Phyllotis wolffsohni Thomas, 1902 . Ann. Mag. Nat. Hist., ser. 7, 9: 131.

TYPE LOCALITY: Bolivia, Cochabamba Dept., Tapacari, 9900 ft. (3018 m) .

DISTRIBUTION: E. slopes of Andes in C. Bolivia.

COMMENT: Hershkovitz, 1962, Fieldiana Zool., 46:339, included wolffsohni in darwini . Pearson and Patton, 1976, J. Mammal., 57:341, considered wolffsohni a distinct species.