lewisi, Thymallus Henshall [J. A.] (ex Lewis) 1898:70 [Forest and Stream. A Weekly Journal of the Rod and Gun. v. 51; ref. 21966] Headwaters of Jefferson River, Red Rock Lake, Montana, U.S.A. Syntypes: several (whereabouts unknown). Based on descriptive notes of M. Lewis, published by Biddle 1814:411 [ref. 33913] and Coues 1893:545 [ref. 33914]. •Synonym of Thymallus signifer (Richardson 1823) -- (Weiss et al. 2020:[4] [ref. 37974]). Current status: Synonym of Thymallus signifer (Richardson 1823). Salmonidae: Thymallinae. Habitat: freshwater.