Calomys musculinus (Thomas, 1913) . Ann. Mag. Nat. Hist., ser. 8, 11: 138.

TYPE LOCALITY: Argentina, Jujuy Prov., Maimara, 2230 m .

DISTRIBUTION: Jujuy, Salta, Tucuman, Catamarca, Mendoza, and Buenos Aires, and probably Cordoba and San Luis Provs. (Argentina).

COMMENT: Included in laucha by Hershkovitz, 1962, Fieldiana Zool., 46: 152; but see Massoia et al., 1968, Rev. Invest. Agro. INTA, ser. 1, Biol. Prod. Anim., 5: 63-92, and Pearson and Patton, 1976, J. Mammal., 57: 348, who considered musculinus a distinct species. Distribution in Buenos Aires Prov. reviewed by Massoia and Fornes, 1967, Acta Zool. Lilloana, 23:407-430.