Reithrodontomys megalotis (Baird, 1858) . Mammals, in Repts. Expl. Surv...., 8(1):451.

TYPE LOCALITY: Mexico or U.S.A., type from between Janos, Chihuahua, and San Luis Springs, Grant Co., New Mexico .

DISTRIBUTION: C. Oaxaca to N.C. and N.W. Mexico; W. and N.C. U.S.A.; S.C. British Columbia and S.E. Alberta (Canada).

COMMENT: Subgenus Reithrodontomys; see Hooper, 1952, Mise. Publ. Mus. Zool. Univ. Mich., 77:1 -255.

ISIS NUMBER: 5301410008047010001.