Megadontomys nelsoni (Merriam, 1898) . Proc. Biol. Soc. Washington, 12:116.

TYPE LOCALITY: Mexico, Veracruz, Jico, 6000 ft .

DISTRIBUTION: E slopes of Sierra Madre Oriental, from SE Hidalgo to C Veracruz, Mexico.

COMMENTS: Relegated to a subspecies of Peromyscus thomasi by Musser (1964); reinstated to species rank by Carleton (1989).