Hodomys alleni (Merriam, 1892) . Proc. Biol. Soc. Washington, 7:168.

TYPE LOCALITY: Mexico, Colima, Manzanillo .

DISTRIBUTION: Southernmost Sinaloa to Oaxaca; interior Mexico along basin of Rio Balsas to central Puebla.

SYNONYMS: elattura, guerrerensis, vetulus .

COMMENTS: Kelson (1952) placed vetulus as a subspecies of N. alleni . See Genoways and Birney, 1974 (Mammalian Species, 41, as Neotoma alleni), who first reported the karyotype (2n=48).