Peromyscus aztecus (Saussure, 1860) . Rev. Mag. Zool. Paris, Ser. 2, 12: 105.

TYPE LOCALITY: Mexico, Veracruz, vicinity of Mirador .

DISTRIBUTION: Intermediate to high altitudes from S Jalisco and C Veracruz, Mexico, through highlands of Guatemala, to Honduras and N El Salvador.

SYNONYMS: cordillerae, evides, hondurensis, hylocetes, oaxacensis .

COMMENTS: Traditionally viewed as a subspecies of P. boylii (Osgood, 1909) . Species status recognized by Alvarez (1961); morphological recognition, distribution, and synonymies clarified by Musser (1969a) and Carleton (1979). Several of the junior synonyms (evides, hylocetes, oaxacensis) have been treated as species (Hooper, 1968b; Osgood, 1909) and their inclusion under P. aztecus deserves further scrutiny (e.g., see Smith et al., 1989; Sullivan and Kilpatrick, 1991). Systematic relationships examined by Bradley and Schmidly (1987), Smith (1990), and Sullivan and Kilpatrick (1991). Segregated together with P. spicilegus and P. winkelmanni as the aztecus species group by Carleton (1989).