lewisi, Salar Girard [C. F.] 1856:219 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 8 (no. 5); ref. 18058] Falls of Missouri River, Rocky Mountains, U.S.A. Syntypes: whereabouts unknown. •Synonym of Salmo clarkii (Richardson 1836), but a valid subspecies -- (La Rivers 1994:295 [ref. 23389], Scott & Crossman 1998:183 [ref. 24570] as clarki). •Synonym of Oncorhynchus clarkii (Richardson 1836), but a valid subspecies lewisi (Girard 1856) -- (McAllister 1990:84 [ref. 14674] as clarki, Behnke 1992:73, 77 [ref. 23385] as clarki, Baxter & Stone 1995:168 [ref. 23374] as clarki, Thurow et al. 1997:1095 [ref. 25523] as clarki, Sigler & Sigler 1996:169 [ref. 25943] as clarki, Fuller et al. 1999:244 [ref. 25838] as clarki, Wydoski & Whitney 2003:57 [ref. 27816] as clarki, Scharpf 2006:26 [ref. 30386], McPhail 2007:249 [ref. 31199], Page & Burr 2011:405 [ref. 31215], Penaluna et al. 2016:291 [ref. 34726]). •Valid as Oncorhynchus lewisi (Girard 1856) -- (Page et al. 2023:83 [ref. 40505]). Current status: Valid as Oncorhynchus lewisi (Girard 1856). Salmonidae: Salmoninae. Distribution: North America: upper Columbia / Missouri River basin, centered in eastern and western Rocky Mountain slopes (Canada and western-central U.S.A.). Habitat: freshwater.