210 U. S. NATIONAL MUSEUM BULLETIN 205 



1951) ; and southeastern Colorado; north to Coventry, Colo.; south to Taylor, 

 Ariz. Zonal range, mainly Upper Sonoran. 



Citellus leucurus pennipes (A. H. Howell) f * 



1931. Ammospermophilus leucurus pennipes A. H. Howell, Journ. Mamm., 

 vol. 12, No. 2, p. 162, May 14, 1931. 



1938. Citellus leucurus pennipes A. H. Howell, North Amer. Fauna No. 56 

 (April), p. 175, May 18, 1938. 



Type Locality. — Grand Junction, Mesa County, Colo. Range. — The Colorado 

 Valley and its tributaries (except San Juan) in western Colorado, eastern Utah 

 (see Kelson, Univ. Utah Biol. Ser., vol. 11, No. 3, p. 32, Feb. 15, 1951), and 

 northwestern New Mexiso; north to Vernal, Uintah County, Utah, and Rangely, 

 Rio Blanco County, Colo.; west to Thurber, Wayne County, Utah; south to 

 Socorro Mountains, N. Mex. Zonal range, Upper Sonoran. 



Citellus leucurus peninsulae (J. A. Allen) * 



1893. Tamias leucurus peninsulae J. A. Allen, Bull. Amer. Mus. Nat. Hist., 



vol. 5, p. 197, Aug. 18, 1893. 

 1903. Citellus leucurus peninsulae Elliot, Field Columb. Mus. Publ. 79, Zool. 



Ser., vol. 3, No. 12 (June), p. 211, Aug. 15, 1903. 

 Type Locality. — San Telmo, Baja California, Mexico. Range. — Western side 

 of Baja California Peninsula; east to base of Sierra San Pedro Martir; south to 

 San Fernando. Zonal range, Upper Sonoran. 



Citellus leucurus canfieldae (Huey) * 



1929. Ammospermophilus leucurus canficldae Huey, Trans. San Diego Soc 



Nat. Hist., vol. 5, No. 15, p. 243, Feb. 27, 1929. 

 1938. Citellus leucurus canfieldae A. H. Howell, North Amer. Fauna No. 56 



(April), p. 178, May 18, 1938. 

 Type Locality.— Punta Prieta, lat. 28°56' N., long. 114°12 / W., Baja Cali- 

 fornia, Mexico. Range. — Desert region of central Baja California, from about 

 lat. 30° N. southward over Vizcaino Desert to about lat. 28° N. Zonal range, 

 Lower Sonoran. 



Citellus leucurus extimus (Nelson and Goldman) f * 



1929. Ammospermophilus leucurus extimus Nelson and Goldman, Journ. 

 Washington Acad. Sci., vol. 19, No. 13, p. 281, July 19, 1929. 



1938. Citellus leucurus extimus A. H. Howell, North Amer. Fauna No. 56 

 (April), p. 179, May 18, 1938. 



Type Locality. — Saccaton (15 miles north of Cape San Lucas) , Baja California, 

 Mexico. Range. — Southern part of Baja California Peninsula from Cape San 

 Lucas north to about lat. 28° N. (except the Vizcaino Desert) ; ranging from sea 

 level to about 1,000 feet altitude on slopes of mountains. Zonal range, Lower 

 Sonoran and Tropical. 

 Citellus interpres (Merriam)f* 



1890. Tamias interpres Merriam, North Amer. Fauna No. 4, p. 21, Oct. 8, 1890. 

 1904. [Citellus] interpres Elliot, Field Columb. Mus. Publ. 95, Zool. Ser., 



vol. 4, pt. 1, p. 143, Aug. 2, 1904. 

 Type Locality. — El Paso. El Paso County, Tex. Range. — Western Texas and 

 south-central New Mexico, north to Manzano Mountains; east to Pecos River 



