Ctenomys conoveri Osgood, 1946 . Fieldiana Zool., 31:47.

TYPE LOCALITY: Paraguay, Boqueron, 16 km W of Filadelfia (22°15'S, 60°10'W) .

DISTRIBUTION: Chaco of Paraguay, and adjacent Argentina.

COMMENTS: Cabrera (1961:556) based on Osgood (1946:47) placed this form in a separate subgenus Chacomys, as did Nowak (1991:940). The chromosome no. is 2n=48-50.