Reithrodontomys sumichrasti (Saussure, 1861) . Rev. Mag. Zool. Paris, Ser. 2, 13:3.

TYPE LOCALITY: Mexico, Veracruz, Mirador (as restricted by Hooper, 1952:72) .

DISTRIBUTION: Allopatric segments in Middle American highlands: SW Jalisco and S San Luis Potosi to C Guerrero and EC Oaxaca, Mexico; C Chiapas, Mexico, to NC Nicaragua; C Costa Rica to W Panama.

SYNONYMS: alleni, australis, dorsalis, luteolus, modestus, nerterus, otus, rufescens, seclusus, underwoodi, vulcanius.

COMMENTS: Subgenus Reithrodontomys, megalotis species group.