Bibimys chacoensis (Shamel, 1931) . J. Washington Acad. Sci., 21:247.

TYPE LOCALITY: Argentina, Chaco Prov., Las Palmas .

DISTRIBUTION: NE Argentina.

COMMENTS: Described as a species of Akodon; transferred to Bibimys by Massoia (1980a), who noted the need to clarify the differentiation of this form from B. torresi .