nigracauda, Ophidion Breder [C. M., Jr.] 1936:44, Fig. 15 [Bulletin of the Bingham Oceanographic Collection Yale University v. 2 (art. 3); ref. 634] Refugio Bay (Angel Island), Gulf of California, Mexico. Holotype (unique): YPM 980. Type catalog: Moore & Boardman 1991:23 [ref. 16741] as nigricauda. •Synonym of Ophidion iris Breder 1936 -- (Robins in Nielsen et al. 1999:41 [ref. 24448]). Current status: Synonym of Ophidion iris Breder 1936. Ophidiidae: Ophidiinae. Habitat: marine.