Ctenomys Blainville, 1826 . Bull. Sci. Soc. Philom. Paris, p. 62.

TYPE SPECIES: Ctenomys brasiliensis Blainville, 1826 .

SYNONYMS: Chacomys, Haptomys, Orycteromys.

COMMENTS: Cabrera (1961, based on Osgood, 1946) and Nowak (1991) listed two subgenera: Ctenomys, with all but C. conoveri, which is placed in subgenus Chacomys . Revision of Revision of this genus may reduce the number of species recognized. The chromosomal variation within Ctenomys is 2n= 10-70.