Nyctomys sumichrasti (Saussure, 1860) . Rev. Mag. Zool. Paris, ser. 2, 12:107.

TYPE LOCALITY: Mexico, Veracruz, Uvero, 20 km NW Santiago Tuxtla (as restricted by Alvarez, 1963b) .

DISTRIBUTION: S Jalisco and S Veracruz, Mexico, south to C Panama, excluding the Yucatan Peninsula.

SYNONYMS: colimensis, costaricensis, decolorus, florencei, nitellinus, pallidulus, salvini, venustulus.

COMMENTS: Standard and banded karyotypes described by Lee and Elder (1977) and Haiduk et al. (1988), respectively.