Proechimys canicollis (J. A. Allen, 1899) . Bull. Am. Mus. Nat. Hist., 12:200.

TYPE LOCALITY: Colombia, Dept. Magdalena, Bonda near Santa Marta (NW base of Sierra Nevada de Santa Marta) .

DISTRIBUTION: NC Colombia according to Eisenberg (1989:403), but also Venezuela according to Corbet and Hill (1991) and Nowak (1991).

SYNONYMS: vacillator.

COMMENTS: Subgenus Proechimys . The chromosome no. is 2n=24; FN=44.