citellus. 115 



Rock Spermophile. 



Type locality. Rio Sestin, State of Durango, Mexico. 

 Geogr. Distr. State of Durango, Mexico. 



/. CitcUus variegatus iitah Merriam. 



Citelltis variegatus tdah Merr., Proc. Biol. Soc. Wash., xvi, 1903, 



P- 77- 

 Ut.\h Spermophile. 



Type locality. Wasatch Mountains near Ogden, Utah. 



Geogr. Distr. Utah. 



Genl. Char. "Similar to C. variegatus, but smaller, ears longer, 

 back redder, tail darker, nasals longer, and extending more behind 

 premaxillae, point of incisors pale yellow." 



g. Citi'llns rarirgdfiis ilonglasi (Richardson). 



Arctomys {S pernio philns) douglasii Rich., Faun. Bor. Amer., 



Mamm., i, 1829, p. 172. 

 Spermophilus grammurus douglasi Elliot, Syn. X. Am. Mamm,, 

 F. C. M. Pub.. II, 1901, p. 89. Zool. Ser. 

 DouGL.\s' Spermophile. 



Type locality. Plains of the Columbia River, Oregon. 

 Geogr. Distr. Northern California. Oregon. 



//. I'ifelhi.'i variegatus hiickJinji (Slack). 



Spermophilus buckleyi Slack, Proc. Acad. Nat. Scien. Phil., 1861, 



P- 314. 

 Spermophilus grammurus buckleyi Elliot, Syn. N. Arn. Mamm., 



F. C. M. Pub., II, 1901, p. 89. Zool. Ser. 

 Buckley's Spermophile. 



Type locality. Pack-saddle Mountain, Llano County, Texas. 

 Geogr. Distr. Central Texas. 



225. Citellus nesioticus Elliot. 



Citellus nesioticus Elliot, Field Columb. Mus. Pub., in, 1904, p. 

 263. Zool. Ser. 

 Island Sper.mophile. 



Type locality. Santa Catalina Island, California. 



Geogr. Distr. Santa Catalina Island, California. 



Genl. Char. Color dark; little or none of the yellowish brown hue 

 so conspicuous in C. v. beecheyi. Skull shorter and broader; molar 

 broad and heavy; nasals short; braincase short, contracted anteri- 

 orly; antorbital processes very long; pterygoid fossa very short, and 

 processes of pterygoid very long and turning sharply outward at 

 tips ; basi-occipital short and broad ; bullae large ; palate very broad ; 



