216 University of California rublications in Zoologij. [Vol. 7 



jiivenals (nos. 8174, 8176, 8177) were taken, the first two 

 June 29. and the last July 1. One male (no. 8185) taken July 22 

 had the testes enlarged, and two females (nos. 8175, 8183), June 

 29 and July 14, respectively, showed by the condition of the 

 teats that they had recenth^ suckled young. There were two 

 pairs of pectoral and three pairs of abdominal mammae. No 

 females containing embryos were secured. Probably the young 

 are born principally in April and May. 



Of the twelve examples preserved, six are males and six 

 females. 



Citellus mollis (Kennicott). 

 Piute Ground Squirrel. 



Status.- — The type locality of mollis is given in the original 

 description (Kennicott, 1863, p. 157) as Camp Floyd and Rocky 

 ^Mountains, Utah. Our series of twenty-four specimens presents 

 some of the characters as therein outlined, although several (nos. 

 8163, 8172, 8166, for example) have no "dirty creamy yellow" 

 on the underparts, the color being white modified by the 

 plumbeous bases showing through. The "distinct and promi- 

 nent border and tip of white" on the tail is not apparent. One 

 specimen only (no. 8165) possesses the white tail edging, the 

 others having the margin and tip varying from light gray to 

 buff. No mention of the coloration of the head is made by Ken- 

 nicott. There is proportionally more buff on the sides of the 

 neck and on the head than elsewhere. In general juvenals differ 

 from the adults in the possession of softer and more silky pelage, 

 the coloration being practically identical. One juvenal (no. 

 8314) is much darker than the adults, and has a richer buff- 

 gray color on the head. 



The measurements of mollis are given as follows : length 6.50 

 inches (=165 mm.), and tail vertebrae 1.70 inches (=43.1 

 mm.). ]\Ieasurement of hind foot is not given. Taking the 

 adults of our series into consideration, the dimensions of our 

 specimens are greater than those given by Kennicott (see tal)le). 

 Possibly he measured a young specimen. 



