Vou. III] GRINNELL—MAMMALS OF CALIFORNIA 347 
Citellus variegatus grammurus (Say) 
Rock Squirrel 
Original description—Sciurus grammurus Say, in Long’s 
Exped. Rocky Mts., 2, 1823, p. 72. 
Type locality—Purgatory River, near mouth of Chacuaco 
Creek, Las Animas County, Colorado (fide Cary, N. Amer. 
leaveroe, Sis}, WEN a. By), 
Range—Upper and Lower Sonoran zones in extreme eastern 
San Bernardino County: Province Mountains and canyons 
of the Colorado River (Merriam, Dept. Agric., Bur. Biol. 
Suny Cine.70y LOlOlsp. 2); 
Citellus tereticaudus tereticaudus (Baird) 
Round-tailed Ground Squirrel 
Original description—S permophilus tereticaudus Baird, Pac. 
Ro RiRep 8, 1857; pp. 315, 316. 
Type locality—Fort Yuma, Imperial County, California. 
Synonym—Round-tailed Spermophile. 
Range—Lower Sonoran zone on the Colorado desert, in 
Imperial County, west to La Puerta, eastern San Diego 
County; north along the valley of the Colorado River as far 
as Needles (Mus. Vert. Zool.). 
Citellus tereticaudus chlorus Elliot 
Palm Springs Ground Squirrel 
Original description—Citellus chlorus Elliot, Field Col. 
Mus., zool. ser., 3, December, 1903, p. 242. 
Type locality—Palm Springs, Riverside County, California. 
Synonym—Pale Spermophile. 
Range—Lower Sonoran zone on the extreme west end of 
the Colorado Desert: Mecca northwest to Whitewater, River- 
side County (Mus. Vert. Zool.). 
Citellus eremonomus Elliot 
Death Valley Ground Squirrel 
Original description—Citellus eremonomus Elliot, Field 
Col. Mus., zool. ser., 3, December, 1903, p. 243. 
