Xyrauchen Eigenmann [C. H.] & Kirsch [P. H.] in Kirsch 1889:556 Masc. Quassilabia cypho Lockington 1879. Type by original designation (also monotypic). •Valid as Xyrauchen Eigenmann & Kirsch 1889 -- (Gilbert 1998:21 [ref. 23395], Scharpf 2006:13 [ref. 30386], Minckley & Marsh 2009:207 [ref. 31114], Page et al. 2013:81 [ref. 32708]). •Synonym of Catostomus Lesueur 1817 -- (Chen & Mayden 2012:195 [ref. 32390], Bagley et al. 2018:26 [ref. 36001]). Current status: Valid as Xyrauchen Eigenmann & Kirsch 1889. Catostomidae: Catostominae.