richardsoni, Catostomus Harper [F.] & Nichols [J. T.] 1919:263, Pl. 15 (fig. 1) [Bulletin of the American Museum of Natural History v. 41 (art. 2); ref. 15213] Taltson River at junction with Tazin River, Mackenzie, Canada, 60°26'02"N, about 111°W. Holotype: not saved, based on photo. Type catalog: Gilbert 1998:197-198 [ref. 23395]. Based on "type", other specimens, and literature sources. •Synonym of Catostomus commersonii (Lacepède 1803) -- (Gilbert 1998:198 [ref. 23395] as commersoni). Current status: Synonym of Catostomus commersonii (Lacepède 1803). Catostomidae: Catostominae. Habitat: freshwater.