Thomasomys taczanowskii (Thomas, 1882) . Proc. Zool. Soc. Lond., 1882:109.

TYPE LOCALITY: Peru, Cajamarca Dist., Rio Malleta, Tambillo .

DISTRIBUTION: N.W. Peru.

COMMENT: Karyology reviewed by Gardner and Patton, 1976, Occas. Pap. Mus. Zool. La. St. Univ., 49:26, 32.

ISIS NUMBER: 5301410008055024001.