brunneus, Notophtophis Castro-Aguirre [J. L.] & Suárez de los Cobos [S.] 1983:114, Figs. 1-2 [Anales de la Escuela Nacional de Ciencias Biológicas, México v. 27; ref. 5313] La Condesa beach, Acapulco Bay, Guerrero, Mexico. Holotype (unique): ENCB-IPN 5139. Type catalog: Guzmán 2011:170 [ref. 32186]. •Valid as Echiophis brunneus (Castro-Aguirre & Suárez de los Cobos 1983) -- (Allen & Robertson 1994:52 [ref. 22193], Bussing & López S. 1994:44 [ref. 23101], McCosker & Rosenblatt in Fischer et al. 1995:1334 [ref. 22830] Echiopsis by mistake, McCosker & Randall 2001:3 [ref. 25635], Ruiz-Campos & Castro-Aguirre 2002:24 [ref. 37374], Nelson et al. 2004:62 [ref. 27807], Guzmán 2011:170 [ref. 32186], Page et al. 2013:62 [ref. 32708], Campos-León et al. 2023:2 [ref. 40072], Page et al. 2023:53 [ref. 40505], Siccha-Ramirez et al. 2023:101 [ref. 40816], Fricke et al. 2024:121 [ref. 41622]). Current status: Valid as Echiophis brunneus (Castro-Aguirre & Suárez de los Cobos 1983). Ophichthidae: Ophichthinae. Distribution: Eastern Pacific: Gulf of California (Sonora and Sinaloa, Mexico) south to Guerrero (Mexico); Nicaragua south to northern Peru. Habitat: marine.