dissimilis, Luxilus Kirtland [J. P.] 1840:341, Pl. 4 (fig. 2) [Boston Journal of Natural History v. 3 (nos 3-4) (art. 10, 17); ref. 18404] Mahoning River, near Youngstown, [and probably not Lake Erie at Cleveland] Ohio, U.S.A. No types known. Type catalog: Gilbert 1998:72 [ref. 23395]. •Valid as Hybopsis dissimilis (Kirtland 1840) -- (Lee et al. 1980:184 [ref. 22416], Smith 1986:138 [ref. 22186], Robison & Buchanan 1988:184 [ref. 23393]). •Valid as Erimystax dissimilis (Kirtland 1840) -- (Page & Burr 1991:105 [ref. 18983], Boschung 1992:48 [ref. 23239], Etnier & Starnes 1993:166 [ref. 22809], Jenkins & Burkhead 1994:332 [ref. 21581], Stauffer et al. 1995:80 [ref. 23376], Mettee et al. 1996:183 [ref. 25836], Gilbert 1998:72 [ref. 23395], Simons 2004:354 [ref. 27695], Nelson et al. 2004:70 [ref. 27807], Boschung & Mayden 2004:179 [ref. 27995] with date as 1841, Scharpf 2005:16 [ref. 28940] dated 1841, Page & Burr 2011:214 [ref. 31215], Page et al. 2013:70 [ref. 32708] dated 1841, Bagley et al. 2023:313 [ref. 41241], Page et al. 2023:69 [ref. 40505]). Current status: Valid as Erimystax dissimilis (Kirtland 1840). Leuciscidae: Pogonichthyinae. Distribution: Eastern North America: eastern U.S.A. Habitat: freshwater.