Zygodontomys brunneus Thomas, 1898 . Ann. Mag. Nat. Hist., ser. 7, 2:269.

TYPE LOCALITY: Colombia, "El Saibal, W. Cundinamarca." Indeterminate nature of type locality discussed by Voss (1991a) .

DISTRIBUTION: Intermontane valleys of N Colombia.

SYNONYMS: borreroi.

COMMENTS: Relegated to a subspecies of Z. brevicauda by Gyldenstolpe (1932) and Hershkovitz (1962), but specific status documented by Voss (1991a).