perplexus, Cottus Gilbert [C. H.] & Evermann [B. W.] 1894:202, Pl. 20 (fig. 1) [Bulletin of the U. S. Fish Commission v. 14 (art. 16) (for 1894); ref. 12377] Shookumchuck River, near Chehalis, Washington, U.S.A. Holotype: USNM 45387. Paratypes: (12) BMNH 1897.1.12.13 (1), 1900.9.29.197 (1); CAS-SU 1324 (17), ?1343 (missing, wrong no.); NMW 11458 (1); USNM 45388 (24). Type catalog: Böhlke 1953:128 [ref. 12291]. •Valid as Cottus perplexus Gilbert & Evermann 1894 -- (Lee et al. 1980:818 [ref. 22416], Page & Burr 1991:253 [ref. 18983], Moyle 2002:354 [ref. 26449], Wydoski & Whitney 2003:212 [ref. 27816], Nelson et al. 2004:119 [ref. 27807], Scharpf 2008:11 [ref. 30399], Page & Burr 2011:481 [ref. 31215], Page et al. 2013:122 [ref. 32708], Goto et al. 2014:[9] [ref. 33456], Moyle & Campbell 2022:510 [ref. 39359]). Current status: Valid as Cottus perplexus Gilbert & Evermann 1894. Cottidae. Distribution: Northwestern U.S.A.: Washington and Oregon. Habitat: freshwater.