876 



MONOGRAPHS OF XOHTU AMERICAN UODENTIA. 



queni intervals from Minnesota westward to the Rocky Mountains and south- 

 ward to Missouri and Western Texas. As shown by the subjoined lists of 

 specimens, it has been taken at Eagle Pass (Texas), Fort Garland (Southern 

 Colorado), Southwestern Wyoming, and Fort Bridger, Utah. Woodhouse 

 also met with it on the prairies of the Cherokee Nation. It is abundant 

 throughout the prairie region east of the Mississippi, from Minnesota and 

 Wisconsin eastward to Northern Ohio. Kennicott states that its range in 

 Illinois does not extend southward beyond latitude 39°. 



Table CXVIII. — Measurements of six skulls of Sr. tridecemlineatus var. tridecemlineatus. 



Table CXIX. — Measurements of two skulls of Spermophilus tridecemlineatus rar. pallidus. 



