Oligoryzomys andinus (Osgood, 1914) . Field Mus. Nat. Hist. Pubi., Zool. Ser., 10:156.

TYPE LOCALITY: Peru, La Libertad Dept., upper Rio Chicama, Hacienda Liagueda, 6000 ft .

DISTRIBUTION: W Peru and WC Bolivia; geographic and altitudinal limits uncertain.

COMMENTS: Karyotype reported by Gardner and Patton (1976).