Peromyscus spicilegus J. A. Allen, 1897 . Bull. Am. Mus. Nat. Hist., 9:50.

TYPE LOCALITY: Mexico, Jalisco, Mascota, Mineral San Sebastian .

DISTRIBUTION: Intermediate elevations of Sierra Madre Occidental from S Sinaloa and SW Durango to WC Michoacan, Mexico.

COMMENTS: Arranged as a subpecies of P. boylii by Osgood (1909; and Hall, 1981). Morphological, chromosomal, and distributional data require its recognition as a species having closer affinity to P. aztecus and its allies (see Bradley and Schmidly, 1987; Carleton, 1977, 1979; Carleton et al., 1982; Hooper, 19686). Includes populations in Michoacan once identified as evides (see Carleton, 1977; Smith et al., 1989). Variation with altitude investigated by Sanchez-Cordero and Villa-Ramirez (1988). P. aztecus species group.