Phyllotis osgoodi Mann, 1945 . Biologica, 2:81.

TYPE LOCALITY: Chile, Puna of Tarapaca, Parinacota .

DISTRIBUTION: Altiplano of Arica Prov. (Chile).

COMMENT: Included in darwini by Pearson, 1958, Univ. Calif. Publ. Zool., 56(4):415, Hershkovitz, 1962, Fieldiana Zool., 46:304, and Pine et al., 1979, Mammalia, 43:353-354; but see Spotorno, 1976, An. Mus. Hist. Nat. Valparaiso, 9: 141-161, Spotorno and Walker, 1979, Arch. Biol. Med. Exp., 12:83-90, and Walker et al., 1979, Cytogenet. and Cell Genet., 24:209-216, who considered osgoodi a distinct species.