Ctenomys porteousi Thomas, 1916. Ann. Mag. Nat. Hist., ser. 8, 18:304.

TYPE LOCALITY: Argentina, Buenos Aires Prov., Bonifacio.

DISTRIBUTION: Buenos Aires and La Pampa Provs. (E Argentina).

COMMENTS: Cabrera (1961:555) included australis in this species; but see Contreras and Reig (1965:62) and Roig and Reig (1969:670) who considered australis as a distinct species; this is followed here. The chromosome no. is 2n=47-48.