The tottil leiit^'th of llic rock-squirrel is about 17 or 18 inches, 

 and the tail is the longest of the Citellus group occurring in the 

 State. Ill coloi' they resi^nble the Eastern gray-squirrel somewhat. 

 From our records the food of the rock squirrel consists of seeds of 

 various kinds, apples, cherries, apricots, chokecherries, blackl)(^r- 

 ries, squash and melons. They also eat garden peas, grains of all 

 kinds and feed to some extent on the seed pods of the Yucca and 

 Indian breadroot ( Psovaica) . 



The rock-squirrel probably eats less flesh than any other of 

 the ground squirrels. Caged specimens that we had in tlui College 

 Museum for several months, refused to eat insects, or flesh of any 

 kind. 



Fig. 11. Spotted Ground Squirrel iCitellns ohsoJetns) . From a .specimen 

 taken at Wolt Creek, Elbert County, in April. Original. M. A. I'almer, De- 

 lineator. 



Colorado Species of Spotted Ground- Squirrels. 



Kennicott's Ground-Squirrel, Citellus ohsoletus. 



Large spotted Ground-Squirrel, Citellus spilosoma major. 



Our records show that ohsoletus has a general distribution 

 over the eastern, plains, north of the Arkansas valley. Just how 

 far west its range extends we do not know. I have taken it at Wolf 

 Creek, Elbert County, and observed it at Dent and Dover in 

 western Weld County. 



In conversation with a ranchman living ten miles north of 

 Wellington, Larimer County, he stated that while poisoning prairie- 

 dogs in the summer of 1916 he found a small spotted ground-squir- 

 rel dead in the dog-towai. On being shown a specimen each of 

 ohsoletus and pallidus, he at once picked ohsoletus as like the one 

 he had found dead. He was also familiar with pallidus, saying 

 that it was very common, but the spotted one that he had found 

 dead was the only one of that kind he had seen. If this is not a 



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