Ctenomys lewisi Thomas, 1926 . Ann. Mag. Nat. Hist., ser. 9, 17:323.

TYPE LOCALITY: Bolivia, Tarija Dept., Sama, 4,000 m .

DISTRIBUTION: S Bolivia.

COMMENTS: May be semi-aquatic (Anderson, pers. comm.). See Cook et al. (1990:13-16). The chromosome no. is 2n=56; FN=74.