williamsi, Symphurus Jordan [D. S.] & Culver [G. B.] in Jordan 1895:506, Pl. 55 [Proceedings of the California Academy of Sciences (Series 2) v. 5; ref. 2394] Near the estuary at Mazatlán, Sinaloa, western Mexico. Holotype: CAS-SU 2943. Paratypes: ?BMNH 1895.5.27.224 (1). Type catalog: Böhlke 1953:143 [ref. 12291]. •Valid as Symphurus williamsi Jordan & Culver 1895 -- (Munroe & Nizinski 1990:994 [ref. 19193], Munroe et al. in Fischer et al. 1995:1059 [ref. 22829], De La Cruz Agüero et al. 1997:116 [ref. 24545], Chirichigno F. & Vélez D. 1998:217 [ref. 24555], Castro-Aguirre et al. 1999:501 [ref. 24550], Evseenko & Shtaut 2000:801 [ref. 25089], Nelson et al. 2004:183 [ref. 27807], Love et al. 2005:178 [ref. 37547], Page et al. 2013:189 [ref. 32708], Jiménez-Prado et al. 2015:392 [ref. 34894], Love et al. 2021:223 [ref. 39279]). Current status: Valid as Symphurus williamsi Jordan & Culver 1895. Cynoglossidae: Symphurinae. Distribution: Eastern Pacific: Pacific coast of Baja California Sur (Mexico) south to northern Peru, including Gulf of California (Mexico). Habitat: brackish, marine.