dubius, Pseudoxenomystax Breder [C. M., Jr.] 1927:6, Fig. 2 [Bulletin of the Bingham Oceanographic Collection Yale University v. 1 (art. 1); ref. 635] North of Glovers Reef, Belize, depth 484 fathoms. Holotype: YPM 25. Paratypes: YPM 26 (1, c&s). Type catalog: Moore & Boardman 1991:10 [ref. 16741]. •Valid as Rhechias dubia (Breder 1927) -- (Smith 1989:533 [ref. 13285], Smith 1989:752 [ref. 13285], Boschung 1992:38 [ref. 23239], Menezes et al. in Menezes et al. 2003:37 [ref. 27192]). •Valid as Bathycongrus dubius (Breder 1927) -- (McEachran & Fechhelm 1998:297 [ref. 23897], Smith 2003:750 [ref. 26989], Nelson et al. 2004:64 [ref. 27807], Karmovskaya 2009:149 [ref. 30139], Melo et al. 2009:7 [ref. 30460], Karmovskaya 2011:422 [ref. 31456], Page et al. 2013:64 [ref. 32708], Page et al. 2023:56 [ref. 40505], Fricke et al. 2024:131 [ref. 41622]). Current status: Valid as Bathycongrus dubius (Breder 1927). Congridae: Congrinae. Distribution: Western Atlantic: Georgia (U.S.A.) south to Uruguay, including Gulf of Mexico and Caribbean Sea. IUCN (2019): Least Concern. Habitat: marine.