Vou. IIT] GRINNELL—MAMMALS OF CALIFORNIA 339 
Perodipus microps levipes Merriam 
Light-footed Kangaroo Rat 
Original description—Perodipus microps levipes Merriam, 
Proc. Biol. Soc. Wash., 17, July 14, 1904, p. 145. 
Type locality—Perognathus Flat, Emigrant Gap, Panamint 
Mountains, Inyo County, California. 
Range—Known only from the original description, as above. 
Dipodomys deserti deserti Stephens 
Big Desert Kangaroo Rat 
Original description—Dipodomys deserti Stephens, Amer. 
Nat., 21, January, 1887, pp. 42-49, pl. 5. 
Type locality—Mohave River, near Hesperia, San Bernar- 
dino County, California. 
Synonym—Desert Pocket Rat. 
Range—Lower Sonoran zone on the Colorado and Mohave 
deserts ; west to Carrizo Creek, western Imperial County, and 
to Palm Springs, Riverside County; north at least to Ballarat, 
Inyo County (Mus. Vert. Zool.; Elliot, Field Col. Mus., zool. 
ser., 3, 1904, p. 304). 
Dipodomys deserti helleri Elliot 
Heller Kangaroo Rat 
Original description—Dipodomys deserti helleri Elliot, Field 
Col. Mus., zool. ser., 3, December, 1903, p. 249. 
Type locality—Keeler, Owens Lake, Inyo County, Cali- 
fornia. 
Range—Lower Sonoran zone in near vicinity of Owens 
Lake, Inyo County (Mus. Vert. Zool.). 
Dipodomys merriami simiolus Rhoads 
Allied Kangaroo Rat 
Original description—Dipodomys simiolus Rhoads, Proc. 
Acad. Nat. Sci. Phila. (1893), January, 1894, pp. 410, 411. 
Type locality—Agua Caliente (=Palm Springs), Riverside 
County, California. 
Synonyms—Dipodomys similis Rhoads, Proc. Acad. Nat. 
Sci. Phila. (1893), January, 1894, p. 411 (type from White- 
