Ctenomys pearsoni Lessa and Langguth, 1983 . Res. Com. Jour. Cienc. Nat. Montevideo (Uruguay) 3:86.

TYPE LOCALITY: Uruguay, Dept. Colonia, 25 km SE of Carmelo, Arroyo Limetas .

DISTRIBUTION: Soriana, San José, and Colonia Depts. (Uruguay).

COMMENTS: The chromosome no. is 2n=56-70.