Microtus guatemalensis Merriam, 1898 . Proc. Biol. Soc. Washington, 12:108.

TYPE LOCALITY: Guatemala, Huehuetenango Dept., Todos Santos, 10,000 ft .

DISTRIBUTION: Highland meadows of C Chiapas, Mexico, and C Guatemala.

COMMENTS: Type species of Herpetomys, usually placed in Microtus, with (Bailey, 1900) or without (Hall, 1981) subgeneric ranking; or placed in Pitymys when used as a genus (Honacki et al., 1982; Martin, 1974).