Peromyscus crinitus (Merriam, 1891) . N. Am. Fauna, 5:53.

TYPE LOCALITY: USA, Idaho, Jerome Co., Shoshone Falls, north side of Snake River .

DISTRIBUTION: E Oregon and SW Idaho, south through Nevada and parts of Utah and W Colorado, USA, to Baja California Norte and NW Sonora, Mexico.

SYNONYMS: auripectus, delgadilli, disparilus, doutii, pallidissimus, pergracilis, peridoneus, petraius, rupicolus, scitulus, scopulorum, stephensi .

COMMENTS: Revised by Osgood (1909); subspecific taxonomy updated by Hall and Hoffmeister (1942). Initially placed in subgenus Haplomylomys (Osgood, 1909); later transferred to subgenus Peromyscus (Hooper and Musser, 1964b) . Karyotype viewed as primitive for the genus (Greenbaum and Baker, 1978; Stangl and Baker, 1984b). Specific homogeneity questionable. P. crinitus species group. See Johnson and Armstrong (1987, Mammalian Species, 287).