FAMILY Alepocephalidae Bonaparte, 1846 - slickheads, nakedheads [=Alepocephalini, Aulastomatomorphinae, Bathylaconidae, ?Triuridae, Bathyprionidae] Notes: Alepocephalini Bonaparte, 1846:5, 34 [ref. 519] (subfamily) Alepocephalus Aulastomatomorphinae Fowler, 1934a:256 [ref. 1416] (subfamily) Aulastomatomorpha Bathylaconidae Parr, 1948:48, 51 [ref. 31913] (family) Bathylaco ?Triuridae Whitley, 1954a:62 [ref. 4720] (family) Triurus Lacepède [unidentifiable type genus, in Molidae?] Bathyprionidae Marshall, 1966a:3 [ref. 2894] (family) Bathyprion GENUS Alepocephalus Risso, 1820 - slickheads [=Alepocephalus Risso [A.], 1820:270, Brunichthys Parr [A. E.], 1951:8, Halisauriceps Fowler [H. W.], 1934:247, Lloydiella (subgenus of Alepocephalus) Parr [A. E.], 1952:256, 259, Mitchillina Jordan [D. S.] & Evermann [B. W.], 1896:452, 453, Noriona Strand [E.], 1942:401, Normania Parr [A. E.], 1937:5, 9, Proditor Whitley [G. P.], 1940:407] Notes: [ref. 3756]. Masc. Alepocephalus rostratus Risso, 1820. Type by monotypy. Alepidocephalus Agassiz, 1846:14 [ref. 64] is an unjustified emendation. •Valid as Alepocephalus Risso, 1820 -- (Krefft 1973:86 [ref. 7166], Markle & Quéro in Whitehead et al. 1984:228 [ref. 13675], Amaoka in Masuda et al. 1984:42 [ref. 6441], Markle 1986:219 [ref. 5687], Paxton et al. 1989:209 [ref. 12442], Sazonov & Markle 1990:111 [ref. 21681], Gomon et al. 1994:242 [ref. 22532], Sazonov & Markle 1999:1892 [ref. 24739], Mecklenburg et al. 2002:165 [ref. 25968], Carter & Hartel 2003:876 [ref. 27000], Hoese et al. 2006:385 [ref. 29035], Williams & Sazonov 2008:202 [ref. 30623], Mecklenburg et al. 2011:118 [ref. 31212]). Current status: Valid as Alepocephalus Risso, 1820. Alepocephalidae. (Brunichthys) [ref. 3380]. Masc. Alepocephalus asperifrons Garman, 1899. Type by original designation (also monotypic). Derivation of name not given originally [probably for Anton Bruun]; spelled Bruunichthys by Parr 1952:255 [ref. 3381]; name used only once in 1951 and if that is regarded as a misprint then it can be corrected; otherwise name should stand as Brunichthys. •Synonym of Alepocephalus Risso, 1820. Current status: Synonym of Alepocephalus Risso, 1820. Alepocephalidae. (Halisauriceps) [ref. 1416]. Neut. Alepocephalus longiceps Lloyd, 1909. Type by original designation (also monotypic). •Synonym of Alepocephalus Risso, 1820 -- (Parr 1951:4 [ref. 3380]). Current status: Synonym of Alepocephalus Risso, 1820. Alepocephalidae. (Lloydiella) [ref. 3381]. Fem. Alepocephalus bicolor Alcock, 1891. Type by original designation (also monotypic). Type designated in key. •Synonym of Alepocephalus Risso, 1820. Current status: Synonym of Alepocephalus Risso, 1820. Alepocephalidae. (Mitchillina) [ref. 2443]. Fem. Alepocephalus bairdii Goode & Bean, 1879. Type by original designation. •Synonym of Alepocephalus Risso, 1820. Current status: Synonym of Alepocephalus Risso, 1820. Alepocephalidae. (Noriona) [ref. 4289]. Fem. Alepocephalus andersoni Fowler, 1834. Type by being a replacement name. Replacement for Normania Parr, 1937, preoccupied by Normania Brady, 1866 in Crustacea, Normania Bowerbank, 1869 in sponges, and Normania Boeck, 1871 in Crustacea; but Normania Parr, replaced earlier by Proditor Whitley, 1940. •Objective synonym of Proditor Whitley, 1940. •Synonym of Alepocephalus Risso, 1820. Current status: Synonym of Alepocephalus Risso, 1820. Alepocephalidae. (Normania) [ref. 3376]. Fem. Alepocephalus andersoni Fowler, 1934. Type by original designation (also monotypic). Objectively invalid; preoccupied by Normania Brady, 1866 in Crustacea, Normania Bowerbank, 1869 in sponges, and Normania Boeck, 1871 in Crustacea; replaced by Proditor Whitley, 1940 and by Noriona Strand, 1942. •In the synonymy of Alepocephalus Risso, 1820 -- (Parr 1951:4 [ref. 3380]). Current status: Synonym of Alepocephalus Risso, 1820. Alepocephalidae. (Proditor) [ref. 4699]. Masc. Alepocephalus andersoni Fowler, 1934. Type by being a replacement name. Replacement for Normania Parr, 1937, preoccupied by Normania Brady, 1866 in Crustacea, Normania Bowerbank, 1869 in sponges, and Normania Boeck, 1871 in Crustacea. •Synonym of Alepocephalus Risso, 1820 -- (Parr 1951:4 [ref. 3380]). Current status: Synonym of Alepocephalus Risso, 1820. Alepocephalidae.

Species Alepocephalus agassizii Goode & Bean, 1883 - Agassiz' slickhead [=Alepocephalus agassizii Goode [G. B.] & Bean [T. H.], 1883:218] Notes: [Bulletin of the Museum of Comparative Zoology v. 10 (no. 5); ref. 1838] Western North Atlantic [off New Jersey, U.S.A.], 38°18'40"N, 73°18'10"W, Blake station 338, depth 922 fathoms. Current status: Valid as Alepocephalus agassizii Goode & Bean, 1883. Alepocephalidae. Distribution: Greenland and both sides of the North Atlantic. Habitat: marine.

Species Alepocephalus andersoni Fowler, 1934 - Bohol slickhead (author) [=Alepocephalus andersoni Fowler [H. W.], 1934:246, Fig. 8] Notes: [Proceedings of the Academy of Natural Sciences of Philadelphia v. 85 (for 1933); ref. 1416] Between Siquijor and Bohol islands, Philippines, Albatross station D.5527, depth 392 fathoms. Current status: Valid as Alepocephalus andersoni, Fowler 1934. Alepocephalidae. Distribution: Western Pacific. Habitat: marine.

Species Alepocephalus antipodiana (Parrott, 1948) - Kaikoura slickhead (author) [=Bathytroctes antipodiana Parrott [A. W.], 1948:143, Pl. 31] Notes: [Records of the Canterbury Museum v. 5; ref. 13067] Kaikoura, New Zealand. Current status: Valid as Alepocephalus antipodianus (Parrott, 1948). Alepocephalidae. Distribution: Worldwide in tropical and subtropical seas. Habitat: marine.

Species Alepocephalus asperifrons Garman, 1899 - Panama slickhead (author) [=Alepocephalus asperifrons Garman [S.], 1899:291, Pl. 59 (fig. 1)] Notes: [Memoirs of the Museum of Comparative Zoology v. 24; ref. 1540] Gulf of Panama, 6°-7°N, 79°-81°W, Albatross station 3357 and 3393, depth 782-1020 fathoms. Current status: Valid as Alepocephalus asperifrons Garman, 1899. Alepocephalidae. Distribution: Eastern Pacific. Habitat: marine.

Species Alepocephalus australis Barnard, 1923 - small scaled brown slickhead [=Alepocephalus australis Barnard [K. H.], 1923:440, Alepocephalus barnardi Norman [J. R.], 1930:270] Notes: [Annals of the South African Museum v. 13 (pt 8, no. 14); ref. 191] Off Cape Point, South Africa, depth 630 fathoms [1152 meters]. Current status: Valid as Alepocephalus australis Barnard, 1923. Alepocephalidae. Distribution: Circumglobal, mostly in Southern Hemisphere. Habitat: marine. (barnardi) [Discovery Reports v. 2; ref. 3219] Off Cape Point, South Africa, depth 700 fathoms. Current status: Synonym of Alepocephalus australis Barnard, 1923. Alepocephalidae. Habitat: marine. Species Alepocephalus bairdii Goode & Bean, 1879 - Baird's slickhead [=Alepocephalus bairdii Goode [G. B.] & Bean [T. H.], 1879:56, Alepocephalus giardi Köhler [R.], 1896:513, Pl. 26 (fig. 1)] Notes: [Proceedings of the United States National Museum v. 2 (no. 68); ref. 18136] Grand Banks, northwestern Atlantic, depth 200 fathoms. Current status: Valid as Alepocephalus bairdii Goode & Bean, 1879. Alepocephalidae. Distribution: North Atlantic. Habitat: marine. (giardi) [Annales de l'Université de Lyon. Paris [etc.] v. 26; ref. 14612] Bay of Biscay, station 4, 1410 m; station 10, depth 800 meters. Current status: Synonym of Alepocephalus bairdii Goode & Bean, 1879. Alepocephalidae. Habitat: marine.

Species Alepocephalus bicolor Alcock, 1891 - bicolor slickhead [=Alepocephalus bicolor Alcock [A. W.], 1891:133] Notes: [Annals and Magazine of Natural History (Series 6) v. 8 (no. 43/44); ref. 87] Bay of Bengal, 15°56'50"N, 81°30.5'E, Investigator station 120, depth 240-276 fathoms. Current status: Valid as Alepocephalus bicolor Alcock, 1891. Alepocephalidae. Distribution: Indo-West Pacific. Habitat: marine.

Species Alepocephalus blanfordii Alcock, 1892 - Blanford's slickhead (author) [=Alepocephalus blanfordii Alcock [A. W.], 1892:357] Notes: [Annals and Magazine of Natural History (Series 6) v. 10 (no. 59); ref. 88] Gulf of Manaar, south of Cape Comorin, 6°58'N, 77°26'50"E, Investigator station 128, depth 902 fathoms. Current status: Valid as Alepocephalus blanfordii Alcock, 1892. Alepocephalidae. Distribution: Indian Ocean; Hawaiian Islands. Habitat: marine.

Species Alepocephalus dentifer Sazonov & Ivanov, 1979 - dentifer slickhead (author) [=Alepocephalus dentifer Sazonov [Yu. I.] & Ivanov [A. N.], 1979:1008, Fig. 4] Notes: [Voprosy Ikhtiologii v. 19 (no. 6); ref. 8668] Southeastern Indian Ocean, 11°24.3'S, 88°50'E, depth 1500-1600 meters. Current status: Valid as Alepocephalus dentifer Sazonov & Ivanov, 1979. Alepocephalidae. Distribution: Indian Ocean: east Indian Ridge. Habitat: marine.

Species Alepocephalus fundulus Garman, 1899 - fundulus slickhead (author) [=Alepocephalus fundulus Garman [S.], 1899:293, Pl. 57 (fig. 2)] Notes: [Memoirs of the Museum of Comparative Zoology v. 24; ref. 1540] Off Pacific coast of Panama, 6°-7°N, 79°-82°W, Albatross station 3360 and 3392, depth 1270-1672 fathoms. Current status: Valid as Alepocephalus fundulus Garman, 1899. Alepocephalidae. Distribution: Eastern Pacific. Habitat: marine.

Species Alepocephalus longiceps Lloyd, 1909 - longfin slickhead [=Alepocephalus longiceps Lloyd [R. E.], 1909:147, Pl. 44] Notes: [Memoirs of the Indian Museum v. 2 (no. 3); ref. 2814] Bay of Bengal, depth 693 fathoms. Current status: Valid as Alepocephalus longiceps Lloyd, 1909. Alepocephalidae. Distribution: Western Pacific and southeastern Indian Ocean. Habitat: marine.

Species Alepocephalus longirostris Okamura & Kawanishi, in Okamura & Kitajima, 1984 - longsnout slickhead [=Alepocephalus longirostris Okamura [O.] & Kawanishi [I.], in Okamura & Kitajima, 1984:115, Pl. 77] Notes: [Fishes of the Okinawa Trough and the adjacent waters v. 1; ref. 8057] East China Sea, 26°21.1'N, 124°50.7'E, depth 1000-1140 meters. Current status: Valid as Alepocephalus longirostris Okamura & Kawanishi, 1984. Alepocephalidae. Distribution: Western Pacific. Habitat: marine. Species Alepocephalus melas de Buen, 1961 - melas slickhead (author) [=Alepocephalus melas de Buen [F.], 1961:2, Fig. 1] Notes: [Montemar No. 1; ref. 698] Off Valparaíso, Chile. Current status: Valid as Alepocephalus melas de Buen 1961. Alepocephalidae. Distribution: Chile. Habitat: marine.

Species Alepocephalus owstoni Tanaka, 1908 - Owston's slickhead [=Alepocephalus owstoni Tanaka [S.], 1908:27, Pl. 1 (fig. 6)] Notes: [Journal of the College of Science. Imperial University, Tokyo v. 23 (art. 7); ref. 6032] Off Okinose, Sagami Sea, Japan. Current status: Valid as Alepocephalus owstoni Tanaka, 1908. Alepocephalidae. Distribution: Western Pacific. Habitat: marine.

Species Alepocephalus planifrons Sazonov, 1993 - planifrons slickhead (author) [=Alepocephalus planifrons Sazonov [Yu. I.], 1993:707] Notes: [Voprosy Ikhtiologii v. 33 (no. 5); ref. 21900] Southeastern Pacific, 17°46'S, 71°45'W, depth 720-750 meters. Current status: Valid as Alepocephalus planifrons Sazonov, 1993. Alepocephalidae. Distribution: Southeastern Pacific. Habitat: marine.

Species Alepocephalus productus Gill, 1883 - smalleye smooth-head [=Alepocephalus productus Gill [T. N.], 1883:256] Notes: [Proceedings of the United States National Museum v. 6 (no. 380); ref. 1724] Gulf Stream off eastern U.S.A., 39°26'16"N, 70°02'37"W, Albatross station 2035, depth 1362 fathoms. Current status: Valid as Alepocephalus productus Gill, 1883. Alepocephalidae. Distribution: Cosmopolitan. Habitat: marine.

Species Alepocephalus rostratus Risso, 1820 - Risso's smooth-head [=Alepocephalus rostratus Risso [A.], 1820:271, Pl. 10 (fig. 4)] Notes: [Memorie della Reale Accademia delle Scienze di Torino v. 25; ref. 3756] Nice, France, northwestern Mediterranean Sea. Current status: Valid as Alepocephalus rostratus Risso, 1820. Alepocephalidae. Distribution: Western Mediterranean Sea, eastern Atlantic: off Ireland and Bay of Biscay south to Cape Verde Islands. Habitat: marine.

Species Alepocephalus tenebrosus Gilbert, 1892 - California slickhead [=Alepocephalus tenebrosus Gilbert [C. H.], 1892:545] Notes: [Proceedings of the United States National Museum v. 14 (no. 880); ref. 1626] Santa Barbara Channel, California, U.S.A., depth 359-822 fathoms. Current status: Valid as Alepocephalus tenebrosus Gilbert, 1892. Alepocephalidae. Distribution: Eastern Pacific. Habitat: marine.

Species Alepocephalus triangularis Okamura & Kawanishi, in Okamura & Kitajima, 1984 - triangulate slickhead [=Alepocephalus triangularis Okamura [O.] & Kawanishi [I.], in Okamura & Kitajima, 1984:119, Pl. 78] Notes: [Fishes of the Okinawa Trough and the adjacent waters v. 1; ref. 8057] Okinawa Trough, 26°21'N, 124°50.7'E, depth 1000-1140 meters. Current status: Valid as Alepocephalus triangularis Okamura & Kawanishi, 1984. Alepocephalidae. Distribution: Western Pacific. Habitat: marine.

Species Alepocephalus umbriceps Jordan & Thompson, 1914 - slickhead [=Alepocephalus umbriceps Jordan [D. S.] & Thompson [W. F.], 1914:209, Pl. 24 (fig. 1)] Notes: [Memoirs of the Carnegie Museum v. 6 (no. 4); ref. 2543] Aomori, Japan. Current status: Valid as Alepocephalus umbriceps Jordan & Thompson, 1914. Alepocephalidae. Distribution: Western North Pacific. Habitat: marine.

GENUS Asquamiceps Zugmayer, 1911 - slickheads [=Asquamiceps Zugmayer [E.], 1911:2, Megalepocephalus (subgenus of Asquamiceps) Fowler [H. W.], 1934:248, Perioceps (subgenus of Asquamiceps) Parr [A. E.], 1954:5] Notes: [ref. 6161]. Neut. Asquamiceps velaris Zugmayer, 1911. Type by monotypy. Also appeared in Zugmayer 1911 (Dec.):10 [ref. 4846]. •Valid as Asquamiceps Zugmayer, 1911 -- (Krefft 1973:88 [ref. 7166], Markle 1980 [ref. 6077], Markle & Quéro in Whitehead et al. 1984:233 [ref. 13675], Markle 1986:219 [ref. 5687], Paxton et al. 1989:210 [ref. 12442], Sazonov & Markle 1999:1892 [ref. 24739], Carter & Hartel 2003:876 [ref. 27000], Hoese et al. 2006:386 [ref. 29035]). Current status: Valid as Asquamiceps Zugmayer, 1911. Alepocephalidae. (Megalepocephalus) [ref. 1416]. Masc. Asquamiceps longmani Fowler, 1934. Type by original designation (also monotypic). •Synonym of Asquamiceps Zugmayer, 1911 -- (Markle 1980:45 [ref. 6077]). Current status: Synonym of Asquamiceps Zugmayer, 1911. Alepocephalidae. (Perioceps) [ref. 3383]. Neut. Asquamiceps (Perioceps) pacificus Parr, 1954. Type by original designation (also monotypic). •Synonym of Asquamiceps Zugmayer, 1911 -- (Markle 1980:45 [ref. 6077]). Current status: Synonym of Asquamiceps Zugmayer, 1911. Alepocephalidae.

Species Asquamiceps caeruleus Markle, 1980 - Markle's slickhead (author) [=Asquamiceps caeruleus Markle [D. F.], 1980:47, Figs. 1-3] Notes: [Bulletin of Marine Science v. 30 (no. 1); ref. 6077] Northeastern Atlantic, 14°11'N, 18°28'W, depth 0-2000 meters. Current status: Valid as Asquamiceps caeruleus Markle, 1980. Alepocephalidae. Distribution: Cosmopolitan. Habitat: marine.

Species Asquamiceps hjorti (Koefoed, 1927) - Hjort slickhead [=Alepocephalus hjorti Koefoed [E.], 1927:43, Pl. 3 (fig. 7)] Notes: [Scientific Results of the Michael Sars North Atlantic Deep-Sea Expedition 1910 v. 4 (pt 1); ref. 2650] North Atlantic, 34°59'N, 33°01'W, station 53, depth 2615-2865 meters. Current status: Valid as Asquamiceps hjorti (Koefoed, 1927). Alepocephalidae. Distribution: Atlantic and Indo-Pacific. Habitat: marine.

Species Asquamiceps longmani Fowler, 1934 - Boni slickhead (author) [=Asquamiceps longmani Fowler [H. W.], 1934:248, Fig. 9] Notes: [Proceedings of the Academy of Natural Sciences of Philadelphia v. 85 (for 1933); ref. 1416] Gulf of Boni, Sulawesi, Indonesia, Albatross station 5655, depth 608 fathoms. Current status: Valid as Asquamiceps longmani Fowler, 1934. Alepocephalidae. Distribution: Western Pacific. Habitat: marine.

Species Asquamiceps velaris Zugmayer, 1911 - fanfin smooth-head [=Asquamiceps velaris Zugmayer [E.], 1911:2, Asquamiceps (Asquamiceps) indagatio Parr [A. E.], 1954:(4) 5] Notes: [Bulletin de l'Institut Océanographique (Monaco) No. 193; ref. 6161] Off Portugal, 36°06'N, 9°00'W, station 3039, depth 0-3660 meters. Current status: Valid as Asquamiceps velaris Zugmayer, 1911. Alepocephalidae. Distribution: Circumglobal. Habitat: marine. (indagatio) [American Museum Novitates No. 1655; ref. 3383] South Atlantic, 33°50'-34°13'S, 16°04'-15°49'E, depth 2580 meters. Current status: Synonym of Asquamiceps velaris Zugmayer, 1911. Alepocephalidae. Habitat: marine.

GENUS Aulastomatomorpha Alcock, 1890 - slickheads [=Aulastomatomorpha Alcock [A. W.], 1890:307] Notes: [ref. 83]. Fem. Aulastomatomorpha phospherops Alcock, 1890. Type by monotypy. Spelled Aulastomomorpha by Alcock 1899:168, 178 [ref. 5114]. •Valid as Aulastomatomorpha Alcock, 1890 -- (Markle & Sazonov 1996:497 [ref. 22398], Sazonov & Markle 1999:1892 [ref. 24739], Hoese et al. 2006:386 [ref. 29035]). Current status: Valid as Aulastomatomorpha Alcock, 1890. Alepocephalidae.

Species Aulastomatomorpha phospherops Alcock, 1890 - luminous slickhead [=Aulastomatomorpha phospherops Alcock [A. W.], 1890:307] Notes: [Annals and Magazine of Natural History (Series 6) v. 6 (no. 34); ref. 83] Off Elicapeni Bank, Laccadive Sea, 11°12'47"N, 74°25'30"E, Investigator station 104, depth 1000 fathoms. Current status: Valid as Aulastomatomorpha phospherops Alcock, 1890. Alepocephalidae. Distribution: Indo-West Pacific. Habitat: marine.

GENUS Bathytroctes Günther, 1878 - slickheads [=Bathytroctes Günther [A.], 1878:249, Grimatroctes Parr [A. E.], 1952:265, Lepogenys Parr [A. E.], 1951:5, Nomoctes (subgenus of Bathytroctes) Parr [A. E.], 1952:266] Notes: [ref. 2010]. Masc. Bathytroctes microlepis Günther, 1878. Type by subsequent designation. Type apparently first designated by Jordan 1919:395 [ref. 4904]; Goode & Bean 1896:40 [ref. 1848] wrongly designated B. macrolepis Günther, a species not described until 1887. •Valid as Bathytroctes Günther, 1878 -- (Markle & Quéro in Whitehead et al. 1984:236 [ref. 13675], Markle 1986:220 [ref. 5687], Sazonov 1999:734 [ref. 24845], Sazonov & Markle 1999:1891 [ref. 24739], Sazonov & Williams 2001:S31 [ref. 26712], Carter & Hartel 2003:877 [ref. 27000], Hoese et al. 2006:387 [ref. 29035]). Current status: Valid as Bathytroctes Günther, 1878. Alepocephalidae. (Grimatroctes) [ref. 3381]. Masc. Bathytroctes grimaldii Zugmayer 1911. Type by original designation. •Valid as Grimatroctes Parr, 1952 -- (Krefft 1973:90 [ref. 7166]). •Synonym of Bathytroctes Günther, 1878 -- (Sazonov 1999:734 [ref. 24845]). Current status: Synonym of Bathytroctes Günther, 1878. Alepocephalidae. (Lepogenys) [ref. 3380]. Fem. Bathytroctes squamosus Alcock, 1890. Type by original designation (also monotypic). •Synonym of Bathytroctes Günther, 1878 -- (Sazonov 1999:734 [ref. 24845]). Current status: Synonym of Bathytroctes Günther, 1878. Alepocephalidae. (Nomoctes) [ref. 3381]. Masc. Bathytroctes michaelsarsi Koefoed, 1927. Type by original designation (also monotypic). •Valid as Nomoctes Parr, 1952 -- (Anderson et al. 1986:798 [ref. 5164]). •Synonym of Bathytroctes Günther, 1878 -- (Sazonov 1999:734 [ref. 24845], Sazonov & Williams 2001:S31 [ref. 26712]). Current status: Synonym of Bathytroctes Günther, 1878. Alepocephalidae.

Species Bathytroctes breviceps Sazonov, 1999 - Indian deepsea slickhead (author) [=Bathytroctes breviceps Sazonov [Yu. I.], 1999:738 [703], Fig. 1] Notes: [Voprosy Ikhtiologii v. 39 (no. 6); ref. 24845] Indian Ocean, 9°48.5'S, 60°42'E, depth 1650 meters. Current status: Valid as Bathytroctes breviceps Sazonov, 1999. Alepocephalidae. Distribution: Indian Ocean. Habitat: marine.

Species Bathytroctes elegans Sazonov & Ivanov, 1979 - elegant slickhead (author) [=Bathytroctes elegans Sazonov [Yu. I.] & Ivanov [A. N.], 1979:1006, Fig. 1] Notes: [Voprosy Ikhtiologii v. 19 (no. 6); ref. 8668] Northern Indian Ocean, 8°26.4'S, 59°29'E, depth 1260-1300 meters. Current status: Valid as Bathytroctes elegans Sazonov & Ivanov, 1979. Alepocephalidae. Distribution: Northern Indian Ocean. Habitat: marine.

Species Bathytroctes inspector Garman, 1899 - Inspector slickhead (author) [=Bathytroctes inspector Garman [S.], 1899:288, Pl. M (fig. 1)] Notes: [Memoirs of the Museum of Comparative Zoology v. 24; ref. 1540] West of Colombia, 6°10'N, 83°6'W, Albatross station 3361, depth 1471 fathoms. Current status: Valid as Bathytroctes inspector Garman, 1899. Alepocephalidae. Distribution: Eastern Pacific. Habitat: marine.

Species Bathytroctes macrognathus Sazonov, 1999 - Cosmo slickhead [=Bathytroctes macrognathus Sazonov [Yu. I.], 1999:740 [706], Fig. 2] Notes: [Voprosy Ikhtiologii v. 39 (no. 6); ref. 24845] 5°25'S, 47°09'E, depth 4820 meters. Current status: Valid as Bathytroctes macrognathus Sazonov, 1999. Alepocephalidae. Distribution: Cosmopolitan. Habitat: marine.

Species Bathytroctes macrolepis Gunther, 1887 - Koefoed's smooth-head [=Bathytroctes macrolepis Günther [A.], 1887:225, Pl. 57 (fig. B), Bathytroctes alvifrons Garman [S.], 1899:286, Pl. 58 (figs. 2-2a), Bathytroctes koefoedi Parr [A. E.], 1951:11] Notes: [Report on the Scientific Results of the Voyage of H. M. S. Challenger v. 22 (pt 57); ref. 2013] 2°55'N, 124°53'E, north of Sulawesi, Challenger station 198, depth 2150 fathoms. Current status: Valid as Bathytroctes macrolepis Günther, 1887. Alepocephalidae. Distribution: Cosmopolitan. Habitat: marine. (alvifrons) [Memoirs of the Museum of Comparative Zoology v. 24; ref. 1540] South of Cape Mala, 6°21'N, 80°41'W, Albatross station 3382. Current status: Synonym of Bathytroctes macrolepis Günther, 1887. Alepocephalidae. Habitat: marine. (koefoedi) [American Museum Novitates No. 1531; ref. 3380] North Atlantic, 34°59'N, 33°01'W, depth 2865 meters. Current status: Synonym of Bathytroctes macrolepis Günther, 1887. Alepocephalidae. Distribution: Cosmopolitan [if valid]. Habitat: marine.

Species Bathytroctes michaelsarsi Koefoed, 1927 - Michael Sars smooth-head [=Bathytroctes michaelsarsi Koefoed [E.], 1927:48, Pl. 3 (fig. 9)] Notes: [Scientific Results of the Michael Sars North Atlantic Deep-Sea Expedition 1910 v. 4 (pt 1); ref. 2650] North Atlantic, 34°59'N, 33°01'W, station 53, depth 2865 meters. Current status: Valid as Bathytroctes michaelsarsi Koefoed, 1927. Alepocephalidae. Distribution: Atlantic. Habitat: marine.

Species Bathytroctes microlepis Gunther, 1878 - smallscale smooth-head [=Bathytroctes microlepis Günther [A.], 1878:249 [22], Bathytroctes grimaldii Zugmayer [E.] 1911:1] Notes: [Annals and Magazine of Natural History (Series 5) v. 2 (nos 7/8/9)(art. 2/22/28); ref. 2010] Atlantic off Portugal, southeastern of Cape Vincent, 35°47'N, 8°23'W, depth 1090 fathoms. Current status: Valid as Bathytroctes microlepis Günther, 1878. Alepocephalidae. Distribution: Cosmopolitan, except Polar waters. Habitat: marine. (grimaldii) [Bulletin de l'Institut Océanographique (Monaco) No. 193; ref. 6161] Off Portugal, 37°38'N, l0°53'W, station 3024, depth 0-4900 meters. Current status: Synonym of Bathytroctes microlepis Günther, 1878. Alepocephalidae. Habitat: marine.

Species Bathytroctes oligolepis (Krefft, 1970) - oligolepis slickhead (author) [=Grimatroctes oligolepis Krefft [G.], 1970:40, Fig. 1] Notes: [Archiv für Fischereiwissenschaft v. 21 (no. 1); ref. 7755] 7°45'S, 13°34'W, depth 1800-0 meters. Current status: Valid as Bathytroctes oligolepis (Krefft, 1970). Alepocephalidae. Distribution: Cosmopolitan. Habitat: marine.

Species Bathytroctes pappenheimi (Fowler, 1934) - Pappenheim's slickhead (author) [=Narcetes pappenheimi Fowler [H. W.], 1934:253, Fig. 15] Notes: [Proceedings of the Academy of Natural Sciences of Philadelphia v. 85 (for 1933); ref. 1416] Gulf of Tomini, Sulawesi, Indonesia, 0°08'00"S, 121°19'00"E, Albatross station D.5608, depth 1092 fathoms. Current status: Valid as Bathytroctes pappenheimi (Fowler, 1934). Alepocephalidae. Distribution: Western Pacific. Habitat: marine.

Species Bathytroctes squamosus Alcock, 1890 - deepscale slickhead [=Bathytroctes squamosus Alcock [A. W.], 1890:303] Notes: [Annals and Magazine of Natural History (Series 6) v. 6 (no. 34); ref. 83] About 75 miles west of Goa coast, Laccadive Sea, 15°02'N, 72°34'E, Investigator station 105, depth 740 fathoms. Current status: Valid as Bathytroctes squamosus Alcock, 1890. Alepocephalidae. Distribution: Indian Ocean to Indo-Australian Archipelago, records elsewhere suspect. Habitat: marine.

Species Bathytroctes zugmayeri Fowler, 1934 - Zugmayer's slickhead [=Bathytroctes zugmayeri Fowler [H. W.], 1934:250, Fig. 13, Grimatroctes bullisi Grey [M.], 1958:150, Fig. 22, Bathytroctes danae Parr [A. E.], 1951:12] Notes: [Proceedings of the Academy of Natural Sciences of Philadelphia v. 85 (for 1933); ref. 1416] Gulf of Boni, Sulawesi, Indonesia, 3°42'00"S, 120°45'50"E, Albatross station D.5654, depth 805 fathoms. Current status: Valid as Bathytroctes zugmayeri Fowler 1934. Alepocephalidae. Distribution: Atlantic and Indo-West Pacific. Habitat: marine. (bullisi) [Fieldiana Zoology v. 39 (no. 16); ref. 12068] Gulf of Mexico, 28°47'N, 87°50'W, Oregon station 1303, depth 1150-1200 fathoms. Current status: Synonym of Bathytroctes zugmayeri Fowler, 1934. Alepocephalidae. Habitat: marine. (danae) [American Museum Novitates No. 1531; ref. 3380] South China Sea, 15°22'N, 115°20'E, depth 200 meters. Current status: Synonym of Bathytroctes zugmayeri Fowler, 1934. Alepocephalidae. Habitat: marine.

GENUS Bajacalifornia Townsend & Nichols, 1925 - slickheads [=Bajacalifornia Townsend [C. H.] & Nichols [J. T.], 1925:8] Notes: [ref. 4420]. Fem. Bajacalifornia burragei Townsend & Nichols, 1925. Type by monotypy. •Valid as Bajacalifornia Townsend & Nichols, 1925 -- (Krefft 1973:88 [ref. 7166], Markle & Quéro in Whitehead et al. 1984:233 [ref. 13675], Amaoka in Masuda et al. 1984:43 [ref. 6441], Markle & Krefft 1985:346 [ref. 6789], Markle 1986:219 [ref. 5687], Sazonov 1988 [ref. 14118], Miya & Markle 1993 [ref. 20988], Sazonov & Markle 1999:1891 [ref. 24739], Sazonov & Williams 2001:S10 [ref. 26712], Carter & Hartel 2003:877 [ref. 27000], Hoese et al. 2006:387 [ref. 29035]). Current status: Valid as Bajacalifornia Townsend & Nichols, 1925. Alepocephalidae.

Species Bajacalifornia aequatoris Miya & Markle, 1993 - aequatoris slickhead (author) [=Bajacalifornia aequatoris Miya [M.] & Markle [D. F.], 1993:743, Figs. 1-2] Notes: [Copeia 1993 (no. 3); ref. 20988] Central equatorial Pacific, 0°01'N, 159°57.5'W, depth 0-1495 meters. Current status: Valid as Bajacalifornia aequatoris Miya & Markle, 1993. Alepocephalidae. Distribution: Central equatorial Pacific. Habitat: marine.

Species Bajacalifornia arcylepis Markle & Krefft, 1985 - network slickhead [=Bajacalifornia arcylepis Markle [D. F.] & Krefft [G.], 1985:348, Fig. 4A] Notes: [Copeia 1985 (no. 2); ref. 6789] Atlantic Ocean, 27°38'-27°43'N, 52°22'-52°20'W, depth 0-2000 meters. Current status: Valid as Bajacalifornia arcylepis Markle & Krefft, 1985. Alepocephalidae. Distribution: Western Indian Ocean, Atlantic. Habitat: marine.

Species Bajacalifornia burragei Townsend & Nichols, 1925 - sharpchin slickhead [=Bajacalifornia burragei Townsend [C. H.] & Nichols [J. T.], 1925:8, Fig. 3] Notes: [Bulletin of the American Museum of Natural History v. 52 (art. 1); ref. 4420] Off Todos Santos Bay, 31°28'45"N, 117°09'50"W, Baja California, Mexico, Albatross station 5674, depth 590 fathoms. Current status: Valid as Bajacalifornia burragei Townsend & Nichols, 1925. Alepocephalidae. Distribution: Eastern Pacific. Habitat: marine.

Species Bajacalifornia calcaratus (Weber, 1913) - brown slickhead [=Bathytroctes calcaratus Weber [M.], 1913:11, Pl. 4 (figs. 5-5a)] Notes: [Die Fische der Siboga-Expedition; ref. 4602] Makassar Strait, Sulawesi, 0°36.5'S, 119°29.5'E, depth 724 meters; Ceram Sea 3°27.0'S, 131°0.5'E, depth 567 meters, Siboga station 85 and 173. Current status: Valid as Bajacalifornia calcarata (Weber, 1913). Alepocephalidae. Distribution: Atlantic and Indo-West Pacific. Habitat: marine.

Species Bajacalifornia megalops (Lutken, 1898) - bigeye smooth-head [=Cyclothone megalops Lütken [C. F.], 1898:10, Pl. 4 (fig. 1), Bathytroctes drakei Beebe [W.], 1929:6, Bajacalifornia erimoensis Amaoka [K.] & Abe [K.], 1977:185, Figs. 1, 4 (A, C-E)] Notes: [Danish Ingolf expedition; ref. 14687] Between Iceland and Greenland, 64°38'N, 32°37'W, depth 1040 fathoms. Current status: Valid as Bajacalifornia megalops (Lütken, 1898). Alepocephalidae. Distribution: Circumglobal, except Polar waters. Habitat: marine. (drakei) [Zoologica, Scientific Contributions of the New York Zoological Society v. 12 (no. 1); ref. 15884] Western Atlantic, 39°15'N, 72°00'W, depth 800 fathoms. Current status: Synonym of Bajacalifornia megalops (Lütken, 1898). Alepocephalidae. Habitat: marine. (erimoensis) [Japanese Journal of Ichthyology v. 23 (no. 4); ref. 7227] Off Cape Erimo, Hokkaido, Japan, depth 970 meters. Current status: Synonym of Bajacalifornia megalops (Lütken, 1898). Alepocephalidae. Distribution: Cosmopolitan. Habitat: marine.

Species Bajacalifornia microstoma Sazonov, 1988 - microstoma slickhead (author) [=Bajacalifornia microstoma Sazonov [Yu. I.], 1988:1593, Fig.] Notes: [Zoologicheskii Zhurnal v. 67 (no. 10); ref. 14118] South China Sea, 11°09'N, 110°10'E, depth 1000-1280. Current status: Valid as Bajacalifornia microstoma Sazonov, 1988. Alepocephalidae. Distribution: Tropical Indo-West Pacific. Habitat: marine.

GENUS Bathylaco Goode & Bean, 1896 - slickheads [=Bathylaco Goode [G. B.] & Bean [T. H.], 1896:57, Macromastax Beebe [W.], 1933:161] Notes: [ref. 1848]. Masc. Bathylaco nigricans Goode & Bean, 1896. Type by monotypy. •Valid as Bathylaco Goode & Bean, 1896 -- (Nielsen & Larsen 1968:221 [ref. 7907], Nielsen 1972:30 [ref. 3197], Nielsen 1973:85 [ref. 6885], Iwamoto et al. 1976 [ref. 7089], Markle & Quéro in Whitehead et al. 1984:234 [ref. 13675], Markle 1986:220 [ref. 5687], Sazonov & Markle 1999:1891 [ref. 24739], Sazonov & Williams 2001:S7 [ref. 26712], Carter & Hartel 2003:877 [ref. 27000]). Current status: Valid as Bathylaco Goode & Bean, 1896. Alepocephalidae. (Macromastax) [ref. 5873]. Fem. Macromastax gymnos Beebe, 1933. Type by monotypy. Also as Beebe 1933 (Aug.):80 [ref. 245]. •Synonym of Bathylaco Goode & Bean, 1896 -- (Nielsen & Larsen 1968:221 [ref. 7907], Nielsen 1973:85 [ref. 6885]). Current status: Synonym of Bathylaco Goode & Bean, 1896. Alepocephalidae.

Species Bathylaco macrophthalmus Nielsen & Larsen, 1968 - Gulf slickhead (author) [=Bathylaco macrophthalmus Nielsen [J. G.] & Larsen [V.], 1968:231, Pl. 15 (fig. 2)] Notes: [Galathea Report v. 9; ref. 7907] Gulf of Panama, 9°23'N, 89°32'W, depth 3570 meters. Current status: Valid as Bathylaco macrophthalmus Nielsen & Larsen, 1968. Alepocephalidae. Distribution: Eastern Pacific. Habitat: marine.

Species Bathylaco nielseni Sazonov & Ivanov, 1980 - Nielsen's slickhead (author) [=Bathylaco nielseni Sazonov [Yu. I.] & Ivanov [A. N.], 1980:15, Fig. 4] Notes: [Trudy Instituta Okeanologii Imeni P.P. Shirshova v. 110; ref. 8282] Indian Ocean, 12°45'S, 61°11'E, depth 1500 meters. Current status: Valid as Bathylaco nielseni Sazonov & Ivanov, 1980. Alepocephalidae. Distribution: Cosmopolitan. Habitat: marine.

Species Bathylaco nigricans Goode & Bean, 1896 - black warrior [=Bathylaco nigricans Goode [G. B.] & Bean [T. H.], 1896:57, Pl. 18 (fig. 69), Macromastax gymnos Beebe [W.], 1933:162, Fig. 40] Notes: [Special Bulletin U. S. National Museum No. 2; ref. 1848] Off Santa Cruz, Gulf of Mexico, 17°56.9'N, 64°54.3'W, Blake station 121, depth 2393 fathoms. Current status: Valid as Bathylaco nigricans Goode & Bean, 1896. Alepocephalidae. Distribution: Circumglobal in warm to temperate waters. Habitat: marine. (gymnos) [Zoologica v. 13 (no. 8); ref. 5873] 8 miles south of Nonsuch Island, Bermuda, depth 1000 fathoms. Current status: Synonym of Bathylaco nigricans Goode & Bean, 1896. Alepocephalidae. Habitat: marine.

GENUS Bathyprion Marshall, 1966 - smooth-heads [=Bathyprion Marshall [N. B.], 1966:4] Notes: [ref. 2894]. Masc. Bathyprion danae Marshall, 1966. Type by original designation (also monotypic). Sometimes placed in its own family or subfamily. •Valid as Bathyprion Marshall, 1966 -- (Krefft 1973:94 [ref. 7166], Markle & Quéro in Whitehead et al. 1984:235 [ref. 13675], Anderson et al. 1986:798 [ref. 5164], Markle 1986:220 [ref. 5687], Sazonov & Markle 1999:1891 [ref. 24739], Sazonov & Williams 2001:S13 [ref. 26712], Carter & Hartel 2003:877 [ref. 27000]). Current status: Valid as Bathyprion Marshall, 1966. Alepocephalidae.

Species Bathyprion danae Marshall, 1966 - fangtooth smooth-head [=Bathyprion danae Marshall [N. B.], 1966:4, Fig. 1] Notes: [Dana Report No. 68; ref. 2894] Australia, 33°26'S, 157°02'E, depth 2500 meters. Current status: Valid as Bathyprion danae Marshall, 1966. Alepocephalidae. Distribution: Atlantic and Pacific. Habitat: marine.

GENUS Conocara Goode & Bean, 1896 - slickheads [=Conocara Goode [G. B.] & Bean [T. H.], 1896:39, Benthosphyraena Cockerell [T. D. A.], 1919:172, Ericara Gill [T. N.] & Townsend [C. H.], 1897:232, Whitleyidea (subgenus of Alepocephalus) Fowler [H. W.], 1934:247, Xenognathus Gilbert [C. H.], 1915:311] Notes: [ref. 1848]. Neut. Conocara mcdonaldi Goode & Bean, 1896. Type by subsequent designation. Type designated by Jordan 1920:467 [ref. 4905]. Species misspelled macdonaldi by authors. •Valid as Conocara Goode & Bean, 1896 -- (Krefft 1973:88 [ref. 7166], Markle & Quéro in Whitehead et al. 1984:238 [ref. 13675], Markle 1986:220 [ref. 5687], Sazonov 1997:785 [ref. 23745], Sazonov & Markle 1999:1892 [ref. 24739], Sazonov 2002:271 [ref. 26009], Mecklenburg et al. 2002:165 [ref. 25968], Carter & Hartel 2003:876 [ref. 27000], Hoese et al. 2006:388 [ref. 29035], Sazonov et al. 2009:853 [ref. 30625]). Current status: Valid as Conocara Goode & Bean, 1896. Alepocephalidae. (Benthosphyraena) [ref. 872]. Fem. Alepocephalus macropterus Vaillant, 1888. Type by monotypy. Perhaps not intended as a new genus but unclear from text; original description consists only of: "Benthosphyraena macroptera also referred to the Alepocephalidae, has small round scales wholly unlike those of Alepocephalus." •Synonym of Conocara Goode & Bean, 1896 based on placement of type species -- (Sazanov 1990:225 [ref. 14215]). Current status: Synonym of Conocara Goode & Bean, 1896. Alepocephalidae. (Ericara) [ref. 1749]. Neut. Ericara salmonea Gill & Townsend, 1897. Type by monotypy. •Valid as Ericara Gill & Townsend, 1897 -- (Paxton et al. 1989:210 [ref. 12442]). •Synonym of Conocara Goode & Bean, 1896 -- (Sazonov et al. 2009:852 [ref. 30625]). Current status: Synonym of Conocara Goode & Bean, 1896. Alepocephalidae. (Whitleyidea) [ref. 1416]. Fem. Alepocephalus niger Günther, 1878. Type by original designation (also monotypic). •Synonym of Conocara Goode & Bean, 1896 based on placement of the type species salmoneum by recent authors. Current status: Synonym of Conocara Goode & Bean, 1896. Alepocephalidae. (Xenognathus) [ref. 1632]. Masc. Xenognathus profundorum Gilbert, 1915. Type by original designation (also monotypic). •Synonym of Conocara Goode & Bean, 1896. Current status: Synonym of Conocara Goode & Bean, 1896. Alepocephalidae.

Species Conocara bertelseni Sazonov, 2002 - Bertelsen's slickhead (author) [=Conocara bertelseni Sazonov [Yu. I.], 2002:271, Fig.] Notes: [Voprosy Ikhtiologii v. 42 (no. 2); ref. 26009] Arabian Sea, 12°43'N, 52°44'E, depth 2380-2300 meters. Current status: Valid as Conocara bertelseni Sazonov, 2002. Alepocephalidae. Distribution: Arabia Sea. Habitat: marine.

Species Conocara fiolenti Sazonov & Ivanov, 1979 - Fiolent's smooth-head [=Conocara fiolenti Sazonov [Yu. I.] & Ivanov [A. N.], 1979:1011, Fig. 5] Notes: [Voprosy Ikhtiologii v. 19 (no. 6); ref. 8668] Southeastern Indian Ocean, 11°25'S, 88°54.7'E [or 88°51.7'E], depth 1600 meters. Current status: Valid as Conocara fiolenti Sazonov & Ivanov, 1979. Alepocephalidae. Distribution: Cosmopolitan. Habitat: marine.

Species Conocara kreffti Sazonov, 1997 - wrinkled slickhead [=Conocara kreffti Sazonov [Yu. I.], 1997:785 [749], Fig.] Notes: [Voprosy Ikhtiologii v. 37 (no. 6); ref. 23745] Southeastern Indian Ocean, East-Indian Ridge, 28°13.6'S, 98°28.6'E, depth 1150 meters. Current status: Valid as Conocara kreffti Sazonov, 1997. Alepocephalidae. Distribution: Indo-West Pacific. Habitat: marine.

Species Conocara macropterum (Vaillant, 1888) - longfin slickhead [=Alepocephalus macropterus Vaillant [L. L.], 1888:150, Pl. 11 (figs. 2, 2a-2c), Conocara mcdonaldi Goode [G. B.] & Bean [T. H.], 1896:39, Pl. 13 (fig. 48)] Notes: [Expéditions scientifiques du "Travailleur" et du "Talisman"; ref. 4496] Off Morocco, Soudan, Banc d'Arguin, depth 863-2115 meters. Current status: Valid as Conocara macropterum (Vaillant, 1888). Alepocephalidae. Distribution: Atlantic. Habitat: marine. (mcdonaldi) [Special Bulletin U. S. National Museum No. 2; ref. 1848] Gulf of Mexico, 24°36'N, 84°05'W, depth 955 fathoms; 24°43'N, 83°25'W, Albatross station 2392. Current status: Synonym of Conocara macropterum (Vaillant, 1888). Alepocephalidae. Habitat: marine.

Species Conocara microlepis (Lloyd, 1909) - elongate smooth-head [=Alepocephalus microlepis Lloyd [R. E.], 1909:146] Notes: [Memoirs of the Indian Museum v. 2 (no. 3); ref. 2814] Arabian Sea, depth 700-600 fathoms. Current status: Valid as Conocara microlepis (Lloyd, 1909). Alepocephalidae. Distribution: Atlantic and Indo-West Pacific. Habitat: marine. Species Conocara murrayi (Koefoed, 1927) - Murray's smooth-head [=Alepocephalus murrayi Koefoed [E.], 1927:41, Pl. 3 (fig. 6)] Notes: [Scientific Results of the Michael Sars North Atlantic Deep-Sea Expedition 1910 v. 4 (pt 1); ref. 2650] North Atlantic, 35°46'N, 8°16'W, station 25, 2055 m; 27°27'N, 14°52'W, station 35, depth 2603 meters. Current status: Valid as Conocara murrayi (Koefoed, 1927). Alepocephalidae. Distribution: Atlantic and Indian Ocean; one specimen from the southwestern Pacific off Australia. Habitat: marine.

Species Conocara nigrum (Gunther, 1878) - flathead slickhead [=Conocara niger Günther [A.], 1878:248 [21]] Notes: [Annals and Magazine of Natural History (Series 5) v. 2 (nos 7/8/9)(art. 2/22/28); ref. 2010] North of Australia, Challenger station 184, 12°08'S, 145°10'E, depth 1400 fathoms. Current status: Valid as Conocara nigrum (Günther, 1878). Alepocephalidae. Distribution: Coral Sea north of Australia. Habitat: marine.

Species Conocara paxtoni Sazonov et al., 2009 - Paxton's slickhead (author) [=Conocara paxtoni Sazonov [Yu. I.], Williams [A.] & Kobyliansky [S. G.], 2009:858, Fig. 2] Notes: [Journal of Ichthyology v. 49 (no. 10); ref. 30625] Continental Slope of Australia, Tasman Sea, 29°42'S, 159°48'E, depth 2450 meters. Current status: Valid as Conocara paxtoni Sazonov, Williams & Kobyliansky, 2009. Alepocephalidae. Distribution: Tasman Sea. Habitat: marine.

Species Conocara salmoneum (Gill & Townsend, 1897) - salmon smooth-head [=Ericara salmonea Gill [T. N.] & Townsend [C. H.], 1897:232, Xenognathus profundorum Gilbert [C. H.], 1915:311, Pl. 14 (fig. 2)] Notes: [Proceedings of the Biological Society of Washington v. 11; ref. 1749] Bering Sea, southwest of Pribilof Islands, Albatross station 3603, depth 1771 fathoms. Current status: Valid as Conocara salmoneum (Gill & Townsend, 1897). Alepocephalidae. Distribution: Atlantic and eastern Pacific. Habitat: marine. (profundorum) [Proceedings of the United States National Museum v. 48 (no. 2075); ref. 1632] Off Santa Catalina Island, California, U.S.A., 33°02'15"N, 120°42'W, Albatross station 4390, depth 1350-2182 fathoms. Current status: Synonym of Conocara salmoneum (Gill & Townsend, 1897). Alepocephalidae. Habitat: marine.

Species Conocara werneri Nybelin, 1947 - Werner's smooth-head [=Conocara werneri Nybelin [O.], 1947:1, Fig. 1] Notes: [Arkiv för Zoologi v. 38 B (no. 2); ref. 3233] Tropical eastern Atlantic, off Morocco, 35°43'N, 8°16'W, depth 2150-2300 meters. Current status: Valid as Conocara werneri Nybelin, 1947. Alepocephalidae. Distribution: Eastern Atlantic. Habitat: marine.

GENUS Einara Parr, 1951 - smooth-heads [=Einara Parr [A. E.], 1951:10, Torictus Parr [A. E.], 1951:10] Notes: [ref. 3380]. Fem. Alepocephalus macrolepis Koefoed, 1927. Type by original designation (also monotypic). •Valid as Einaria Parr, 1951 -- (Krefft 1973:89 [ref. 7166], Markle & Quéro in Whitehead et al. 1984:242 [ref. 13675], Markle 1986:220 [ref. 5687], Sazonov & Markle 1999:1892 [ref. 24739], Carter & Hartel 2003:876 [ref. 27000], Hoese et al. 2006:388 [ref. 29035]). Current status: Valid as Einara Parr, 1951. Alepocephalidae. (Torictus) [ref. 3380]. Masc. Alepocephalus edentulus Alcock, 1892. Type by original designation (also monotypic). •Valid as Torictus Parr, 1951 -- (Krefft 1973:92 [ref. 7166]). •Synonym of Einara Parr, 1951 -- (Markle & Quéro in Whitehead et al. 1984:242 [ref. 13675]). Current status: Synonym of Einara Parr, 1951. Alepocephalidae.

Species Einara edentula (Alcock, 1892) - toothless smooth-head [=Alepocephalus edentulus Alcock [A. W.], 1892:358, Pl. 18 (fig. 2), Alepocephalus edentulus atlanticus Roule [L.] & Angel [F.], 1931:5] Notes: [Annals and Magazine of Natural History (Series 6) v. 10 (no. 59); ref. 88] Bay of Bengal, l2°50'N, 8l°30'E, Investigator station 132, depth 475 fathoms. Current status: Valid as Einara edentula (Alcock, 1892). Alepocephalidae. Distribution: Cosmopolitan, except Polar waters. Habitat: marine. (atlanticus) [Bulletin de l'Institut Océanographique (Monaco) No. 581; ref. 3825] North Atlantic between Madeira and southern coast of Morocco, station 3090, depth 0-4000 meters. Current status: Synonym of Einara edentula (Alcock, 1892). Alepocephalidae. Habitat: marine.

Species Einara macrolepis (Koefoed, 1927) - loosescale smooth-head [=Alepocephalus macrolepis Koefoed [E.], 1927:44, Pl. 3 (fig. 8)] Notes: [Scientific Results of the Michael Sars North Atlantic Deep-Sea Expedition 1910 v. 4 (pt 1); ref. 2650] North Atlantic, 28°54'N, 24°14'W, station 48, depth about 4000 meters (7550 meters of wire out). Current status: Valid as Einara macrolepis (Koefoed, 1927). Alepocephalidae. Distribution: Cosmopolitan. Habitat: marine.

GENUS Herwigia Nielsen, 1972 - smooth-heads [=Herwigia Nielsen [J. G.], 1972:30] Notes: [ref. 3197]. Fem. Bathylaco kreffti Nielsen & Larsen, 1970. Type by original designation (also monotypic). •Valid as Herwigia Nielsen, 1972 -- (Iwamoto et al. 1976 [ref. 7089], Markle & Quéro in Whitehead et al. 1984:243 [ref. 13675], Markle 1986:220 [ref. 5687], Paxton et al. 1989:210 [ref. 12442], Sazonov & Markle 1999:1890 [ref. 24739], Sazonov & Williams 2001:S9 [ref. 26712], Carter & Hartel 2003:877 [ref. 27000], Hoese et al. 2006:383 [ref. 28999]). Current status: Valid as Herwigia Nielsen, 1972. Alepocephalidae.

Species Herwigia kreffti (Nielsen & Larsen, 1970) - Krefft's smooth-head [=Bathylaco kreffti Nielsen [J. G.] & Larsen [V.] 1970:35, Fig. 5] Notes: [Archiv für Fischereiwissenschaft v. 21 (no. 1); ref. 7769] Off Uruguay, southwestern Atlantic Ocean, 34°01'S, 47°39'W, depth about 2000 meters. Current status: Valid as Herwigia kreffti (Nielsen & Larsen, 1970). Alepocephalidae. Distribution: Cosmopolitan, including Hawaiian Islands, but not in eastern Pacific. Habitat: marine.

GENUS Leptoderma Vaillant, 1886 - slickheads [=Leptoderma Vaillant [L. L.], 1886:1239] Notes: [ref. 4494]. Neut. Leptoderma macrops Vaillant, 1886. Type by monotypy. •Valid as Leptoderma Vaillant, 1886 -- (Krefft 1973:91 [ref. 7166], Markle & Quéro in Whitehead et al. 1984:244 [ref. 13675], Machida in Masuda et al. 1984:43 [ref. 6441], Markle 1986:221 [ref. 5687], Sazonov & Markle 1990:112 [ref. 21681], Sazonov & Markle 1999:1889 [ref. 24739], Carter & Hartel 2003:875 [ref. 27000], Hoese et al. 2006:389 [ref. 29035], Williams & Sazonov 2008:203 [ref. 30623], Byrkjedal et al. 2011:49 [ref. 31301]). Current status: Valid as Leptoderma Vaillant, 1886. Alepocephalidae.

Species Leptoderma affinis Alcock, 1899 - eel slickhead [=Leptoderma affinis Alcock [A. W.], 1899:182] Notes: [A descriptive catalogue of the Indian deep-sea fishes in the Indian Museum; ref. 5114] Bay of Bengal, off Kistna coast, depth 753 fathoms. Current status: Valid as Leptoderma affinis Alcock, 1899. Alepocephalidae. Distribution: Indo-West Pacific. Habitat: marine.

Species Leptoderma lubricum Abe et al., 1965 - Suruga slickhead (author) [=Leptoderma lubricum Abe [T.], Marumo [R.] & Kawaguchi [K.], 1965:69, Figs. 1-4] Notes: [Japanese Journal of Ichthyology v. 13 (nos 1-3); ref. 9191] Suruga Bay, Japan, 34°52'N, 138°48'E, depth 0-1300 meters. Current status: Valid as Leptoderma lubricum Abe, Marumo & Kawaguchi, 1965. Alepocephalidae. Distribution: Western Pacific. Habitat: marine.

Species Leptoderma macrophthalmum Byrkjedal et al., 2011 - bighead slickhead (author) [=Leptoderma macrophthalmum Byrkjedal [I.], Poulsen [J. Y.] & Galbraith [J.], 2011:51, Figs. 2-3] Notes: [Zootaxa No. 2876; ref. 31301] North Atlantic, Mid Atlantic Ridge, 42°47'N, 29°38'W, depth 2107-2063 meters. Current status: Valid as Leptoderma macrophthalmum Byrkjedal, Poulsen & Galbraith, 2011. Alepocephalidae. Distribution: Mid Atlantic Ridge, North Atlantic (from holotype). Habitat: marine.

Species Leptoderma macrops Vaillant, 1886 - Grenadier smooth-head [=Leptoderma macrops Vaillant [L. L.], 1886:1239, Leptoderma springeri Mead [G. W.] & Böhlke [J. E.], 1953:265] Notes: [Comptes Rendus Hebdomadaires des séances de l'Académie des sciences v. 103; ref. 4494] Off Morocco, eastern Atlantic. Current status: Valid as Leptoderma macrops Vaillant, 1886. Alepocephalidae. Distribution: Atlantic. Habitat: marine. (springeri) [Texas Journal of Science v. 5 (no. 2); ref. 12705] Gulf of Mexico off the state of Mississippi, 29°01'N, 88°24'W, Oregon station 640, depth 355-475 fathoms. Current status: Synonym of Leptoderma macrops Vaillant, 1886. Alepocephalidae. Habitat: marine.

Species Leptoderma ospesca Angulo et al., 2016 - El Salvador smooth-head (author) [=Leptoderma ospesca Angulo [A.], Baldwin [C. C.] & Robertson [D. R.], 2016:494, Fig. 1] Notes: [Zootaxa 4066 (no. 4); ref. 34156] Eastern Pacific Ocean, El Salvador, 12°53'15.72"N, 90°09'30.6"W to 12°53'22.9194"N,

90°07'56.28"W, depth 1368-1406 meters. Current status: Valid as Leptoderma ospesca Angulo, Baldwin & Robertson, 2016. Alepocephalidae. Distribution: El Salvador, eastern Pacific Ocean. Habitat: marine. Species Leptoderma retropinna Fowler, 1943 - Philippines slickhead (author) [=Leptoderma retropinna Fowler [H. W.], 1943:55, Fig. 5] Notes: [Bulletin of the United States National Museum No. 100, v. 14 (pt 2); ref. 1441] Off Diuata Point, between Leyte and Mindanao, Philippines, 9°06'30"N, 125°00'20"E, Albatross station D5495, depth 976 fathoms. Current status: Valid as Leptoderma retropinna Fowler, 1943. Alepocephalidae. Distribution: Indo-West Pacific. Habitat: marine.

GENUS Mirognathus Parr, 1951 - smooth-heads [=Mirognathus Parr [A. E.], 1951:4, 10] Notes: [ref. 3380]. Masc. Mirognathus normani Parr, 1951. Type by original designation (also monotypic). Species spelled normanii on p. 4, normani on p. 10. •Valid as Mirognathus Parr, 1951 -- (Markle & Quéro in Whitehead et al. 1984:245 [ref. 13675], Markle 1986:221 [ref. 5687], Sazonov & Markle 1999:1889 [ref. 24739], Sazonov & Last 2000:385 [ref. 25443], Sazonov & Williams 2001:S15 [ref. 26712], Carter & Hartel 2003:876 [ref. 27000], Hoese et al. 2006:389 [ref. 29035]). Current status: Valid as Mirognathus Parr, 1951. Alepocephalidae.

Species Mirognathus normani Parr, 1951 - Norman's smooth-head [=Mirognathus normani Parr [A. E.], 1951:(4) 10] Notes: [American Museum Novitates No. 1531; ref. 3380] South Atlantic, 48°26'S, 22°10'W, depth 1500-1600 meters. Current status: Valid as Mirognathus normani Parr, 1951. Alepocephalidae. Distribution: Atlantic and western South Pacific. Habitat: marine.

GENUS Microphotolepis Sazonov & Parin, 1977 - smooth-heads [=Microphotolepis Sazonov [Yu. I.] & Parin [N. V.], 1977:49] Notes: [ref. 3907]. Fem. Microphotolepis multipunctata Sazonov & Parin, 1977. Type by original designation (also monotypic). •Valid as Microphotolepis Sazonov & Parin 1977 -- (Sazonov & Markle 1999:1892 [ref. 24739], Sazonov & Williams 2001:S16 [ref. 26712]). Current status: Valid as Microphotolepis Sazonov & Parin, 1977. Alepocephalidae.

Species Microphotolepis schmidti (Angel & Verrier, 1931) - Schmidt's smooth-head (author) [=Aleposomus schmidti Angel [F.] & Verrier [M. L.], 1931:121, Fig. 1, Microphotolepis multipunctata Sazonov [Yu. I.] & Parin [N. V.], 1977:50, fig'd] Notes: [Annales de l'Institut Oceanographique Monaco (New Series) v. 10 (no. 5); ref. 15919] North of New Guinea Current status: Valid as Microphotolepis schmidti (Angel & Verrier, 1931). Alepocephalidae. Distribution: Indo-West Pacific. Habitat: marine. (multipunctata) [Trudy Instituta Okeanologii Imeni P.P. Shirshova v. 107; ref. 3907] Western Pacific, 5°35'N, 130°47'E, depth 0-200 meters. Current status: Synonym of Microphotolepis schmidti (Angel & Verrier, 1931). Alepocephalidae. Habitat: marine.

GENUS Narcetes Alcock, 1890 - slickheads [=Narcetes Alcock [A. W.], 1890:305, Bellocia Parr [A. E.], 1951:6, 12] Notes: [ref. 83]. Masc. Narcetes erimelas Alcock, 1890. Type by monotypy. •Valid as Narcetes Alcock, 1890 -- (Krefft 1973:91 [ref. 7166], Markle & Quéro in Whitehead et al. 1984:246 [ref. 13675], Okamura in Masuda et al. 1984:43 [ref. 6441], Markle 1986:221 [ref. 5687], Sazonov & Markle 1990:113 [ref. 21681], Sazonov 1998:448 [ref. 24862], Sazonov & Markle 1999:1891 [ref. 24739], Sazonov 1999:734 [ref. 24845], Sazonov & Williams 2001:S29 [ref. 26712], Carter & Hartel 2003:877 [ref. 27000], Hoese et al. 2006:390 [ref. 29035]). Current status: Valid as Narcetes Alcock, 1890. Alepocephalidae. (Bellocia) [ref. 3380]. Fem. Bellocia vaillanti Parr, 1951. Type by original designation (also monotypic). •Valid as Bellocia Parr, 1951 -- (Krefft 1973:88 [ref. 7166], Markle & Quéro in Whitehead et al. 1984:237 [ref. 13675], Sazonov & Markle 1999:1891 [ref. 24739]). •Synonym of Narcetes Alcock, 1890 -- (Sazanov 1999:734 [ref. 24845], Sazonov & Williams 2001:S31 [ref. 26712]). Current status: Synonym of Narcetes Alcock, 1890. Alepocephalidae.

Species Narcetes stomias (Gilbert, 1890) - blackhead salmon [=Bathytroctes stomias Gilbert [C. H.], 1890:53, Narcetes affinis Lloyd [R. E.], 1906:308, Narcetes pluriserialis Garman [S.], 1899:289, Pl. 57 (fig. 3)] Notes: [Proceedings of the United States National Museum v. 13 (no. 797); ref. 1623] 47°22'N, 125°48'30"W, off northwestern U.S.A., Albatross station 3074, depth 877 fathoms. Current status: Valid as Narcetes stomias (Gilbert, 1890). Alepocephalidae. Distribution: Circumglobal. Habitat: marine. (affinis) [Annals and Magazine of Natural History (Series 7) v. 18 (no. 106); ref. 15662] Gulf of Oman, 24°35'10"N, 57°46'06"E, Investigator station 354, depth 1005 fathoms. Current status: Synonym of Narcetes stomias (Gilbert, 1890). Alepocephalidae. Habitat: marine. (pluriserialis) [Memoirs of the Museum of Comparative Zoology v. 24; ref. 1540] Cocos Island, eastern Pacific, 5°31'N, 86°31'W, Albatross station 3365, depth 1010 fathoms. Current status: Synonym of Narcetes stomias (Gilbert, 1890). Alepocephalidae. Habitat: marine.

Species Narcetes erimelas Alcock, 1890 - Goa slickhead (author) [=Narcetes erimelas Alcock [A. W.], 1890:305, Bathytroctes alveatus Garman [S.], 1899:287, Pl. 58 (fig. 1), Bellocia vaillanti Parr [A. E.], 1951:12] Notes: [Annals and Magazine of Natural History (Series 6) v. 6 (no. 34); ref. 83] About 75 miles west of Goa coast, Laccadive Sea, 15°02'N, 72°34'E, Investigator station 105, depth 740 fathoms. Current status: Valid as Narcetes erimelas Alcock, 1890. Alepocephalidae. Distribution: Cosmopolitan. Habitat: marine. (alveatus) [Memoirs of the Museum of Comparative Zoology v. 24; ref. 1540] Malpelo Island, eastern Pacific, 3°09'N, 82°08'W, Albatross station 3376, depth 1132 fathoms. Current status: Synonym of Narcetes erimelas Alcock, 1890. Alepocephalidae. Habitat: marine. (vaillanti) [American Museum Novitates No. 1531; ref. 3380] Off Morocco, depth 2600 meters. Current status: Synonym of Narcetes erimelas Alcock, 1890. Alepocephalidae. Habitat: marine. Species Narcetes kamoharai Okamura, in Okamura & Kitajima, 1984 - Okinawa slickhead (author) [=Narcetes kamoharai Okamura [O.], in Okamura & Kitajima, 1984:133, Pl. 83] Notes: [Fishes of the Okinawa Trough and the adjacent waters v. 1; ref. 8057] Okinawa Trough, 29°47.1'N, 128°26.8'E, depth 1000 meters. Current status: Valid as Narcetes kamoharai Okamura, 1984. Alepocephalidae. Distribution: Western North Pacific. Habitat: marine.

Species Narcetes lloydi Fowler, 1934 - Lloyd's slickhead [=Narcetes lloydi Fowler [H. W.], 1934:253, Fig. 16] Notes: [Proceedings of the Academy of Natural Sciences of Philadelphia v. 85 (for 1933); ref. 1416] East coast of Luzon Island, Philippines, Albatross station 5460, 13°32'30"N, 123°58'06"E, depth 565 fathoms. Current status: Valid as Narcetes lloydi Fowler, 1934. Alepocephalidae. Distribution: Indo-West Pacific. Habitat: marine.

Species Narcetes wonderi Herre, 1935 - Wonder's slickhead (author) [=Narcetes wonderi Herre [A. W. C. T.], 1935:126] Notes: [Copeia 1935 (no. 3); ref. 2111] Sagami Sea, Japan. Current status: Valid as Narcetes wonderi Herre, 1935. Alepocephalidae. Distribution: Western North Pacific. Habitat: marine.

GENUS Photostylus Beebe, 1933 - smooth-heads [=Photostylus Beebe [W.], 1933:163] Notes: [ref. 5873]. Masc. Photostylus pycnopterus Beebe, 1933. Type by monotypy. Also in Beebe (Aug.) 1933:82 [ref. 245]. •Valid as Photostylus Beebe, 1933 -- (Wisner 1976 [ref. 6956], Markle & Quéro in Whitehead et al. 1984:247 [ref. 13675], Markle 1986:221 [ref. 5687], Paxton et al. 1989:210 [ref. 12442], Tsukamoto et al. 1992 [ref. 20260], Sazonov & Markle 1999:1890 [ref. 24739], Sazonov & Williams 2001:S15 [ref. 26712], Carter & Hartel 2003:875 [ref. 27000], Hoese et al. 2006:390 [ref. 29035]). Current status: Valid as Photostylus Beebe, 1933. Alepocephalidae.

Species Photostylus pycnopterus Beebe, 1933 - starry smooth-head [=Photostylus pycnopterus Beebe [W.], 1933:163, Fig. 41] Notes: [Zoologica v. 13 (no. 8); ref. 5873] 9 miles southeast of Nonsuch Island, Bermuda, depth 0-800 fathoms. Current status: Valid as Photostylus pycnopterus Beebe, 1933. Alepocephalidae. Distribution: Circumglobal (including Hawaiian Islands), except not in Polar waters. Habitat: marine.

GENUS Rinoctes Parr, 1952 - smooth-heads [=Rinoctes Parr [A. E.], 1952:263] Notes: [ref. 3381]. Masc. Bathytroctes nasutus Koefoed, 1927. Type by original designation (also monotypic). •Valid as Rinoctes Parr, 1952 -- (Markle & Merrett 1980 [ref. 6948], Markle & Quéro in Whitehead et al. 1984:248 [ref. 13675], Anderson et al. 1986:798 [ref. 5164], Markle 1986:221 [ref. 5687], Sazonov & Markle 1999:1889 [ref. 24739], Sazonov & Williams 2001:S30 [ref. 26712], Carter & Hartel 2003:876 [ref. 27000]). Current status: Valid as Rinoctes Parr, 1952. Alepocephalidae.

Species Rinoctes nasutus (Koefoed, 1927) - abyssal smooth-head [=Bathytroctes nasutus Koefoed [E.], 1927:50, Pl. 3 (fig. 10)] Notes: [Scientific Results of the Michael Sars North Atlantic Deep-Sea Expedition 1910 v. 4 (pt 1); ref. 2650] North Atlantic, 34°59'N, 33°01'W, station 53, depth 2865 meters. Current status: Valid as Rinoctes nasutus (Koefoed, 1927). Alepocephalidae. Distribution: Cosmopolitan. Habitat: marine.

GENUS Rouleina Jordan, 1923 - smooth-heads [=Rouleina Jordan [D. S.], 1923:122, Aleposomus Roule [L.] (ex Brauer), 1915:46, Auchenalepoceps (subgenus of Xenodermichthys) Fowler [H. W.], 1943:53, Bathypropteron (subgenus of Rouleina) Fowler [H. W.], 1934:256, Caudania Roule [L.], 1935:2] Notes: [ref. 2421]. Fem. Xenodermichthys guentheri Alcock, 1892. Type by original designation (also monotypic). •Valid as Rouleina Jordan, 1923 -- (Krefft 1973:91 [ref. 7166], Uyeno & Kishida 1977 [ref. 7016], Markle 1978 [ref. 7030], Markle & Quéro in Whitehead et al. 1984:248 [ref. 13675], Machida in Masuda et al. 1984:43 [ref. 6441], Markle 1986:221 [ref. 5687], Paxton et al. 1989:210 [ref. 12442], Sazonov & Markle 1990:113 [ref. 21681], Sazanov 1999:437 [ref. 24874], Sazonov & Markle 1999:1890 [ref. 24739], Sazonov & Williams 2001:S18 [ref. 26712], Mecklenburg et al. 2002:165 [ref. 25968], Carter & Hartel 2003:875 [ref. 27000], Hoese et al. 2006:390 [ref. 29035], Kenaley & Orr 2006:200 [ref. 29240], Williams & Sazonov 2008:204 [ref. 30623]). Current status: Valid as Rouleina Jordan, 1923. Alepocephalidae. (Aleposomus) [ref. 12566]. Masc. Xenodermichthys guentheri Alcock, 1892. Roule retained Gill's name Aleposomus but changed definition to exclude Gill's type species; perhaps can be regarded as a genus on its own, with Roule as author (but preoccupied by Gill's use of name). Type above as given by Norman (MS); subsequent designation not researched. •In the synonymy of Rouleina Jordan, 1923. Current status: Synonym of Rouleina Jordan, 1923. Alepocephalidae. (Auchenalepoceps) [ref. 1441]. Neut. Xenodermichthys funebris Fowler, 1943. Type by original designation. •Synonym of Rouleina Jordan, 1923. Current status: Synonym of Rouleina Jordan, 1923. Alepocephalidae. (Bathypropteron) [ref. 1416]. Neut. Aleposomus nudus Brauer, 1906. Type by original designation. •Synonym of Rouleina Jordan, 1923. Current status: Synonym of Rouleina Jordan, 1923. Alepocephalidae. (Caudania) [ref. 3824]. Fem. Bathytroctes mollis Koehler, 1896. Type by monotypy. •Synonym of Rouleina Jordan, 1923 -- (Krefft 1973:91 [ref. 7166]). Current status: Synonym of Rouleina Jordan, 1923. Alepocephalidae.

Species Rouleina attrita (Vaillant, 1888) - softskin smooth-head [=Bathytroctes attritus Vaillant [L. L.], 1888:158, Pl. 12 (fig. 2, 2a-c), Bathytroctes (Talismania) aequatoris Goode [G. B.] & Bean [T. H.], 1896:44, Pl. 14 (fig. 50), Bathytroctes harperi Fowler [H. W.], 1934:250, Fig. 12, Bathytroctes mollis Köhler [R.], 1896:517, Pl. 26 (fig. 2), Bathytroctes welshi Fowler [H. W.], 1934:249, Fig. 10] Notes: [Expéditions scientifiques du "Travailleur" et du "Talisman"; ref. 4496] Azores, northeastern Atlantic, depth 1442 meters. Current status: Valid as Rouleina attrita (Vaillant, 1888). Alepocephalidae. Distribution: Circumglobal. Habitat: marine. (aequatoris) [Special Bulletin U. S. National Museum No. 2; ref. 1848] Off Ecuador, 1°03'N, 80°l5'W, Albatross station 2793, depth 741 fathoms. Current status: Synonym of Rouleina attrita (Vaillant, 1888). Alepocephalidae. Habitat: marine. (harperi) [Proceedings of the Academy of Natural Sciences of Philadelphia v. 85 (for 1933); ref. 1416] Gulf of Boni, Sulawesi, Indonesia, 3°34'10"S, 120°50'30"E, Albatross station D.5655, depth 608 fathoms. Current status: Synonym of Rouleina attrita (Vaillant, 1888). Alepocephalidae. Habitat: marine. (mollis) [Annales de l'Université de Lyon. Paris [etc.] v. 26; ref. 14612] Biscay Bay, France, station 2, depth 1700 meters. Current status: Synonym of Rouleina attrita (Vaillant, 1888). Alepocephalidae. Habitat: marine. (welshi) [Proceedings of the Academy of Natural Sciences of Philadelphia v. 85 (for 1933); ref. 1416] Butung [Buton], Philippines, 5°35'00"S, 122°20'20"E, Albatross station D.5648, depth 559 fathoms. Current status: Synonym of Rouleina attrita (Vaillant, 1888). Alepocephalidae. Habitat: marine.

Species Rouleina danae Parr, 1951 - Sulu smooth-head (author) [=Rouleina danae Parr [A. E.], 1951:14] Notes: [American Museum Novitates No. 1531; ref. 3380] Sulu Sea, Philippines, 8°34'N, 119°55'E, Dana station 3686, depth 2000 meters. Current status: Valid as Rouleina danae Parr, 1951. Alepocephalidae. Distribution: Indo-Pacific. Habitat: marine.

Species Rouleina eucla Whitley, 1940 - Eucla slickhead [=Rouleina eucla Whitley [G. P.], 1940:407] Notes: [Australian Zoologist v. 9 (pt 4); ref. 4699] Off Eucla, Western Australia. Current status: Valid as Rouleina eucla Whitley, 1940. Alepocephalidae. Distribution: Indo-West Pacific. Habitat: marine. Species Rouleina euryops Sazonov, 1999 - euryops slickhead (author) [=Rouleina euryops Sazonov [Yu. I.], 1999:438 [480], Fig. 1] Notes: [Voprosy Ikhtiologii v. 39 (no. 4); ref. 24874] Sulu Sea, 8°15'N, 123°57'E, depth about 750 meters. Current status: Valid as Rouleina euryops Sazonov, 1999. Alepocephalidae. Distribution: Western Indain Ocean. Habitat: marine.

Species Rouleina guentheri (Alcock, 1892) - bordello slickhead [=Xenodermichthys guentheri Alcock [A. W.], 1892:359, Pl. 18 (fig. 3), Rouleina tanakae Parr [A. E.], 1951:14] Notes: [Annals and Magazine of Natural History (Series 6) v. 10 (no. 59); ref. 88] Bay of Bengal, 15°43'30"N, 81°19'30"E, Investigator station 133, depth 678 fathoms. Current status: Valid as Rouleina guentheri (Alcock, 1892). Alepocephalidae. Distribution: Indo-West Pacific. Habitat: marine. (tanakae) [American Museum Novitates No. 1531; ref. 3380] Okinose, near Misake, Japan. Current status: Synonym of Rouleina guentheri (Alcock, 1892). Alepocephalidae. Habitat: marine.

Species Rouleina livida (Brauer, 1906) - Sumatran smooth-head (author) [=Aleposomus lividus Brauer [A.], 1906:21, Pl. 2 (fig. 1)] Notes: [Die Tiefsee-Fische v. 15; ref. 632] Inland sea of Sumatra, Indonesia; Indian Ocean. Current status: Valid as Rouleina livida (Brauer, 1906). Alepocephalidae. Distribution: Indo-West Pacific. Habitat: marine.

Species Rouleina maderensis Maul, 1948 - Madeiran smooth-head [=Rouleina maderensis Maul [G. E.], 1948:7, Fig. 1] Notes: [Boletim do Museu Municipal do Funchal No. 3 (art. 5); ref. 13063] Off Madeira, eastern Atlantic. Current status: Valid as Rouleina maderensis Maul, 1948. Alepocephalidae. Distribution: Circumglobal, except Polar waters. Habitat: marine.

Species Rouleina nuda (Brauer, 1906) - nuda slickhead (author) [=Aleposomus nudus Brauer [A.], 1906:22, Pl. 2 (fig. 2)] Notes: [Die Tiefsee-Fische v. 15; ref. 632] Off Sumatra, Indonesia, 0°39'02"S, 98°52'03"E, Valdivia station 191, depth 750 meters. Current status: Valid as Rouleina nuda (Brauer, 1906). Alepocephalidae. Distribution: Western Pacific. Habitat: marine.

Species Rouleina squamilatera (Alcock, 1898) - bluntsnout slickhead [=Xenodermichthys squamilaterus Alcock [A. W.], 1898:148, Xenodermichthys funebris Fowler [H. W.], 1943:54, Fig. 4] Notes: [Annals and Magazine of Natural History (Series 7) v. 2 (no. 8) (art. 22); ref. 92] Off Andaman Islands, Andaman Sea, 14°13'N, 93°40'E, Investigator station 235, depth 370-419 fathoms. Current status: Valid as Rouleina squamilatera (Alcock, 1898). Alepocephalidae. Distribution: Indo-West Pacific. Habitat: marine. (funebris) [Bulletin of the United States National Museum No. 100, v. 14 (pt 2); ref. 1441] Off Point Tabonan, Palawan Passage, Philippines, 10°57'45"N, 118°38'15"E, Albatross station D.5348, depth 375 fathoms. Current status: Synonym of Rouleina squamilatera (Alcock, 1898). Alepocephalidae. Habitat: marine.

Species Rouleina watasei (Tanaka, 1909) - Watase slickhead (author) [=Aleposomus watasei Tanaka [S.], 1909:14] Notes: [Journal of the College of Science. Imperial University, Tokyo v. 27 (art. 8); ref. 4322] Off Okinose, Sagami Bay, Japan, depth 700 fathoms. Current status: Valid as Rouleina watasei (Tanaka, 1909). Alepocephalidae. Distribution: Western North Pacific. Habitat: marine.

GENUS Talismania Goode & Bean, 1896 - smooth-heads [=Talismania (subgenus of Bathytroctes) Goode [G. B.] & Bean [T. H.], 1896:41, 43, Binghamia Parr [A. E.], 1937:7, 22, Binghamichthys Whitley [G. P.], 1941:4, Nemabathytroctes (subgenus of Bathytroctes) Fowler [H. W.], 1934:252] Notes: [ref. 1848]. Fem. Bathytroctes homopterus Vaillant, 1888. Type by subsequent designation. Type designated by Jordan 1920:467 [ref. 4905]. •Valid as Talismania Goode & Bean, 1896 -- (Markle & Quéro in Whitehead et al. 1984:250 [ref. 13675], Okamura in Masuda et al. 1984:43 [ref. 6441], Markle 1986:222 [ref. 5687], Paxton et al. 1989:211 [ref. 12442], Gomon et al. 1994:244 [ref. 22532], Sazonov & Markle 1999:1891 [ref. 24739], Carter & Hartel 2003:877 [ref. 27000], Hoese et al. 2006:392 [ref. 29035], Williams & Sazonov 2008:206 [ref. 30623]). Current status: Valid as Talismania Goode & Bean, 1896. Alepocephalidae. (Binghamia) [ref. 3376]. Fem. Binghamia microphos Parr, 1937. Type by monotypy, second species doubtfully included. Objectively invalid; preoccupied by Binghamia Tutt, 1908 in Lepidoptera, replaced by Binghamichthys Whitley, 1941. •Synonym of Talismania Goode & Bean, 1896. Current status: Synonym of Talismania Goode & Bean, 1896. Alepocephalidae. (Binghamichthys) [ref. 4701]. Masc. Binghamia microphos Parr 1937. Type by being a replacement name. Replacement for Binghamia Parr, 1937, preoccupied by Binghamia Tutt, 1908 in Lepidoptera. •Synonym of Talismania Goode & Bean, 1896. Current status: Synonym of Talismania Goode & Bean, 1896. Alepocephalidae. (Nemabathytroctes) [ref. 1416]. Masc. Bathytroctes longifilis Brauer, 1902. Type by original designation (also monotypic). •Valid as Nemabathytroctes Fowler, 1934 -- (Parr 1951:4 [ref. 3380]). •Synonym of Talismania Goode & Bean, 1896 -- (authors). Current status: Synonym of Talismania Goode & Bean, 1896. Alepocephalidae.

Species Talismania antillarum (Goode & Bean, 1896) - Antillean smooth-head [=Bathytroctes (Talismania) antillarum Goode [G. B.] & Bean [T. H.], 1896:44, Pl. 14 (fig. 49), Binghamia microphos Parr [A. E.], 1937:22, Fig. 7] Notes: [Special Bulletin U. S. National Museum No. 2; ref. 1848] Off Florida, Gulf of Mexico, 28°38'30"N, 87°02'W, Albatross station 2099 [or 2394], depth 420 fathoms. Current status: Valid as Talismania antillarum (Goode & Bean, 1896). Alepocephalidae. Distribution: Circumglobal. Habitat: marine. (microphos) [Bulletin of the Bingham Oceanographic Collection Yale University v. 3 (art. 7); ref. 3376] Tongue of the Ocean, Bahamas, 23°37'25"N, 77°15'10"W, 7000 feet wire out. Current status: Synonym of Talismania antillarum (Goode & Bean, 1896). Alepocephalidae. Habitat: marine.

Species Talismania aphos (Bussing, 1965) - Aphos slickhead (author) [=Binghamichthys aphos Bussing [W. A.], 1965:189, Fig. 2] Notes: [Antarctic Research Series v. 5; ref. 9201] Off Valparaíso, Chile, 33°18'S, 72°27'W, depth 1000 fathoms. Current status: Valid as Talismania aphos (Bussing, 1965). Alepocephalidae. Distribution: Chile. Habitat: marine.

Species Talismania bifurcata (Parr, 1951) - threadfin slickhead [=Nemabathytroctes bifurcatus Parr [A. E.], 1951:10] Notes: [American Museum Novitates No. 1531; ref. 3380] Off Panama, eastern Pacific, 7°30'N, 79°19'W, depth 1750 meters. Current status: Valid as Talismania bifurcata (Parr, 1951). Alepocephalidae. Distribution: Eastern and western Pacific. Habitat: marine.

Species Talismania brachycephala Sazonov, 1981 - 短头塔氏鱼 [=Talismania (Talismania) brachycephala Sazonov [Yu. I.], 1981:1120 [151], Fig. (p. 1121) [Fig. 1]] Notes: [Voprosy Ikhtiologii v. 21 (no. 6); ref. 8554] Northwestern Pacific, 28°37'N, 127°10'E, depth 940-955 meters. Current status: Valid as Talismania brachycephala Sazonov, 1981. Alepocephalidae. Distribution: Western North Pacific. Habitat: marine.

Species Talismania bussingi Sazonov, 1989 - Bussing's slickhead (author) [=Talismania bussingi Sazonov [Yu. I.], 1989:356 [84], Fig. 1] Notes: [Voprosy Ikhtiologii v. 29 (no. 3); ref. 17726] Eastern Pacific, Nazca Ridge, 20°45'S, 80°52'W, depth 340-780 meters. Current status: Valid as Talismania bussingi Sazonov, 1989. Alepocephalidae. Distribution: Chile. Habitat: marine.

Species Talismania filamentosa Okamura & Kawanishi, in Okamura & Kitajima, 1984 - filamentosa slickhead (author) [=Talismania filamentosa Okamura [O.] & Kawanishi [I.], in Okamura & Kitajima, 1984:125, Pl. 81] Notes: [Fishes of the Okinawa Trough and the adjacent waters v. 1; ref. 8057] Tosa Bay, Japan, 33°02.1'N, 133°45.0'E, depth 945 meters. Current status: Valid as Talismania filamentosa Okamura & Kawanishi, 1984. Alepocephalidae. Distribution: Western North Pacific. Habitat: marine.

Species Talismania homoptera (Vaillant, 1888) - hairfin smooth-head [=Bathytroctes homopterus Vaillant [L. L.], 1888:153 (386), Pl. 12 (fig. 1), Talismania oregoni Parr [A. E.], 1952:270, Fig. 1] Notes: [Expéditions scientifiques du "Travailleur" et du "Talisman"; ref. 4496] Banc d'Arguin, 22°03'N, 17°33'W, depth 1113 meters. Current status: Valid as Talismania homoptera (Vaillant, 1888). Alepocephalidae. Distribution: Atlantic. Habitat: marine. (oregoni) [Journal of the Washington Academy of Sciences v. 42; ref. 12796] Gulf of Mexico, 29°09'N, 87°58'W, Oregon station 349, depth 470-500 fathoms. Current status: Synonym of Talismania homoptera (Vaillant, 1888). Alepocephalidae. Distribution: Western Atlantic. Habitat: marine.

Species Talismania kotlyari Sazonov & Ivanov, 1980 - Kotlyar's smooth-head (author) [=Talismania kotlyari Sazonov [Yu. I.] & Ivanov [A. N.], 1980:49, Fig. 13d] Notes: [Trudy Instituta Okeanologii Imeni P.P. Shirshova v. 110; ref. 8282] Northeastern Indian Ocean, 3°46'N, 95°E, depth 800-875 meters. Current status: Valid as Talismania kotlyari Sazonov & Ivanov, 1980. Alepocephalidae. Distribution: Indian Ocean. Habitat: marine.

Species Talismania longifilis (Brauer, 1902) - longtail slickhead [=Bathytroctes longifilis Brauer [A.], 1902:277] Notes: [Zoologischer Anzeiger v. 25 (no. 668); ref. 631] Gulf of Aden, 44 kilometers south of Ahwar, Yemen, Western Indian Ocean, 13°02'N, 46°41'E, Valdivia station 271, depth 1469 meters. Current status: Valid as Talismania longifilis (Brauer, 1902). Alepocephalidae. Distribution: Eastern Atlantic and Indo-West Pacific. Habitat: marine.

Species Talismania mekistonema Sulak, 1975 - threadfin smooth-head [=Talismania mekistonema Sulak [K. J.], 1975:88, Figs. 1-4, Talismania grandisquamis Quéro [J.-C.], 1974:440, Fig. 1] Notes: [Bulletin of Marine Science v. 25 (no. 1); ref. 17768] Tongue-of-the-Ocean, R/V Columbus Iselin station 80, Atlantic, 23°53'30" to 23°54'00"N, 77°02'36" to 77°04'30"W. Current status: Valid as Talismania mekistonema Sulak, 1975. Alepocephalidae. Distribution: Atlantic and Indian Ocean. Habitat: marine. (grandisquamis) [Revue des Travaux de l'Institut des Pêches Maritimes v. 38 (no. 4); ref. 7532] Northeastern Atlantic, 26°53'N, 14°15'W. Current status: Synonym of Talismania mekistonema Sulak, 1975. Alepocephalidae. Habitat: marine.

Species Talismania okinawensis Okamura & Kawanishi, in Okamura & Kitajima, 1984 - Okamura's slickhead (author) [=Talismania okinawensis Okamura [O.] & Kawanishi [I.], in Okamura & Kitajima, 1984:129, Pl. 82] Notes: [Fishes of the Okinawa Trough and the adjacent waters v. 1; ref. 8057] Okinawa Trough, 29°47.1'N, 128°26.8'E, depth 1000 meters. Current status: Valid as Talismania okinawensis Okamura & Kawanishi, 1984. Alepocephalidae. Distribution: Western North Pacific. Habitat: marine. GENUS Xenodermichthys Günther, 1878 - smooth-heads [=Xenodermichthys Günther [A.], 1878:250, Aleposomus Gill [T. N.], 1884:433] Notes: [ref. 2010]. Masc. Xenodermichthys nodulosus Günther, 1878. Type by monotypy. •Valid as Xenodermichthys Günther, 1878 – (Krefft 1973:92 [ref. 7166], Markle & Quéro in Whitehead et al. 1984:252 [ref. 13675], Machida in Masuda et al. 1984:43 [ref. 6441], Markle 1986:223 [ref. 5687], Carvalho & Almeida 1988 [ref. 6862], Paxton et al. 1989:211 [ref. 12442], Sazonov & Markle 1999:1890 [ref. 24739], Sazonov & Williams 2001:S27 [ref. 26712], Carter & Hartel 2003:875 [ref. 27000], Hoese et al. 2006:392 [ref. 29035], Williams & Sazonov 2008:206 [ref. 30623]). Current status: Valid as Xenodermichthys Günther, 1878. Alepocephalidae. (Aleposomus) [ref. 1728]. Masc. Aleposomus copei Gill, 1884. Type by monotypy. Roule 1915:46 [ref. 12566] redefined the genus based on Brauer 1906 and excluded Gill's type species; Roule's treatment apparently can qualify as a genus description, but Aleposomus Roule is preoccupied by Gill's use of the name. •Synonym of Xenodermichthys Günther, 1878 -- (Krefft 1973:92 [ref. 7166]). Current status: Synonym of Xenodermichthys Günther, 1878. Alepocephalidae.

Species Xenodermichthys copei (Gill, 1884) - bluntsnout smooth-head [=Aleposomus copei Gill [T. N.], 1884:433, Aleposomus cyaneus Zugmayer [E.], 1914:1, Xenodermichthys socialis Vaillant [L. L.], 1888:162, Pl. 13 (figs. 1, 1a-h)] Notes: [American Naturalist v. 18 (no. 4); ref. 1728] Gulf Stream off South Atlantic states, 37°l2'20"N, 69°39'W, Albatross station 2099, depth 2949 fathoms. Current status: Valid as Xenodermichthys copei (Gill, 1884). Alepocephalidae. Distribution: Atlantic and Indo-West Pacific, except Polar waters. Habitat: marine. (cyaneus) [Bulletin de l'Institut Océanographique (Monaco) No. 288; ref. 4848] Off northern Portugal, station 3312, depth 0-3500 meters. Current status: Synonym of Xenodermichthys copei (Gill, 1884). Alepocephalidae. Habitat: marine. (socialis) [Expéditions scientifiques du "Travailleur" et du "Talisman"; ref. 4496] Coasts of Morocco; Soudan; Banc d'Arguin, northwestern Africa; depth 1717-1350 meters. Current status: Synonym of Xenodermichthys copei (Gill, 1884). Alepocephalidae. Habitat: marine. Species Xenodermichthys nodulosus Gunther, 1878 - nodulosus smooth-head (author) [=Xenodermichthys nodulosus Günther [A.], 1878:250 [23]] Notes: [Annals and Magazine of Natural History (Series 5) v. 2 (nos 7/8/9)(art. 2/22/28); ref. 2010] Off Tokyo, Japan, Challenger station 232, depth 345 fathoms. Current status: Valid as Xenodermichthys nodulosus Günther, 1878. Alepocephalidae. Distribution: Western North Pacific. Habitat: marine