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Notes on Cancellariidae (Mollusca: Gastropoda) - Iii

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Notes on Cancellariidae (Mollusca: Gastropoda) - Iii NOTES ON CANCELLARIIDAE (MOLLUSCA: GASTROPODA) - III RICHARD E. PETIT* NORTH MYRTLE BEACH, SOUTH CAROLINA ABSTRACT Geology Department, British Museum This paper is the third in a series devoted (Natural History), London, for assistance in to the gastropod family Cancellariidae. In using their libraries and collections during this paper seven new species are described visits to their respective institutions. and illustrated. Of the new taxa, two are For contributing specimens for study, the from the Tertiary of Panam~ , one from the writer is indebted to Carl C. Withrow, St. Tertiary of Virginia. One Recent species is Petersburg, Florida; T. Walley Williams, from the Galapagos Islands, one is from West Morgantown, West Virginia; and Mrs. Africa, and two are from the tropical Jacqueline DeRoy, Isla Santa Cruz, Gala­ western Atlantic. pagos Islands, Ecuador. Agatrix epomis (Woodring, 19 28 ), origi­ The continued assistance of Druid Wilson, nally described from the Bowden Formation U.S. Geological Survey, Washington, D.C., is of Jamaica, is reported from the Recent gratefully acknowledged. fauna of Venezuela. A possible deep-water form of the SYSTEMATICS shallow water species Cancellaria reticulata The family Cancellariidae traditionally (Linne, 17 67) is illustrated and discussed. has been placed in the Superfamily The taxon Voluta cancellata Linne, 1767, is Volutacea, usually near the Mitridae and also discussed. In addition, Cancellaria dalli Volutidae. In a recent paper, Olsson (1970) Bartsch, 1915, is shown to be a synonym of has shown that the Cancellariidae possess an Trigonostoma bullatum (Sowerby, 1832), entirely different type of radula than any and there is a short discussion of the genus previously known, and he has proposed the Admetula and its distinction from Agatrix. new order Nematoglossa. Ponder (1973, p. 3 23) states that division on the ordinal level ACKNOWLEDGEMENTS is not necessary, but introduced the super­ The writer is indebted to Axel A. Olsson, familial taxon Cancellariacea, which has Coral Gables, Florida, for making known the been subsequently adopted by Keen and existence of the Western Atlantic Recent Coan (1974, p. 138). Suprageneric classifica­ species treated herein, and to Gilbert L. Voss tion is beyond the scope of this paper, and and Frederick M. Bayer of the Division of mention is made of this subject only to call Biology and Living Resources of the Rosen­ attention to Olsson's important work. tiel School of Marine and Atmospheric Sciences, University of Miami, for permitting Genus CANCELLARIA Lamarck, 1799 study of these specimens. Cancellaria LAMARCK, 1799, Mem. Soc. Hist. Nat. Paris, v. 1, p. 71. Loan of collections of the Geology Type, by monotypy, Voluta reticulata Linne, Department of Tulane University has greatly 1767. Recent, North Carolina to Brasil. facilitated the study of this family, and the advice and assistance of Emily H. Vokes has CANCELLARIA cf. RETICULATA been invaluable. (Linne, 1767) Expressions of appreciation are also due to Joseph Rosewater and Harald A. Rehder Plate 1, fig. 1 of the National Museum of Natural History, , Washington, D.C., and to C. P. Nuttall of the Voluta reticulata LINNE, 1767, Systema Naturae, Ed. 12, p. 1190, no. 408. *R esearch Associate, Paleontological Research Two specimens of a large Cancellaria were Institution, Ithaca, New York. taken by the R/V Gerda at depths of 40-4 7 33 34 Tulane Studies in Geology and Paleontology Vol. 12 and 9 5 meters off of the Florida Keys. These might show that they represent a different shells are much more attenuate than shal­ species. Definitive identification of these low-water specimens of C. reticulata, and two specimens must await availability of have much finer sculpture. In shape they additional material. approach the Tertiary C. conradiana Dall. Figured specimen: Rosentiel School of Cancellaria conradiana was described by Marine and Atmospheric Science no. Dall (1890, p. 42) without locality, but it is 30-7 525; height 42.5 mm, diameter 22.1 evident that he was describing a fossil and mm; locality Gerda Station G-7 56, Florida Schuchert ( 1905, p. 124) subsequently Keys, Florida. noted that the holotype was from the Caloosahatchee River at Fort Thompson. Subgenus BIVETIELLA Wenz, 1943 Later (Dall, 1892, p. 211), the name appears Bive tiella WENZ, Handbuch PaUiozoologie , v. 6, in a species list of the Waccamaw fauna, Gastropoda, p. 1356. where it is stated as being known only from Type, by original designation, Cancellaria similis Sowerby , 1833. Recent, West Africa. the Pliocene. The first appearance of the name C. con­ CANCELLARIA (BIVETIELLA) radiana was as a nude name (Dall, 1889, p. CANCELLAT A (Linne, 1767) 104) where it is listed in the Recent fauna of , west Florida and in the Pliocene. Cancellaria Murex scabriculus LINNE, 1758, Systema Naturae, conradiana Dall was listed by Johnson ed. 10, p. 751, no. 47). ( 19 34, p. 144) as a Recent species. As men­ Voluta cancellata LINNE, 1767, Systema Naturae, tioned by Gardner (1948, p. 264) there are ed. 12, p. 1191, no. 413. no Recent specimens of C. conradiana in the This well known species was first de­ U. S. National Museum. Recent searches for scribed by Linne in 1767. In the 12th such specimens by Mr. Druid Wilson, U. S. Edition of the Systema Naturae he changed Geological Survey (personal communica­ the placement of the species from Murex to tion), and by the writer, confirm Dr. Gard­ Volu ta. As he was also moving his Buccinum ner's statement. No Recent specimens of C. scabriculum of the lOth Edition to Volu ta in conradiana are known to the writer, al­ the 12th Edition, he changed the name of though it is a common fossil in the late Murex scabriculus to Voluta cancellata to Tertiary of the Carolinas and Florida. The avoid homonymy. Recent specimen figured as Cancellaria con­ Under. the rules of nomenclature in effect radiana by Perry (1940, pl. 39, fig. 276) and during recent years, the taxon scabriculus by Perry and Schwengel (1 955, pl. 39, fig. would be available in Cancellaria. A search 27 6) appears to be a rather high spired, of the literature reveals only two uses of the albinistic C. reticulata, wit h typical rough name, one of which is in a list (H. & A. surface. Adams, 1854, p. 276 ), which also includes The two Recent specimens under dis­ Cancellaria cancellata. The only clear use of cussion have a slightly smoother surface than scabriculus as the proper name for this the rough C. reticulata, but are more strong­ species is by Pallary (1900, p. 259), who ly sculptured than C. conradiana. Although cites the name as scabriusculus instead of the height/width ratio of these two speci­ scabricula. This spelling error originated with mens is comparable to that cited by Dall for Linne (1767, p. 1191) who referred back to C. conradiana, they are less attenuate than "Murex scabriusculus" in his discussion of examples of C. conradiana of equal height in Voluta cancellata. the writer's collection from the Waccamaw A history of the species is given at length Formation of South Carolina. The Recent by Dodge (1955, pp. 99-101), but he does subspecies C. reticulata adelae Pilsbry, 1940, not mention the availability of scabricula to while smooth, has the form of typical C. replace cancellata. Fortunately, the specific reticulata. name cancellata can be retained under the These two specimens may represent a new I.C.Z.N. rule (Article 59i), which states deep-water form of C. reticulata, although if that a junior secondary homonym rejected enough specimens were available for study it before 1961 is permanently rejected. Publi- No.1 Cancellariidae - III 35 cation of this rule in 197 3 makes a previous­ of shoulder spines, and the presence of a ly planned petition to the I.C.Z.N. for secon.d row of spines on the first spiral ridge retention of C. cancel lata unnecessary. anten?r to the shoulder. These spines are open m C. gladiator, but in C. centrota they Subgenus SVELTIA Jousseaume, 1887 are largely closed. Also, C. centrota is a Sveltia JOUSSEAUME, 1887, Le Naturaliste, ser. much heavier and thicker shell. Cancellaria 2, v. 1, fasc. 18, p. 214. gladiator is also closely allied to C. trochilia Type, by original designation, "Sveltia varicosa Broce." ( = Voluta varricosa Brocchi, 1814). Olsson.' 1964, from the Neogene of Ecuador, Pliocene, Italy. but differs from that species by having longer, more delicate spines, and by the CANCELLARIA (SVE LTIA) GLADIATOR presence of fewer and stronger spiral cords. n. sp. The large size and long spines, as well as the Plate 1, fig. 2 second row of spines, easily separates C. Diagnosis: Protoconch smooth, helicoidal, gladiator from the Recent Panamic Pacific C. composed of just over three whorls. Protoconch centrota Dall. eroded on most adult specimens, but prominent on All known specimens were dredged by juveniles. Body whorl large, for ming over two­ Mrs. Jacqueline DeRoy, Isla Santa Cruz, thirds of total length of shell ; the whorls well shouldered, with long spines at regular intervals. Galapagos Islands. Paratypes have been dis­ Sculpture consisting of five to seven well-formed tributed to other interested institutions. varices, which are produced into long, open spines Genus OLSSONELLA Petit, 1970 at the shoulder angle, with smaller but prominent spines on the spiral ridge immediately below the Olssonella PETIT, 1970, Tulane Stud. Geol. shoulder. The posterior one-third of the body Paleont., v. 8, no. 2, p. 83. whorl devoid of sculpture except for the spiral Type, by original designation, Cancellaria smithii cord at the shoulder. The anterior portion of the Dall, 1888. Recent , tropical Western Atlantic. body whorl consisting of about seven widely spaced spiral cords, which produce short spines at OL SSO N ELLA PANAMICA n.
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