204 U. S. NATIONAL MUSEUM BULLETIN 205 



and South Dakota, to central Nebraska and to eastern Kansas ; and from north- 

 western Indiana, and southern Wisconsin, and southern and western Minnesota 

 south to central Missouri and southeastern Kansas. Zonal range, Transition 

 and Upper Austral. 



Subgenus OTOSPERMOPHILUS Brandt 



1844. Otospermophilus Brandt, Bull. Acad. Imp. Sci. St. Petersbourg, Class. 

 Phys. Math., vol. 2, p. 379, March 1844. (Type, Sciurus grammurus Say.) 



Citellus variegatus variegatus (Erxleben) * 



1777. [Sciurus] variegatus Erxleben, Systema regni animalis . . . , p. 421. 



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

 vol. 4, pt. 1, p. 148, Aug. 2, 1904. 



1938. Citellus variegatus variegatus A. H. Howell, North Amer. Fauna No. 

 56, (April), p. 136, May 18, 1938. 



Type Locality. — Not designated by Erxleben; fixed at Valley of Mexico, 

 near city of Mexico (Nelson, Science, new ser., vol. 8, No. 208, p. 898, Dec. 23, 

 1898). Range. — Central Mexico, from southern Zacatecas and San Luis Potosi 

 south to Michoacan and Valley of Mexico; west to Colima, Jalisco, and Nayarit. 

 Zonal range, Upper and Lower Sonoran. 



Citellus variegatus rupestris J. A. Allen* 



1903. Citellus (Otospermophilus) grammurus rupestris J. A. Allen, Bull. 

 Amer. Mus. Nat. Hist., vol. 19, p. 595, Nov. 12, 1903. 



1938. Citellus variegatus rupestris A. H. Howell, North Amer. Fauna No. 56, 

 (April), p. 138, May 18, 1938. 



Type Locality. — Rio Sestin, northwestern Durango, Mexico. Range. — East- 

 ern and western slopes of Sierra Madre and adjoining plains on eastern side 

 from southern Durango north to west-central Chihuahua (Knobloch, Journ. 

 Mamm., vol. 23, No. 3, p. 297, Aug. 14, 1942) ; east to city of Chihuahua and 

 Santa Rosalia; west to Sierra de Choix, Sinaloa. Zonal range, Upper and 

 Lower Sonoran and Transition. 



Citellus variegatus couchii (Baird)f* 



1855. Spermophilus couchii Baird, Proc. Acad. Nat. Sci. Philadelphia, vol. 7 

 (1854-1855), p. 332, April 1855. 



1938. Citellus variegatus couchii A. H. Howell, North Amer. Fauna No. 56 

 (April), p. 139, May 18, 1938. 



Type Locality. — Santa Catarina (a few miles west of Monterrey), Nuevo Leon, 

 Mexico. Range. — Northeastern Mexico, from southern Coahuila and Nuevo 

 Leon north to Chisos Mountains, Tex. (Rock squirrel of Davis Mountain region, 

 Tex., regarded as closer to typical couchii by Blair, Univ. Michigan Mus. Zool. 

 Misc. Publ. 46, p. 26, June 28, 1940.) Zonal range, Upper and Lower Sonoran. 



Citellus variegatus buckleyi (Slack) * 



1861. Spermophilus buckleyi Slack, Proc. Acad. Nat. Sci. Philadelphia, vol. 



13, p. 314. 

 1896. Spermophilus grammurus buckleyi J. A. Allen, Bull. Amer. Mus. Nat. 



Hist., vol. 8, p. 67, Apr. 22, 1896. 

 1905. Citellus variegatus buckleyi V. Bailey, North Amer. Fauna No. 25, p. 84, 



Oct. 24, 1905. 



