caurinus, Cyprinus (Leuciscus) Richardson [J.] 1836:304 [Fauna Boreali-Americana Part 3; ref. 3731] Columbia River, Fort Vancouver, southern Washington, U.S.A. Syntypes: (4) BMNH 1855.9.19.827-828 (2). Type catalog: Gilbert 1998:57 [ref. 23395]. •Valid as Mylocheilus caurinus (Richardson 1836) -- (Lee et al. 1980:208 [ref. 22416], McAllister 1990:60 [ref. 14674], Page & Burr 1991:70 [ref. 18983], Gilbert 1998:57 [ref. 23395], Scott & Crossman 1998:424 [ref. 24570], Wydoski & Whitney 2003:128 [ref. 27816], Nelson et al. 2004:73 [ref. 27807], Love et al. 2005:27 [ref. 37547], Scharpf 2005:25 [ref. 28940], McPhail 2007:86 [ref. 31199], Page & Burr 2011:162 [ref. 31215], Page et al. 2013:73 [ref. 32708], Love et al. 2021:45 [ref. 39279], Page et al. 2023:73 [ref. 40505]). Current status: Valid as Mylocheilus caurinus (Richardson 1836). Leuciscidae: Pogonichthyinae. Distribution: North America: northwestern U.S.A. and Canada. Habitat: freshwater, brackish.