egregia, Tigoma Girard [C. F.] 1858:291 [General report upon zoology of the several Pacific railroad routes, 1857; ref. 4911] Humboldt River [from USNM records], near Imlay, Pershing County, northern Nevada, U.S.A. Holotype (unique): USNM 226 (plus pair of pharyngeal bones as #2780). Type catalog: Gilbert 1998:74 [ref. 23395]. •Valid as Richardsonius egregius (Girard 1858) -- (Lee et al. 1980:359 [ref. 22416], Page & Burr 1991:71 [ref. 18983], Gold 1994:815 [ref. 22426], La Rivers 1994:399 [ref. 23389], Gilbert 1998:74 [ref. 23395], Scott & Crossman 1998:504 [ref. 24570], Fuller et al. 1999:150 [ref. 25838], Moyle 2002:134 [ref. 26449], Nelson et al. 2004:77 [ref. 27807], Scharpf 2005:40 [ref. 28940], Page & Burr 2011:164 [ref. 31215], Page et al. 2013:78 [ref. 32708], Page et al. 2023:76 [ref. 40505]). Current status: Valid as Richardsonius egregius (Girard 1858). Leuciscidae: Pogonichthyinae. Distribution: Western North America: Nevada and California (western U.S.A.). Introduced elsewhere. Habitat: freshwater.