320 



Description of a New Spermojjhile. 



ing character, and one by which the t*7o species may be sepa- 

 rated at a glance. In heldingi the coronoid process is shorter, 

 Bmaller, more slender, and bent more abruptly backward than 

 in townsendi. There is also a difference in the height of the 

 condylar process^above the angle. 



Spermophilus heldingi Merriam, 

 (Type.) Nat. size, skull. 



? ad. 



3342 



Lower jaw of same. 

 (Type.) Nat. size. 



