Onychomys torridus (Coues, 1874) . Proc. Acad. Nat. Sci. Philadelphia, 26:183.

TYPE LOCALITY: USA, Arizona, Graham Co., Camp Grant .

DISTRIBUTION: C California, S Nevada, and extreme SW Utah, USA, south to N Baja California, W Sonora, and northernmost Sinaloa, Mexico.

SYNONYMS: clarus, knoxjonesi, longicaudus, macrotis, perpallidus, pulcher, ramona, tularensis, yakiensis.

COMMENTS: See comments under O. arenicola . See McCarty (1975, Mammalian Species, 59, including arenicola). Hollander and Willig (1992) described the Sinoloan knoxjonesi.