Akodon boliviensis Meyen, 1833 . Verhandl. Kais. Leop.-Carol. Akad. Wiss., 16(2):600, pl. 43, fig. 1.

TYPE LOCALITY: Peru, Puno Dept., Pichu-Pichun, 14,000 ft (location clarified by Myers et al., 1990:49) .

DISTRIBUTION: Altipiano of SE Peru and NC Bolivia.

SYNONYMS: pacificus .

COMMENTS: Subgenus Akodon . Karyology and geographic variation evaluated by Myers et al. (1990), who more narrowly defined the morphological and distributional boundaries of A. boliviensis, excluding spegazzinii and subfuscus, forms which had been arranged as subspecies (e.g., Cabrera, 1961). Southern range limits poorly understood (see Myers et al., 1990).