334 CALIFORNIA ACADEMY OF SCIENCES  [Proc. 4TH Ser. 
Perognathus fallax pallidus Mearns 
Pallid Short-eared Pocket Mouse 
Original description—Perognathus fallax pallidus Mearns, 
Proc. Biol. Soc. Wash., 14, August 9, 1901, pp. 135, 136. 
Type locality—Mountain Spring, east slope of coast range 
near Mexican boundary, in San Diego County, California. 
Range—Lower Sonoran zone along western rim of Colo- 
rado and Mohave deserts, from the Mexican line northwest 
at least to Victorville; in other words, east slope of main moun: 
tain divides in San Diego, Riverside and San Bernardino 
counties (Mus. Vert. Zool.). 
Perognathus californicus californicus Merriam 
California Pocket Mouse 
Original description—Perognathus californicus Merriam, N. 
Amer. Fauna, 1, October, 1889, p. 26. 
Type loca Bercy, Alameda County, Galion. 
Synonyms—Perognathus armatus Merriam, supra cit., p. 
27 (type from Mount Diablo, Contra Costa County, Califor- 
nia); Perognathus californicus dispar Osgood, N. Amer. 
Fauna, 18, 1900, p. 58 (type from Carpinteria, Santa Bar- 
bara County, California), part. 
Range—Upper Sonoran zone in west central California, 
south of Golden Gate and Strait of Carquinez; south through 
the northern part of the San Diegan district at least to and 
including Los Angeles County; also western foothills of south- 
ern Sierra Nevada north at least to Raymond, Madera County 
(Mus. Vert. Zool.; Osgood, supra cit., p. 59). 
Perognathus californicus ochrus Osgood 
Kern County Pocket Mouse 
Original description—Perognathus californicus ochrus Os- 
good, Proc. Biol. Soc. Wash., 17, June 9, 1904, p. 128. 
Type locality—Santiago Springs, 16 miles southwest of 
McKittrick, Kern County, California. 
Synonym—Perognathus californicus dispar, part. 
Range—Lower Sonoran zone in the southern San Joaquin 
Valley, west to Cuyama Valley, and north to Alcalde, Fresno 
County (Osgood, supra cit.). 
