Peromyscus megalops Merriam, 1898 . Proc. Biol. Soc. Washington, 12:119.

TYPE LOCALITY: Mexico, Oaxaca, La Cieneguilla ranch, near Santa Maria Ozolotepec, 10,000 ft .

DISTRIBUTION: Sierra Madre del Sur of Guerrero and Oaxaca, Mexico.

SYNONYMS: auritus, complus.

COMMENTS: Following Osgood (1909), Hall (1981) continued to maintain melanurus as a subspecies, a form which Huckaby (1980) documented as a species distinct from P. megalops . Distribution and ecology reviewed by Musser (1964). Carleton (1989) observed Osgood's (1909) earlier arrangement of a megalops species group (including P. melanocarpus and P. melanurus) apart from the mexicanus species group.