184 BULTJiTIN 138, UNITED STATES NATIONAL MUSEUM. 



t*Callospermophilus madrensis Merriam. 



1901. CallospermopTiilus madrensis Merriam, Proc. Washington 

 Acad. Sci., vol. 3, p. 563. November 29, 1901. 



Type Locality. — Sierra Madre, near Guadalupe y Calvo, Chi- 

 huahua, Mexico. Altitude, 7,000 feet. 



*Callospermophilus trepidus Taylor. 



1910. Callospermopliilus trepidus Taylor, Univ. Calif. Publ. 



Zool., vol. 5, p. 283. February 12, 1910. 

 Type Locality. — Head of Big Creek, Pine Forest Mountains, 

 Humboldt County, Nevada. Altitude, 8,000 feet. 



*Callospermophilus wortmani (Allen). 



1895. Tamias wortmani Allen, Bull. Amer. Mus. Nat. Hist., 



vol. 7, p. 335. November 8, 1895. 

 1910. CallospermopJiilus wortmani Warren, Mamm. Colorado, 



p. 169. 

 Type Locality. — Kinney Ranch, Bitter Creek, Sweetwater 



County, Wyoming. 



Genus CITELLUS Oken. (Ground-squirrels.) 



1816. CiteUus Oken, Lehrbuch der Zoologie, pt. 3, vol. 2, p. 842. 



Type, Mus citellus Linn^us. 

 1877. Ictidomys Allen, Monogr. N. Amer. Rodentia, p. 821. 



August, 1877. Type, Sciurus tridecemlineatus Mitchell. 



(See MeiTiam, Science, n. s., vol. 2, p. 418. September 27, 



1895.) 

 1893. Xerospermopihilus Merriam, Proc. Biol. Soc. Washington, 



vol. 7, p. 27. April 13, 1893. Type, Spermophilus moJiavensis 



Merriam. 



1902. Citellus Allen, Bull. Amer. Mus. Nat. Hist., vol. 16, p. 375. 

 October 11, 1902. 



1907. Ictidomoides Mearns, Mamm. Mex. Boundary U. S., pt. 1, 

 p. 328. April 13, 1907. Type, Sciurus mexicanus Erxleben. 



t*Citellus armatus (Kennicott). 



1863. SpermopTiilus armatus Kennicott, Proc. Acad. Nat. Sci. 



Philadelphia, p. 158. 

 1891. Spermophilus armatus Merriam, North Amer. Fauna, 



No. 5, p. 38. July 30, 1891. 

 1904. [Citellus] armatus Trouessart, Catal. Mamm. viv. foss., 



suppl., p. 339. 

 Type Locality. — Foothills of the Uinta Mountains, near Fort 



Bridger, Uinta County, Wyoming. 



