sinus, Eptatretus Wisner [R. L.] & McMillan [C. B.] 1990:792, Fig. 2c [Fishery Bulletin v. 88 (no. 4); ref. 19195] Gulf of California, Mexico, 25°49'N, 110°44'W, depth 708 meters. Holotype: SIO 68-108. Paratypes: CAS 63202 (15): LACM 44408-1 (14); SIO 68-94 (29), 68-100 (60), 68-108 (31); USNM 296319 (15). Additional material: SIO (8 lots, 185). •Valid as Eptatretus sinus Wisner & McMillan 1990 -- (Fernholm 1998:34 [ref. 23976], Mok et al. 2001:1026 [ref. 25820], Nelson et al. 2004:48 [ref. 27807], Knapp et al. 2011:404 [ref. 37507], Page et al. 2013:48 [ref. 32708], Angulo & Del Moral-Flores 2016:107 [ref. 34472], Page et al. 2023:35 [ref. 40505], Fricke et al. 2024:57 [ref. 41622]). Current status: Valid as Eptatretus sinus Wisner & McMillan 1990. Myxinidae: Eptatretinae. Distribution: Eastern Pacific: central Gulf of California, Baja California, Baja California Sur and Sonora (Mexico) endemic. Habitat: marine.