278 Bulletin American Museum of Natural History. [Vol. XX, 



a number of these growths and found them filled with plant 

 lice; one, however, had a large white larva in it. As there 

 were many leaves on the poplar which did not have this 

 abnormality, and as no leaves were cut which did not bear it 

 (I examined a large number), the inference is that the squir- 

 rel desired these excrescences for food." M. P. A. 



5. Citellus stonei Allen. STONE'S GROUND SQUIRREL. 



Citellus stonei ALLEN, Bull. Am. Mus. Nat. Hist., XIX, 1903, pp. 

 533 and xvii, Oct. 10, 1904. Type, locality, Stevana Flats, Alaska 

 Peninsula; erroneously given in the original description as Wran- 

 gel, Alaska (corrected, /. c., p. xvii). 



Fifteen specimens (all practically topotypes), Alaska Penin- 

 sula, taken as follows: Herendeen Bay, 7, May 19 and 20; 

 Muller Bay, 8, May 24- June 8. 



The type was collected by Mr. Stone, in the hills north of 

 Stevana Flats, June 7, 1902; the present series was taken in 

 the same immediate region, and all within a distance of thirty 

 miles along the coast at Muller Bay. They are all practically 

 indistinguishable from the type, having been taken at the 

 same season. The original description therefore requires no 

 modification further than to add the measurements as taken 

 by the collector from the fresh specimens, as follows: 5 males, 

 total length, 361 (341-383 only one specimen above 365 

 and only one below 355); tail vertebrae, 94 (83-110); hind 

 foot, 59 (56-63); ear, 15.4 (14-16): 10 females, total length, 

 333 (3 I 4~3S 2 )' tail vertebras, 86 (78-94); hind foot, 56 (54- 

 57); ear, 13.7 (12-15). 



Spermophiles, says Mr. Anderson, were living at Heren- 

 deen Bay "in the dryer portions of a valley which extends 

 back from the head of the bay. In crossing from Portage 

 Bay to the Bering Sea side of the peninsula a number were 

 seen running about in the snow which then covered the 

 higher parts of the trail. They were taken later at Muller 

 Bay, where they had burrows in banks and hillsides." 



6. Marmota caligata (Eschscholtz) . HOARY MARMOT. 

 Seven skins and skulls and 3 additional skulls, Seldovia, July 



