Phyllotis magister Thomas, 1912 . Ann. Mag. Nat. Hist., ser. 8, 10:406.

TYPE LOCALITY: Peru, Arequipa Dept., Arequipa, 2300 m .

DISTRIBUTION: Andes of S. Peru and N. Chile.

COMMENT: Formerly included definitus; see Pearson, 1972, J. Mammal., 53:680-682. Hershkovitz, 1962, Fieldiana Zool., 46:288, included magister in darwini, but see Pearson, 1972, J. Mammal., 53:682, and Pearson and Patton, 1976, J. Mammal., 57:339, 346, who considered magister a distinct species. Reported from N. Chile by Spotorno, 1976, An. Mus. Hist. Nat. Valparaiso, 9: 141- 161, and Pine et al., 1979, Mammalia, 43:355.