gymnos, Macromastax Beebe [W.] 1933:162, Fig. 40 [Zoologica v. 13 (no. 8); ref. 5873] 8 miles south of Nonsuch Island, Bermuda, depth 1000 fathoms. Holotype (unique): USNM 170960 [ex NYZS 10829]. Type catalog: Mead 1958:133 [ref. 20648]. Also appeared in Beebe 1933:81, Fig. 22 [ref. 245]. •Synonym of Bathylaco nigricans Goode & Bean 1896 -- (Nielsen & Larsen 1968:222 [ref. 7907] with question, Nielsen 1973:85 [ref. 6885], Markle & Quéro in Whitehead et al. 1984:235 [ref. 13675] with question, Markle & Sazonov 1990:251 [ref. 14215]). Current status: Synonym of Bathylaco nigricans Goode & Bean 1896. Alepocephalidae. Habitat: marine.