RODENTIA: SCIURIDAE 201 



spilosoma — group 

 Citellus spilosoma spilosoma (Bennett) * 



1833. Spermophilus spilosoma Bennett, Proc. Zool. Soc. London, 1833, pt. 1, 



p. 40, May 17, 1833. 

 1884. Spermophilus spilosoma True, Proc. U. S. Nat. Mus., vol. 7 ( App., Circ. 



29), p. 594, Nov. 29, 1884. 

 1904. Citellus spilosoma J. A. Allen, Bull. Amer. Mus. Nat. Hist., vol. 20, 



p. 209, May 28, 1904. 

 Type Locality. — "That part of California that adjoins Mexico." (Name re- 

 stricted by Merriam, North Amer. Fauna No. 4, p. 37, Oct. 8, 1890, to the animal 

 occurring in northern Mexico and extreme western Texas; city of Durango, 

 Durango, Mexico, designated as the type locality by A. H. Howell, North Amer. 

 Fauna No. 56 (April), p. 122, May 18, 1938.) Range.— Central Mexico from 

 the city of Durango south to Aguascalientes; east to western San Luis Potosi, 

 west of city of San Luis Potosi (Dalquest, Proc. Biol. Soc. Washington, vol. 64, 

 p. 107, Aug. 24, 1951) . Zonal range, Lower Sonoran. 



Citellus spilosoma pallescens A. H. Howellf * 



1928. Citellus spilosoma pallescens A. H. Howell, Proc. Biol. Soc. Washington, 

 vol. 41, p. 212, Dec. 18, 1928. 



Type Locality. — La Ventura, Coahuila, Mexico. Range. — North-central Mexico 

 from southern Chihuahua (Santa Rosalia) southward to extreme northern San 

 Luis Potosi and eastward to southern Nuevo Leon (Doctor Arroyo). Zonal 

 range, Lower Sonoran. 



Citellus spilosoma cabrerai Dalquest* 



1951. Citellus spilosma cabrerai Dalquest, Proc. Biol. Soc. Washington, vol. 

 64, p. 106, Aug. 24, 1951. 



Type Locality. — 10 kilometers north-northeast of Nunez, San Luis Potosi, 

 Mexico. Range. — Desert areas of central and eastern San Luis Potosi and prob- 

 ably adjacent parts of Guanajuato and Tamaulipas, Mexico. 



Citellus spilosoma canescens (Merriam) f* 



1890. Spermophilus canescens Merriam, North Amer. Fauna No. 4, p. 38, Oct. 



8, 1890. 

 1890. Spermophilus spilosoma macrospilotus Merriamf , North Amer. Fauna 



No. 4, p. 38, Oct. 8, 1890. (Oracle, Pinal County, Ariz.) 



1901. [Spermophilus spilosoma] microspilotus Elliot, Field Columb. Mus. 

 Publ. 45, Zool. Ser., vol. 2, p. 96, Mar. 6, 1901. (Accidental renaming of 

 macrospilotus.) 



1902. Spermophilus spilosoma arens V. Baileyf , Proc. Biol. Soc. Washington, 

 vol. 15, p. 118, June 2, 1902. (El Paso, El Paso County, Tex.) 



1932. Citellus spilosoma canescens V. Bailey, North Amer. Fauna No. 53 (De- 

 cember 1931), p. 109, Mar. 1, 1932. 



Type Locality. — Willcox, Cochise County, Ariz. Range. — Extreme northern 

 Sonora, west as far as La Noria, Rio Santa Cruz (Burt, Univ. Michigan Mus. 

 Zool. Misc. Publ. 39, p. 37, Feb. 15, 1938) ; southeastern Arizona and south- 

 western New Mexico ; south to Chihuahua City, Chihuahua, Mexico ; west to Altar 

 Valley, Ariz.; north to Gila Valley (Pima), Ariz.; east to Deming, N. Mex., and 

 Fort Hancock, Tex. Zonal range, Lower Sonoran. 



