Peromyscus pectoralis Osgood, 1904 . Proc. Biol. Soc. Wash., 17:59.

TYPE LOCALITY: Mexico, Queretaro, Jalpan .

DISTRIBUTION: S.E. New Mexico and C. Texas (U.S.A.) to Jalisco and Hidalgo (Mexico).

COMMENT: Includes collinus and laceianus; see Schmidly, 1972, Southwest. Nat., 17: 113-138, Kilpatrick and Zimmerman, 1975, Syst. Zool., 24:143-162, and Kilpatrick and Zimmerman, 1976, J. Mammal., 57:506-522. Possibly a composite of two or more species; see Avise et al., 1974, J. Mammal., 55:761. Reviewed by Schmidly, 1974, Mamm. Species, 49:1-3, and Carleton, 1977:1-47.

ISIS NUMBER: 5301410008039043001.