E, BD, CBM-ZM-106498, 26 May; ld ex., Dive, PS leg., AA leg., CBM-ZM-106252, 24 May. CBM-ZM-106744, 25 May. 410. Terebra (Decorihastula) afflnis Gray Previous record. P & AG (Vermeij et al., 1983). Mushiro-take 404. Conus (Gastridium) tulipa L. Previous record. P (Vermeij et al., 1983). Shiro-anboina 411. Terebra (Dimidacus) laevigata (Gray) Material examined. 3d exs., ALAMAGAN: st. Hoso-niku-take A, BD, TK leg., CBM-ZM-106398, 18 May. Previous record. AS (Vermeij et al., 1983). PAGAN: ld ex., st. A, BD, TK leg., CBM-ZM- 412. Terebra (Oxymeris) felina (Dillwyn) 106648, 24 May; ld ex., st. C, BD, AA, TF & HH Zoge-take leg., CBM-ZM-106499, 26 May; ld ex., st. C, BD, Previous record. AS (Vermeij et al., 1983). TK leg., CBM-ZM-, 26 May; 4d exs., st. C, BD, TK 413. Terebra (Oxymeris) crenulata (L.) leg., CBM-ZM-106546 & 107652, 26 May; ld ex., Kiba-take st. E, BD, TK leg., CBM-ZM-106250, 24 May; ld Previous record. G & P (Vermeij et al., 1983). ex., st. F, BD, TK leg., CBM-ZM-106560, 26 May. 414. Terebra (Subula) dimidiata (L.) AGRIHAN: ld ex., north coast, Dive, PS & TP Beni-take leg., CBM-ZM-106814, 29 May. MAUG, E: 1 ex., Previous record. P & M (Vermeij et al., 1983). st. A, RI, AA leg., CBM-ZM-107430, 2 June. Previous record. P & M (Vermeij et al., 1983). Subclass Heterobranchia 405. Conus (Gastridium) geographus L. Order Heterostropha Anboina Family Orbitestellidae Material examined. GUGUAN: ld ex., Dive, 415. Orbitestella regina Kay PS leg., CBM-ZM-106991, 18 May. PAGAN: ld Previous record. G, AS & M (Vermeij et al.,

-157- T. Kurozumi and A. Asakura

1983). Previous record. G, P & M (Vermeij et al., 1983). Family Architectonicidae Subclass Opisthobranchia 416. Philippia radiata (Roding) Order Cephalaspidea Ko-guruma Family Hydatinidae Material examined. GUGUAN: 2d exs., st. C, BO, TK leg., CBM-ZM-107968, 18 May. 430. Micromelo guamensis (Quoy & Gaimard) 417. Heliacus dorsuosus (Hinds) Konshibori Kuriiro-nawame-guruma Previous record. P (Vermeij et al., 1983). Material examined. AGRIHAN: ld ex., st. B, BD, TK leg., CBM-ZM-107907, 29 May. Family Scaphandridae 418. Heliacus sp. 431. Cylichna sp. Material examined. PAGAN: ld ex., st. E, BO, Previous record. G (Vermeij et al., 1983). TK leg., CBM-ZM-106117, 24 May. Family Acteocinidae Family Rissoellidae 432. Acteocina hawaiensis Pilsbry 419. Risoella sp. Previous record. G & M (Vermeij et al., 1983). Material examined. GUGUAN: 30 exs., st. C, 433. Acteocina sp. RI, AA leg., CBM-ZM-108003, 18 May. Previous record. M (Eldridge et al., 1977).

Family Omalogyridae Family Aglaj idae 420. Omalogyra japonica (Habe) 434. Chelidonura hirundinina Q. & G. Mijin-wadachigai Nishiki-tsubamegai Previous record. G & AS (Vermeij et al., 1983). Previous record. M (Eldridge et al., 1977). 435. Chelidonura inornata Baba Family Pyramidellidae Ohaguro-tsu bamegai 421. Miralda cf. M. scopulorum Watson Material examined. PAGAN: 1 ex., Dive (5 m). Previous record. G (Vermeij et al., 1983). PS leg., CBM-ZM-107190, 24 May. 422. Miralda sp. Material examined. GUGUAN: ld ex., st. C, Family Gastropteridae BD, TK leg., CBM-ZM-107969, 18 May. 436. Gastropteron flavum Tokioka & Baba 423. Pyrgulina sp. Kiiro-umikocho Material examined. AGRIHAN: Id ex., st. B, Previous record. M (Eldridge et al., 1977). BO, TK leg., CBM-ZM-107908, 29 May. 424. Odostomella sp. Family Bullidae Material examined. GUGUAN: Id ex., st. B, RI, 437. Bulla ditficilis Habe AA leg., CBM-ZM-108005, 18 May; ld ex., st. C, Hime-natumegai BO, TK leg., CBM-ZM-107972, 18 May. Material examined. PAGAN: Id ex., st. A, BO, 425. Styloptygma sp. A TK leg., CBM-ZM-1066671, 24 May. Material examined. GUGUAN: ld ex., st. C, BD, TK leg., CBM-ZM-107970, 18 May. Family Atyidae 426. Styloptygma sp. B 438. Diniatys dentifer (A. Adams) Material examined. GUGUAN: ld ex., st. C, Kiba-kaikogai BO, TK leg., CBM-ZM-107971, 18 May. Material examined. GUGUAN: 9 exs., st. B, RI, 427. Pyramidellidae sp. A AA leg., CBM-ZM-108007, 17 May; 7d exs., st. C, Previous record. G (Vermeij et al., 1983). BD, TK leg., CBM-ZM-107973, 18 May. PAGAN: 428. Pyramidellidae sp. B 1 ex., st. E, Dive, TK leg., CBM-ZM-108028, 6 Previous record. G, AS & M (Vermeij et al., June. URACAS: 1 ex., st. A, RI, TK leg., CBM­ 1983). ZM-107019, 6 June. 429. Pyramidellidae sp. C 439. Limulatys sp.

-158- Marine molluscs from the northern Mariana Islands

Material examined. PAGAN: ld ex., st. E, BD, AA leg., CBM-ZM-107482, 2 June. URACAS: 1 TK leg., CBM-ZM-106144, 24 May; 1d ex., st. A, ex., st. A, RI, AA leg., CBM-ZM-107002, 6 June. BD, TK leg., CBM-ZM-106650, 24 May. Previous record. M (Eldridge et al., 1977) & 440. A tys sp. AN, G, P & AS (Vermeij et al., 1983). Previous record. G (Vermeij et al., 1983). 448. Lathophthalmus sp. 441. Atys? sp. Material examined. AGRIHAN: ld ex., st. B, Previous record. M (Eldridge et al., 1977). BD, TK leg., CBM-ZM-107909, 29 May. 442. Lamprohaminoea cymbalum (Quoy & Gaimard) Family Retusidae Migaki-budogai 449. Retusa (Ventomnestia) bizonata A. Adams Material examined. ANAT AHAN: I ex., st. A, Hade-yamamayugai RI, AA leg., CBM-ZM-106849, 11 May. GU­ Material examined. GUGUAN: 2 exs., st. B, RI, GUAN: 1 ex., st. C, RI, TK leg., CBM-ZM-106989, AA leg., CBM-ZM-108008, 17 May. 18 May. ALAMAGAN: 2 exs., st. A, RI, AA leg., 450. Retusa sp. CBM-ZM-107073, 9 June. Previous record. G & AS (Vermeij et al., 1983). Previous record. As Haminoea cymbalum from AN, G & AS (Vermeij et al., 1983) & M (Eldridge Order Runcinacea et al., 1977). Family Runcinidae 443. Haloa flavescens (A. Adams) 451. Ilbia mariana Hoff & Carson Ao-budogai Previous record. P & M (Hoff & Carlson, 1990) Material examined. PAGAN: ld ex., st. E, BD, and as /. sp. from M (Eldridge et al., 1977). AA leg., CBM-ZM-106253, 24 May. 444. Haloa sp. Order Sacoglossa Material examined. PAGAN: ld ex., st. E, BD, Family Juliidae AA leg., CBM-ZM-108233, 24 May. 452. Julia exqusita Gould 445. Haminoea sp. A Material examined. GUGUAN: 2d exs., st. C, Previous record. M (Eldridge et al., 1977). BD, TK leg., CBM-ZM-107974, 18 May. AGR­ 446. Haminoea sp. B IHAN: 1 d ex., st. B, BD, TK leg., CBM-ZM- Previous record. M (Eldridge et al., 1977). 107910, 29 May. Previous record. G & AS (Vermeij et al., 1983). Family Smargdinellidae 453. Julia cf. J. zebra Kawaguti 447. Smaragdinella calyculata (Broderip & Material examined. GUGUAN: 2d exs., st. C, Sowerby) BD, TK leg., CBM-ZM-107974, 18 May. Midorigai Material examined. AN AT AHAN: 1 ex., st. A, Family Caliphyllidae RI, AA leg., CBM-ZM-106895, 12 May; 29 exs., 454. Cyerce sp. st. B, RI, AA leg., CBM-ZM-106872, 12 May; 1 Previous record. M (Eldridge et al., 1977). ex., st. B, RI, TK leg., CBM-ZM-106878, 12 May; 1 ex., st. D, RI, TK leg., CBM-ZM-106913, 14 Family Hermaeidae May. GUGUAN: 3 exs., st. C, RI, TK leg., CBM­ 455. Ercolania smaragdina Baba ZM-106984, 18 May. PAGAN: 1 ex., st. A, RI, Tamamiru-umiushi AA leg., CBM-ZM-107161, 24 May; 4 exs., st. C, Previous record. As Hermaeina smaragdina RI, AA leg., CBM-ZM-107184, 26 May. AGR­ from M (Eldridge et al., 1977). IHAN: 3 exs., st. A, RI, AA leg., CBM-ZM- 456. Ercolania sp. 107081, 28 May; 7d exs., st. C, BD, TK leg., Previous record. M (Eldridge et al., 1977). CBM-ZM-107410, 30 May. ASUNCION: 9 exs., st. A, RI, AA leg., CBM-ZM-107133, I June. Family Elysiidae MAUG, E: 7 exs., st. A, RI, AA leg., CBM-ZM- 457. Elysia bayeri Marcus 107431. 2 June; 1 ex., st. A, RI, TK leg., CBM­ Previous record. M (Eldridge et al., 1977). ZM-107458, 2 June. MAUG. N: 9 exs., st. F, RI, 458. Elysia gracilis Risbec

-159- T. Kurozumi and A. Asakura

Previous record. M (Eldridge et al., 1977). (Eldridge et al., 1977). 459. Elysia halimedae Macnae Family Chromodorididae Previous record. M (Eldridge et al., 1977). 460. Thuridilla vatae Risbec 468. Casella sp. Previous record. M (Eldridge et al., 1977). Material examined. MAUG, E: 1 ex., st. B, Dive, TK leg., CBM-ZM-107553, 5 June. Order Aplysiomorpha Family Aplysiidae Family Halgerdidae 461. Aplysia (Pruvotaplysia) cf. A. (P.) par­ 469. Halgerda malesso Carlson & Hoff vula Gould in Morch Previous record. S (Carlson & Hoff, 1993). Material examined. PAGAN: ld ex., st. A, BD, Family Phyilidiidae TK leg., CBM-ZM-106570, 24 May. Previous record. As A. cf. parvula from M 470. Fryeria ruppelli Bregh (Eldridge et al., 1977). Furieri-ibo-umiushi 462. Dolabrifera dolabrifera (Rang) Previous record. M (Eldridge et al., 1977). Biwagata-namekuji 471. Fryeria guamensis Brunckhorst Material examined. URACAS: 4 exs., st. A, Material examined. ALAMAGAN: I ex., st. B, Dive, TK leg., CBM-ZM-107018, 6 June. Dive, TK leg., CBM-ZM-107054, 8 June. Previous record. M (Eldridge et al., 1977). 472. Phyllidiella pustulosa (Cuvier) Ko-ibo-umiushi Family Notarchidae Material examined. PAGAN: 2 exs., Dive (5 463. Styocheilus longicaudus (Quoy & Gai­ m), PS leg., CBM-ZM-107197 & 107200, 24 May. mard) Kurosuji-amefurashi Subclass Pulmonata Material examined. PAGAN: I ex., st. E, Dive, Order Systellommatophora TK leg., CBM-ZM-107285, 27 May. Family Onchidiidae Previous record. M (Eldridge et al., 1977). 473. Onchidiella sp. Material examined. GUGUAN: 5 exs., st. B, RI. Order Thecosomata AA leg., CBM-ZM-107579, 17 May. Family Cavoliniidae 464. Diacria quadridentata (Lesueur) Order Archaeopulmonata Kiyoko-kamegai Family Ellobiidae Material examined. AGRIHAN: Id ex., st. B, 474. "Melampus" castaneus (Mtihlfeld) BD, TK leg., CBM-ZM-107910, 29 May. Material examined. ANAT AHAN: 1 ex., st. A, RI, AA leg., CBM-ZM-107575, 11 May; I ex., st. Order Nudibranchia A, RI, TK leg., CBM-ZM-106856, 11 May; 9 exs., Family Polyceridae st. B, RI, TK leg., CBM-ZM-108022, 12 May. 465. Roboastra luteolineata (Baba) SARIGAN: I ex., st. A, RI, TK leg., CBM-ZM- Ishigaki-ryugu-umiushi 10693 l, 16 May. PAGAN: 2d exs., st. A, BD, TK Previous record. As Nembrotha luteolneata leg., CBM-ZM-106651, 24 May; 6 exs., st. B, RI, from M (Eldridge et al., 1977). AA leg., CBM-ZM-107171, 25 May; 5 exs., st. E, BD, TK leg., CBM-ZM-106146, 24 May; 3d exs., Family Gymnodorididae st. E, BD, AA leg., CBM-ZM-106255, 24 May. 466. Gymnodoris sp. AGRIHAN: Id ex., st. C, BD, TK leg., CBM-ZM- Previous record. M (Eldridge et al., 1977). 106008, 30 May; 16 exs., east coast, RI, TO & HH leg., CBM-ZM-107113, 30 May. ASUNCION: Family Vayssiereidae 2 exs., st. A, RI, AA leg., CBM-ZM-107134, 1 467. Vayssiera elegans (Baba) June. Okada-umiushi Previous record. AN, S, P & AS (Vermeij et al., Previous record. As Okadaia elegans from M 1983).

-160- Marine molluscs from the northern Mariana Islands

475. "Melampus" tlavus (Gmelin) Previous record. As S. sirius Pilsbry from AN, Tsuya-hamashiinomi G & P (Vermeij et al., 1983). Material examined. AN AT AHAN: 1 ex., st. B, Remarks. Vermeij et al. ( 1983) identified this RI, TK leg., CBM-ZM-108023, 12 May. PAGAN: species as S. sirius, which is distributed ld ex., st. A, BD, TK leg., CBM-ZM-106652, 24 throughout the temperate Japan mainland May. (Higo and Goto, 1992). Specimens from the Previous record. P (Vermeij et al., 1983). northern Marianas have weaker and more nu­ merous radial ribs than S. sirius, and were Order Basommatophora identified as S. (M.) subatrata, previously descr­ Family Trimusculidae ibed from the Ogasawara Islands. 476. Walliamia radiata (Pease) Material examined. AGRIHAN: ld ex., st. B, Class Bivalvia BD, TK leg., CBM-ZM-107912, 29 May. Subclass Pteriomorpha Previous record. P & AS (Vermeij et al., 1983). Order Arcoida Family Arcidae Family Siphonariidae 479. Arca avellana Lamarck 477. Siphonaria cf. S. guamensis (Quoy & Funegai Gaimard) Material examined. AN AT AHAN: 1 d ex., Material examined. GUGUAN: 23d exs., st. C, GUGUAN: st. C, BD, TK leg., CBM-ZM-107976, BD, TK leg., CBM-ZM-107914, 107980 & 18 May. ALAMAGAN: ld ex., st. A, TK leg., 107994, 18 May. PAGAN: ld ex., st. D, BD, TK CBM-ZM-106381, 18 May. PAGAN: 5d exs., st. leg., CBM-ZM-107383, 27 May; ld ex., st. E, BD, C, BD, AA, TF & HH leg., CBM-ZM-106500, 26 TK leg., CBM-ZM-106147, 24 May; 3d exs., st. E, May; ld ex., st. C, BD, TK leg., CBM-ZM-, 26 BD, AA leg., CBM-ZM-106254, 24 May. AGR­ May; 6 d exs., st. C, BD, TK leg., CBM-ZM- IHAN: 50 exs., st. A, RI, AA leg., CBM-ZM- 107654, 26 May; ld ex., st. D, BD, TK leg., 107386, 28 May; 9d exs., st. B, BD, TK leg., CBM-ZM-106547 & 106345, 27 May; 17d exs., CBM-ZM-107689, 107847 & 107912, 29 May. st. E, BD, TK leg., CBM-ZM-106148, 24 May; ASUNCION: 20 exs., st. A, RI, AA leg., CBM-ZM- 21d exs., st. E, BD, AA leg., CBM-ZM-106257, 24 107391, 1 June; 1 ex., st. B, RI, AA leg., CBM­ May; 3 exs., st. C, Dive, TK leg., CBM-ZM- ZM-107393, 7 June; 2 exs., st. B, RI, TK leg., 107286, 27 May. AGRIHAN: 4d exs., st. B, BD, CBM-ZM-107394, 7 June. URACAS: ld ex., st. TK leg., CBM-ZM-107848 & 107917, 29 May; 2d A, RI, AA leg., CBM-ZM-107408, 6 June. exs., st. C, BD, TK leg., CBM-ZM-106010, 30 Previous record. P (Vermeij et al., 1983). May. MAUG, E: 3d exs., st. A, BD, TK leg., 478. Siphonaria (Mestasiphon) subatra Pil­ CBM-ZM-106056, 2 June; 2 exs., st. C, Dive, TK sbry leg., CBM-ZM-107532, 4 June. MAUG, W: 2d Kuro-karamatsugai exs., st. E, RI, AA leg., CBM-ZM-107500, 4 June. Material examined. ANAT AHAN: 6 exs., st. Previous record. P & M (Vermeij et al., 1983). A, RI, AA leg., CBM-ZM-107351, 10 May; 3 exs., 480. Arca ventricosa Lamarck st. D, RI, TK leg., CBM-ZM-107363, 14 May. Oo-takanoha GUGUAN: 8 exs., st. B, RI, TK leg., CBM-ZM- Material examined. SARIGAN: 1 ex., st. A, RI, 107368, 17 May; 50 exs., st. B, RI, TK leg., TK leg., CBM-ZM-106932, 16 May. PAGAN: ld CBM-ZM-107369, 17 May; 1 ex., st. C, Dive, TK ex., st. A, BD, TK leg., CBM-ZM-106653, 24 May; leg., CBM-ZM-107374, 18 May; 14d exs., st. C, Id ex., st. C, BD, AA, TF & HH leg., CBM-ZM- BD, TK leg., CBM-ZM-107995, 18 May. AGR­ 106501, 26 May; 5d exs., st. C, BD, TK leg., IHAN: 30 exs., st. A, RI, AA leg., CBM-ZM- CBM-ZM-107655, 26 May; ld ex., st. E, BD, TK 107385, 28 May; ld ex., st. B, RI, AA leg., CBM­ leg., CBM-ZM-106149, 24 May; Id ex., st. E, BD, ZM-107388, 1 June; 34d exs., st. B, BD, TK leg., AA leg., CBM-ZM-106258, 24 May. MAUG, W: CBM-ZM-107846 & 107913, 29 May. ASUN­ ld ex., west coast, Dive (15-25 m), TP leg., CBM­ CION: 4d exs., st. A, AA leg., CBM-ZM-107585, 1 ZM-106800, 4 June. June. Previous record. AN, P, AS & M (Vermeij et

-161- T. Kurozumi and A. Asakura al., 1983). 485. Barbatia (Ustuaraca) stearnsi Pilsbry 481. Acar plicatum (Dillwyn) Hana-egai Koshirogai Material examined. PAGAN: 21d exs., st. E, Material examined. GUGUAN: 2d exs., st. C, BD, TK leg., CBM-ZM-106152, 24 May; 9d exs., BD, TK leg., CBM-ZM-107977, 18 May. PAGAN: st. E, BD, AA leg., CBM-ZM-106262, 24 May. ld ex., st. A, BD, TK leg., CBM-ZM-106654, 24 AGRIHAN: 4d ex., st. B, BD, TK leg., CBM-ZM- May; 2d exs., st. C, BD, AA, TF & HH leg., 107850 & 107918, 29 May. MAUG, E: 1 ex., st. CBM-ZM-106502, 26 May; 7d exs., st. C, BD, TK C, Dive, TK leg., CBM-ZM-107533, 4 June. leg., CBM-ZM-106550 & 107658, 26 May; 15d 486. Barbatia (Barbarca) tenella (Reeve) exs., st. E, BD, TK leg., CBM-ZM-106155, 24 Habutae-egai May; 20d exs., st. E, BD, AA leg., CBM-ZM- Material examined. PAGAN: Id ex., st. A, BD, 106264, 24 May; 1 ex., st. C, Dive, TK leg., TK leg., CBM-ZM-106672, 24 May; ld ex., st. E, CBM-ZM-107288, 27 May. AGRIHAN: 2d exs., BD, TK leg., CBM-ZM-106154, 24 May; 4d exs., North west coast, Dive, TP leg., CBM-ZM- st. E, BD, AA leg., CBM-ZM-106263, 24 May. 106817, 29 May. Previous record. P (Vermeij et al., 1983). Previous record. As A. divaricosa (Sowerby) from P & M (Vermeij et al., 1983). Family Glycymerididae 482. Barbatia (Abarbatia) lima (Sowerby) 487. Glycymeris sp. Egai Material examined. PAGAN: Id ex., st. D, BD, Material examined. PAGAN: ld ex., st. E, BD, TK leg., CBM-ZM-106729, 27 May. TK leg., CBM-ZM-106153, 24 May. Previous record. P (Vermeij et al., 1983). Previous record. As B. decussata (Sowerby) from P & M (Vermeij et al., 1983). Family Limopsidae 483. Barbatia (Ustularca) amygdalumtosum 488. Limopsis sp. (Roding) Previous record. G (Vermeij et al., 1983). Beni-egai Material examined. PAGAN: 3d exs., st. C, BD, Order Mytiloida TK leg., CBM-ZM-106548, 26 May; 14d exs., st. Family Mytilidae E, BD, TK leg., CBM-ZM-106150, 24 May; 18d 489. Modiolus auriculatus (Krauss) exs., st. E, BD, AA leg., CBM-ZM-106259, 24 Ryukyu-hibari May; 1 ex., st. C, Dive, TK leg., CBM-ZM- Material examined. PAGAN: Id ex., st. C, BD, 107287, 27 May; 9d exs., st. C, BD, TK leg., AA, TF & HH leg., CBM-ZM-106503, 26 May; CBM-ZM-107656, 26 May; ld ex., st. F, BD, TK 5d exs .. st. E, BD, TK leg., CBM-ZM-106156, 24 leg., CBM-ZM-106562, 24 May. AGRIHAN: ld May; 9 d exs., st. E, BD. AA leg., CBM-ZM- ex., st. B, BD, TK leg., CBM-ZM-107849, 30 May. 106261, 24 May. MAUG, E: ld ex., st. A, BD, TK leg., CBM-ZM- Previous record. P (Vermeij et al., 1983). 106786, 2 June. MAUG, N & W: 2d exs., Dive 490. Septifer excisus (Wiegmann) (5-IOm), TP leg., CBM-ZM-106791, 2 June. Shiro-inko MAUG, N: Id ex., north coast, Dive (6-15 m), TP Material examined. ANAT AHAN: ld ex., st. leg., CBM-ZM-106804, 4 June. B, TK leg., CBM-ZM-106879, 12 May. ALAMA­ Previous record. P (Vermeij et al., 1983). GAN: 1 d ex., st. A, BD, TK leg., CBM-ZM- 484. Barbatia (Ustuaraca) lacerata (Brugu­ 106382, 18 May. PAGAN: 2d exs., st. A, BD, TK iere) leg., CBM-ZM-106655, 24 May; 6d exs., st. C, BD, Oo-mino-egai AA, TF & HH leg., CBM-ZM-106504, 26 May; Material examined. PAGAN: Id ex., st. C, BD, 3d exs., st. C, BD, TK leg., CBM-ZM-106551, TK leg., CBM-ZM-106549, 26 May; 3d exs., st. C, 107215 & 107661, 26 May; 2d exs., st. D, BD, BD, TK leg., CBM-ZM-107657, 26 May; 2d exs., TK leg., CBM-ZM-106346, 27 May; 7d exs., st. E, st. E, BD, TK leg., CBM-ZM-106151, 24 May; 3d BD, TK leg., CBM-ZM-106157, 24 May; 14d exs., exs., st. E, BD, AA leg., CBM-ZM-106260, 24 st. E, BD, AA leg., CBM-ZM-106265, 24 May; Id May. ex., st. F, BD, TK leg., CBM-ZM-106563, 24 May.

-162- Marine molluscs from the northern Mariana Islands

AGRIHAN: 3d exs., st. C, BD, TK leg., CBM-ZM- 106011, 30 May. MAUG, W: 1 ex., st. E, RI, AA Family Malleidae leg., CBM-ZM-107501, 4 June. 500. Malvifundus irregularis Jousseaume Previous record. G & P (Vermeij et al., 1983). Hiryogai 491. Septifer sp. Material examined. PAGAN: ld ex., st. E, BD, Material examined. PAGAN: 2d exs., st. E, BD, TK leg., CBM-ZM-106159, 24 May. TK leg., CBM-ZM-106158, 24 May; Id ex., st. E, BD, AA leg., CBM-ZM-106266, 24 May. Family Pectinidae 501. Chlamys (Bractaechlamys) coruscans Order Pterioida coruscans (Hinds) Family Pteriidae Yagasuri-hiyoku 492. Pinctada margaritifera (L.) Material examined. GUGUAN: ld ex., st. C, Kurochogai BD, TK leg., CBM-ZM-108315, 18 May. PAGAN: Previous record. G & P (Vermeij et al., 1983). 3d exs., st. A, BD, TK leg., CBM-ZM-106571, 24 493. Pinctada maculata (Gould) May; ld ex., st. A, BD, TK leg., CBM-ZM-106673, Midori-aori 24 May; 7d exs., st. E, BD, AA leg., CBM-ZM- Material examined. PAGAN: 3d exs., st. E, BD, 106267 & 106268, 24 May. TK leg., CBM-ZM-106160, 24 May. URACAS: 1 Previous record. P (Vermeij et al., 1983 ). ex., st. A, RI, AA leg., CBM-ZM-107004; 6 June. 502. Chlamys (s.s.) squamosa (Gmelin) 494. Pinctada sp. Ryukyu-nadeshiko Previous record. P (Vermeij et al., 1983). Previous record. G & P (Vermeij et al., 1983). 503. Chlamys (s.s.) sp. A Family Isognomonidae Material examined. PAGAN: ld ex., st. A, BD, 495. Isognomon (s.s.) perna (L.) TK leg., CBM-ZM-106572, 24 May. Aorigai 504. Chlamys (s.s.) sp. B Previous record. P (Vermeij et al., 1983). Material examined. PAGAN: ld ex., st. C, BD, 496. Jsognomon (s.s.) marspiale (Roding) TK leg., CBM-ZM-108307, 26 May. Kaishi-aori 505. Semipallium tigris (Lamarck) Material examined. PAGAN: 4d exs., st. C, BD, Nishiki-ogi AA, TF & HH leg., CBM-ZM-106505, 26 May; 2 Material examined. PAGAN: Id ex., Dive, TP exs., st. C, Dive, TK leg., CBM-ZM-107289, 27 leg., CBM-ZM-106761, 26 May. MAUG, N & W: May. ld ex., Dive (5-lOm), TP leg., CBM-ZM-106792, 497. Jsognomon (s.s.) incisum (Conrad) 2 June. Material examined. GUGUAN: ld ex., st. B, RI, 506. Excellichalamys spectabilis (Reeve) TK leg., CBM-ZM-106974, 17 May. Chihirogai Previous record. P (Vermeij et al., 1983). Material examined. PAGAN: Id ex., st. C. BD, 498. Isognomon (s.s.) cf. I. legumen (Gmelin) TK leg., CBM-ZM-108306, 26 May. Material examined. PAGAN: 3d exs., st. D, BD, TK leg., CBM-ZM-106730, 27 May. Family Spondylidae 499. Jsognomon (Parviperna) nucleus (La­ 507. Spondylus butleri Reeve marck) Kabatoge-umigiku Heritori-aori Material examined. PAGAN: ld ex., st. D, BD, Material examined. AN AT AHAN: I ex., st. D, TK leg., CBM-ZM-106348, 27 May. ASUNCION: RI, TK leg., CBM-ZM-106914, 14 May. AGR­ ld ex., north-west coast, Dive (15 m), TP leg, IHAN: 2 exs., st. A, RI, AA leg., CBM-ZM- CBM-ZM-106828, 7 June. MAUG, E: ld ex., st. 107082, 28 May. ASUNCION: 3 exs., st. A, RI, A, BD, TK leg., CBM-ZM- 106787, 2 June. AA leg., CBM-ZM-107135, 1 June. MAUG, N: 1 MAUG, W: ld ex., west coast. Dive (15-25m), ex., st. F, RI, AA leg., CBM-ZM-107 483, 3 June. TP leg., CBM-ZM-106801, 4 June. 508. Spondylus nicobaricus Schreibers Mihikari-mengai

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Material examined. PAGAN: 7d exs., st. C, BD, 29 exs., st. C, BD, TK leg., CBM-ZM-106554 & TK leg., CBM-ZM-106552 & 107665, 26 May; 4d 107660, 26 May; 1 ex., st. C, Dive, TK leg., exs., st. E, BD, TK leg., CBM-ZM-106161, 24 CBM-ZM-107293, 27 May; 39d exs., st. E, BD, May; 2 d exs., st. E, BD, AA leg., CBM-ZM- TK leg., CBM-ZM-106166, 24 May; 20d exs., st. 106270, 24 May. E, BD, AA leg., CBM-ZM-106272, 24 May. 509. Spondylus spp. Previous record. As Lima annulata from P Material examined. PAGAN: 1 ex., st. C, Dive, (Vermeij et al., 1983). TK leg., CBM-ZM-107290, 27 May; 7d exs., st. E, 514. Ctenoides ales (Finley) BD, TK leg., CBM-ZM-106162, 24 May; ld ex., Ukon-hanegai st. E, BD, AA leg., CBM-ZM-106269, 24 May. Material examined. ASUNCION, N: ld ex., AGRIHAN: 2d exs., st. C, BD,TK leg., CBM-ZM- Dive, TP leg., CBM-ZM-107123, 1 June. MAUG, 106012 & 106013, 30 May. N: ld ex., north coast, Dive (4-5 m), TP leg., Previous record. G & M (Vermeij et al., 1983). CBM-ZM-106797, 3 June. 515. Limatula cf. L. bullata (Born) Family Plicatulidae Material examined. GUGUAN: ld ex., st. C, 510. Plicatula australis Lamarck BD, TK leg., CBM-ZM-107978, 18 May. Kasuri-ishigaki-modoki Material examined. ALAMAGAN: ld ex., st. Family Pycnodonteidae A, TK leg., CBM-ZM-106383, 18 May. PAGAN: 516. Pycnodonte numisma (Lamarck) ld ex., st. C, BD, AA, TF & HH leg., CBM-ZM- Previous record. M (Vermeij et al., 1983). 106507, 26 May; ld ex., st. D, BD, TK leg., 517. Hyotissa chemnitzi (Hanley) CBM-ZM-106731, 24 May; 5d exs., st. E, BD, TK Benigaki leg., CBM-ZM-106163, 24 May; 1 ex., st. C, Dive, Material examined. PAGAN: 8d exs., st. C, BD, TK leg., CBM-ZM-107291, 27 May. MAUG, E: TK leg., CBM-ZM-107663, 26 May. AGRIHAN: 2d exs., st. A, BD, TK leg., CBM-ZM-106057, 2 1d ex., st. B, BD, TK leg., CBM-ZM-107851, 29 June; 1 d ex., st. C, Dive, TK leg., CBM-ZM- May. 107534, 4 June. 518. Hyotissa inaequivalvis (Sowerby) 511. Plicatula sp. Hiragaki Material examined. PAGAN: 1 ex., st. C, Dive, Material examined. URACAS: 2 exs., st. A, TK leg., CBM-ZM-107292, 27 May; ld ex., st. E, Dive, TK leg., CBM-ZM-107019, 6 June. BD, TK leg., CBM-ZM-106164, 24 May; ld ex., st. E, BD, AA leg., CBM-ZM-106271, 24 May. Subclass Heterodonta URACAS: 2 exs., st. A, Dive, TK leg., CBM-ZM- Order Veneroida 107020, 6 June. Family Lucinidae 519. Epicodakia bella (Conrad) Family Limidae Hime-tsukigai 512. Lima vulgaris Link Material examined. PAGAN: 3d exs., st. A, Minogai BD, TK leg., CBM-ZM-106665, 24 May; 10d exs., Material examined. PAGAN: 2d exs., st. A, st. E, BD, TK leg., CBM-ZM-106173, 24 May; 3d BD, TK leg., CBM-ZM-106656, 24 May; ld ex., exs., st. E, BD, AA leg., CBM-ZM-106275, 24 st. C, BD, TK leg., CBM-ZM-107659, 26 May; ld May. MAUG, E: ld ex., st. C, Dive, TK leg., ex., st. D, BD, TK leg., CBM-ZM-106352, 27 May; CBM-ZM-107535, 4 June. MAUG, W: ld ex., st. Id ex., st. E, BD, TK leg., CBM-ZM-106165, 24 E, RI, AA leg., CBM-ZM-107503, 4 June. May. Previous record. As Ctena bella G & M (Ver­ Previous record. As L. Zima (L.) from P (Ver­ meij et al., 1983). meij et al., 1983). 520. Epicodakia sp. 513. Ctenoides annulata (Lamarck) Hososuji-hime-tsukigai Midare-hanegai Material examined. PAGAN: 2d exs., st. A, Material examined. PAGAN: 5d exs., st. C, BD, BD, TK leg., CBM-ZM-106662, 24 May; ld ex., AA, TF & HH leg., CBM-ZM-106508, 26 May; st. E, BD, TK leg., CBM-ZM-106172, 24 May. 4d

-164- Marine molluscs from the northern Mariana Islands exs., st. E, BD, AA leg., CBM-ZM-106276, 24 exs., st. A, BD, TK leg., CBM-ZM-106058, 2 June. May. MAUG, W: ld ex., west coast, Dive (15-25m), TP leg., CBM-ZM-106802, 4 June. Family Carditidae 527. Chama dunkeri Lischke 521. Cardita variegata (Bruguiere) Keitogai Kurofu-tomayagai Material examined. Id ex., PAGAN: st. D, Material examined. MAUG, E: ld ex., st. A, Dive, TK leg., CBM-ZM-107264, 27 May. ld ex., BD, TK leg., CBM-ZM-106061, 2 June. MAUG, MAUG, E: st. A, BD, TK leg., CBM-ZM-106059, 2 W: 3d exs., st. E, RI, AA leg., CBM-ZM-107502, 4 June. June. 528. Chama iostoma Conrad Previous record. M (Vermeij et al., 1983). Kanetsuke-zaru 522. Carditella cf. C. hawaiensis Dall, Bar­ Previous record. G, P & M (Vermeij et al., tsch & Rehder 1983). Previous record. AS (Vermeij et al., 1983). 529. Chama sp. A Material examined. PAGAN: 12d exs., st. E, Family Fimbriidae BD, TK leg., CBM-ZM-106170, 24 May; ld exs., 523. Fimbria fimbriata (L.) st. E, BD, AA leg., CBM-ZM-106274, 24 May. Chijimi-kagogai 530. Chama sp. B Previous record. M (Vermeij et al., 1983). Material examined. PAGAN: ld ex., st. E, BD, 524. Fimbria sp. TK leg., CBM-ZM-106168, 24 May. Previous record. P (Vermeij et al., 1983). 531. Chama sp. Previous record. G & AG (Vermeij et al., 1983). Family Chamidae 525. Chama japonica Lamarck Family Kelliidae Kikuzarugai 532. Kellia cf. K. porculus Pilsbry Material examined. ALAMAGAN: ld ex., st. Material examined. AGRIHAN: ld ex., st. B, A, TK leg., CBM-ZM-106384, 18 May. ld ex., BD, TK leg., CBM-ZM-107919, 29 May. north west coast, Dive (10-15m), TP leg., CBM­ 533. Nesobornia bartschi Chavan ZM-106807, 9 June. PAGAN: 4d exs., st. A, BD, Material examined. PAGAN: 2d exs., st. A, TK leg., CBM-ZM-106661, 24 May; 3d exs., st. C, BD, TK leg., CBM-ZM-1066812, 24 May. BD, AA, TF & HH leg., CBM-ZM-106510, 26 Previous record. P (Vermeij et al., 1983). May; I ex., st. C, Dive, TK leg., CBM-ZM- 107295, 27 May; 1d ex., st. C, BD, TK leg., Family Galeommatidae CBM-ZM-107667, 26 May; ld ex., st. D, BD, TK 534. Pseudogaleomma sp. leg., CBM-ZM-106350, 27 May; 14d exs., st. E, Material examined. GUGUAN: ld ex., st. C, BD, TK leg., CBM-ZM-106171, 24 May; 6d exs., BD, TK leg., CBM-ZM-107979, 18 May. st. E, BD, AA leg., CBM-ZM-106273, 24 May; ld 535. Scintilla sp. ex., st. F, BD, TK leg., CBM-ZM-106564, 24 May. Material examined. PAGAN: ld ex., st. E, BD, AGRIHAN: 2d exs., st. C, BD, TK leg., CBM-ZM- AA leg., CBM-ZM-106282, 24 May. 106014, 30 May. MAUG, E: 3d exs., st. A, BD, TK leg., CBM-ZM-106060, 2 June. Family Cardiidae 526. Chama divaricata Reeve 536. Vasticardium angulatum (Lamarck) Shima-zarugai Fujiiro-zaru Material examined. PAGAN: 5d exs., st. A, Material examined. MAUG, N & W: ld ex., BD, TK leg., CBM-ZM-106660, 24 May; ld ex., Dive (5-10 m), TP leg., CBM-ZM-106793, 2 June. st. C, BD, AA, TF & HH leg., CBM-ZM-106509, 26 May; 40d exs., st. C, BD, TK leg., CBM-ZM- Family Tridacnidae 106353 & 107666, 26 May; 5d exs., st. E, BD, TK 537. Tridacna maxima Roding leg., CBM-ZM-106169, 24 May; ld ex., Dive, PS Shiranami leg., CBM-ZM-106742, 24 May. MAUG, E: 4d Material examined. ANA T AHAN: 2d exs., st.

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A, BD, TK leg., CBM-ZM-106445, 11 May. ALA­ Material examined. ALAMAGAN: ld ex., st. MAGAN: 1 d ex .. st. A, TK leg., CBM-ZM- A, AA leg., CBM-ZM-107114, 9 June. PAGAN: 106385, 18 May. PAGAN: ld ex., st. C, BD, AA, ld ex., st. A, BD, TK leg., CBM-ZM-106573, 24 TF & HH leg., CBM-ZM-106512, 26 May; 8d May; ld ex., st. C, BD, TK leg., CBM-ZM-106547, exs., st. C. BD. TK leg., CBM-ZM-106555 & 26 May; ld ex., st. E, BD. TK leg., CBM-ZM- 107670, 26 May; 5d exs., st. D, BD, TK leg., 106177, 24 May; ld ex., st. E, BD, AA leg., CBM-ZM-106354, 27 May; 1Od exs., st. E. BD, CBM-ZM-106280, 24 May. TK leg., CBM-ZM-106167, 24 May; 6d exs., st. E, 547. Elliptotellina euglypta (Gould) BD, AA leg., CBM-ZM-106277, 24 May. MAUG, Chijimi-himezara W: ld ex., st. E, RI, AA leg., CBM-ZM-107504, 4 Material examined. GUGUAN: ld ex., st. C, June. BD, TK leg., CBM-ZM-108316, 18 May. Previous record. S, P & M (Vermeij et al., 1983). Family Semelidae 538. Tridacna squamosa Lamarck 548. Semele obscura Deshayes Hire-jako Shiwa-same-zaragai-modoki MAUG: field observation. Material examined. PAGAN: 2d exs., st. A, Previous record. AN & M (Vermeij et al., BD, TK leg., CBM-ZM-106663, 24 May; 3d exs., 1983). st. E, BD, TK leg., CBM-ZM-106178, 24 May; 2d exs., st. E, BD, AA leg., CBM-ZM-106279, 24 Family Mactridae May. 539. Mactra sp. Material examined. PAGAN: ld ex., st. C, BD, Family Trapeziidae TK leg., CBM-ZM-108308, 26 May. 549. Trapezium oblongum (L.) Suehiro-funagatagai Family Mesodesmatidae Material examined. PAGAN: ld ex., st. E, BD, 540. Rochefortina sandwichensis (Smith) AA leg., CBM-ZM-106278, 24 May. Hakobeno-hanagai Previous record. P & M (Vermeij et al .. 1983). Previous record. As Ervilia sandwichensis from G & M (Vermeij et al., 1983). Family Veneridae 550. Periglypta reticulata (L.) Family Tellinidae Ara-nunome 541. Tellina (Tellinella) crucigera Lamarck Material examined. ALAMAGAN: 3d exs., st. Hinodegai A, RI. AA leg., CBM-ZM-107075, 9 June. Previous record. P (Vermeij et al., 1983). PAGAN: ld ex., st. A, BD, TK leg., CBM-ZM- 542. "Tellina" sp. 106664, 24 May; 2d exs., st. C, BD, TK leg., Previous record. M (Vermeij et al., 1983). CBM-ZM-106732 & 107671, 26 May; 5d exs., st. 543. Quidnipagus palatam Iredale E, BD, TK leg., CBM-ZM-106175, 24 May; 8d Ryukyu-shiratori exs., st. E, BD, AA leg., CBM-ZM-106281, 24 Previous record. P (Vermeij et al., 1983). May; 2 d exs., st. F, BD, TK leg., CBM-ZM- 544. Scutarcopagia scobinata (L.) 106565, 24 May; MAUG, N & W: 2d exs., Dive Same-zara (5-10 m), TP leg., CBM-ZM-106794, 2 June. Material examined. ALAMAGAN: ld ex., st. Previous record. P (Vermeij et al., 1983). A, RI, AA leg., CBM-ZM-107074, 9 June. 551. Gafrarium pectinatum (L.) PAGAN: 2d exs., st. C, BD, TK leg., CBM-ZM- Hososuji-inami 106556 & 107672, 26 May. Previous record. P (Vermeij et al .. 1983). 545. Pinguitellina robusta (Hanley) 552. Pitar? sp. Uraki-hime-zara Material examined. PAGAN: 5d exs., st. E, BD, Previous record. P (Vermeij et al., 1983). TK leg., CBM-ZM-106174, 24 May; 4d exs., st. E, 546. Jactellina obliquistriata (Sowerby) BD, AA leg., CBM-ZM-106283 & 106284, 24 Goshiki-zakuragai May.

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553. Liochoncha hieroglyphica (Conrad) N. (Thelyostyla) albicilla has been reported Sarasagai from Pagan (Vermeij et al., 1983), only one Previous record. M (Vermeij et al., 1983). specimens collected from Anatahan. Littorina 554. Venus (Ventricolaria) toreuma Gould undulata and Nodilittorina (Granulilittorina) sp. Maru-sudaregai B was obtained from several islands, but only Material examined. PAGAN: ld ex., st. C, BD, one or two specimens of these species were TK leg., CBM-ZM-106557, 26 May; 2d exs., st. E, collected at each site. The scarcity of these five BD, TK leg., CBM-ZM-106176, 24 May. species might suggest that their populations in the northern Mariana Islands are pseudopopul­ Class Cephalopoda ations (see Oyama, 1955; Nishimura, 1981, for Order Octopoda definiton). 555. Octopoda spp. As Vermeij et al. (1983) showed that Nodilit­ Material examined. AGRIHAN: 1 ex., st. C, torina (s. s.) pyramidalis is distributed from Dive, TK field observation, 30 May. MAUG, E: 1 Pagan to the further northern islands, and the ex., st. B, Dive, SM field observation, 5 June. present expedition has confirmed this distribu­ tion pattern. This species was dominant on Discussion rocky intertidal zones in the Ogasawara Is­ More than 520 species, including 4 chitons, lands (Asakura et al., 1990, 1991) and was also 456 gastropods and 68 bivalves of marine mol­ recorded from intertidal zones on the Kazan luscs have been recorded from the northern (Volcano) Islands (Nishimura, 1987a, b, 1988). Marianas by this expedition and in the previ­ Therefore, dispersal might have occurred from ously published literatures. At least 190 spe­ the Ogasawara and/or Kazan Islands. This dis­ cies were new records from these islands. persal pattern can also be recognized within Almost all the species are widely distributed Nipponacmea boninensis and Siphonaria (Mesta­ in the Inda-western Pacific (Kuroda, 1960; siphon) subatra. Abbott, 1960; Burgess, 1985; Haubrick, 1992). The land hermit crab Coenobita purpureus Some species of Vetigastropoda, such as Sanha­ was collected only from Maug (Asakura et al., liotis spp. and Stomatella sp., exhibit different 1994). This species is probably endemic in shell characters compared with those in the Japan (Nakasone, 1987) and occurred ab­ other Pacific areas. These forms may in fact be undantly in the Ogasawaras (Tokyo Metropol­ distinct species. Fukuda (1993) reported that itan Broad of Education, 1987). This land Sanhaliotis sp. B from the Ogasawara Islands hermit crab may also have dispersed from the was an undescribed species. On the other hand, Ogasawaras to the northern end of the north­ Nipponacmea boninensis is endemic to the ern Marianas. southern Izu, Ogasawara and northern Mari­ Some pseudopopulations of the above ana Islands (Asakura and K urozumi, 1991; mentioned species may have been dispersed Sasaki and Okutani, 1993). Siphonaria (Mestasi­ from the Ogasawara Islands, as they have been phon) subatra was common on the Ogasawara recorded from Ogasawaras (Fukuda, 1993). On and the northern Mariana Islands. These obser­ the other hand, N. (R.) maxima has not been vations suggest that the Ogasawara and north­ collected from the Ogasawara or Kazan Islands ern Mariana Islands might be located in the (Nishimura, 1987a, b, 1988; Fukuda, 1993), but same biogeographical region. it was collected in Apra Harbr, Guam (CBM­ Among the intertidal littorinids and neritids, ZM-101779). Dispersal of this species probably some species previously reported from the occurs from the southern Marianas. northern Marianas were rarely or never found Detailed distribution patterns of each spe­ during this expedition. Nerita (Ritena) maxima cies, further taxonomic studies of some vetig­ and N. (R.) insculpta have been reported from astropods, and comparisons of species composi­ Pagan (Vermeij et al., 1983). The former species tion are needed. could not be found, and only two specimens of the latter were collected at different sites. Also

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ropoda and Neotagenioglossa. Ogasawara Res. ( 19): Aknowledgments 1-86. I wish to express my sincere thanks to Drs. H. Higo, S. and T. Goto. 1993. A Systematic List of Saito and K. Hasegawa and Messrs. H. Ishi­ Molluscan Shells from the Japanese ls. and the kawa, H. Fukuda, T. Sasaki and N. Hori for Adjacent Area. 693 pp. Eru Malacological Publica­ their useful suggestions concerning identific­ tions, Yao, Osaka. ation of some species and to Miss Y. Urata for Hoff, P. J. and C.H. Carlson. 1990. A new Runcinacea assisting this study. from the Mariana Islands (Gastropoda: Opisthobr­ anchia). Venus (Jap. Jour. Malac.) 49(2): 263-269. References Houbrick, R. S. 1992. Monograph of genus Cerithium Abbott, R. T. 1960. The genus Strombus in the lndo­ Bruguiere in the Indo-Pacific (Cerithiidae: Proso­ Pacific. Indo-Pacific Mollusca 1(2): 33-146. branchia). Smithsonian Contr. Zoo!. (510): 1-211. Asakura, A., Y. Kondo and S. Nishihama. 1991. Distri­ Kuroda, T. 1960. A Catalogue of Molluscan Fauna of bution patterns of animals on the rocky shores of the Okinawa Islands. 104 pp. University of the Chichijima in the Ogasawara Islands. Nat. Hist. Ryukyus, Naha. Res. 1(2): 23-40. Nakasone. Y. 1987. Taxonomy of genus Coenobita in Asakura, A., Y. Kondo, W. Sato-Okoshi and M. the Okinawa Prefecture. In Toyama, M. (ed.), Aman, Miyata. 1990. Distribution patterns of animals and Survey Reports on Natural Monuments of Oki­ plants on the rocky shores of Hahajima in the nawa Prefecture, pp. 3-15. Okinawa Prefectural Ogasawara Islands. Nat. Hist. Res. 1(1): 65-79. Board of Education, Naha. Asakura, A. and T. Kurozumi. 1991. Notes on three Nishimura, K. 1987a. Shells of Ogasawara (Bonin) marine molluscs from the northern Mariana Is­ Islands-I. Kita-iwo-jima. Chiribotan 18(2): 29-34. lands, Micronesia. J. Nat. Hist. Mus. Inst. Chiba 1(2): Nishimura, K. 1987b. Shells of Ogasawara (Bonin) 15-19. Islands-II. Iwo-jima. Chiribotan 18(3.4): 93-98. Asakura, A., T. Kurozumi and T. Komai. 1994. Ano­ Nishimura, K. 1988. Shells of Ogasawara (Bonin) Is­ mura (Crustacea: Decapoda) collected from the nor­ lands-Ill. Minami-iwo-jima. Chiribotan 19(3): 49- thern Mariana Islands, Micronesia. In Asakura, A. 52. and T. Furuki (eds.), Biological Expedition to the Nishimura, S. 1981. Sea and Life: Introduction to Northern Mariana Islands, Micronesia. Nat. Hist. Marine Biogeography (Chikyu no umi to seimei: Res., Special Issue (1): 275-283. Kaiyo-seibutu-chirigaku-josetu). 284 pp. Kaimei­ Asakura, A., T. Ohba, S. Miyano, T. Furuki, T. Kuro­ sha, Tokyo. zumi and H. Harada. 1994. Outline of the biological Oyama, K. 1955. Notes on an occasional appearance expedition to the northern Mariana Islands, Micro­ of Mollusca. Bull. Biogeogr. Soc. Japan 16-19: 80- nesia. In Asakura, A. and T. Furuki (eds.), Biologi­ 83. cal Expedition to the Northern Mariana Islands, Sasaki, T. and T. Okutani. 1993. New genus Nippon­ Micronesia. Nat. Hist. Res., Special Issue (1): 1-11. acmea (Gastropoda, Lotiidae): A revision of Japa­ Burgess, C. M. 1985. Cowries of the World. 289 pp. nese limpets hitherto allocated in Notoacmea. Gordon Verhoef Seacomber Publications. Venus (Jap. Jour. Malac.) 52(1): 1-40. Carlson, C.H. and P. J. Hoff. 1993. Three new Halge­ Rosewater, J. 1970. The family Littorinidae in the rda species (Doridoidea: Nudibranchia: Opisthobr­ Indo-Pacific. part 1. The subfamily Littorininae. anchia) from Guam. Veliger 36( 1): 16-26. Indo-Pacific Mollusca 2(11 ): 417-506. Cernohorsky, W. 0. 1976. The Mitridae of the world. Tokyo Metropolitan Broad of Education. 1987. part 1. The subfamily Mitrinae. Indo-Pacific Mollu­ Survey Reports on genus Coenobita in the Ogasa­ sca 3(17): 273-528. wara Islands. 98 pp. Tokyo Metropolitan Broad of Eldredge, L. G., R. T. Tsuda, P. Moore, M. Chernn and Education, Tokyo. S. Neudecker, 1977. A natural history of Maug, Vermeij, G. J., E. A. Kay and L. G. Eldredge. 1983. northern Mariana Islands. Univ. Guam Mar. Lab. Molluscs of the northern Mariana Islands, with Tech. Rep. (43): 1-87. special reference to the selectivity of oceanic dis­ Fukuda, H., 1993. Marine Gastropoda (Mollusca) of persal barriers. Micronesica 19(1-2): 27-55. the Ogasawara (Bonin) Islands.Part 1: Archaeogast-

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