1904.] NATURAL SCIENCES OF PHILADELPHIA. 577 



of the mountain is mostly covered with low snow-crushed spiny brush, 

 while White-barked Firs grow on the north side." 



The specimens were collected on two trips made in 1897 and 1899, 

 during the months of May, June and July. 



MAMMALS. 



Twenty-one species of mammals were secured by Mr. Bunnell, 

 and eleven others are reported by him as occurring in the vicinity. For 

 the identification of the bats I am indebted to Mr. J. A. G. Rehn, while 

 Mr. W. H. Osgood has kindly examined several of the other species and 

 compared them with specimens in the collection of the U. S. Biological 

 Survey. Species reported by Mr. Bunnell but not represented in the 

 series are marked with an asterisk. 



Citellus graminiirus douglasii (Richardson). Columbian Spermophile. 



Two males. June 11 and July 14. Central shoulder patch jet black, 

 and sides very bright silvery gray. 



Eutamias hindsi (Gray). Hinds' Chipmunk. 



A male and female, May 30 and June 28, are in the dull pelage, but 

 another pair secured July 8 have patches of bright rusty hairs cropping 

 out on the back and sides. 



Sciurus douglasii albolimbatus Allen. Sierran Chickaree. 



One female example, June 30, which seems absolutely identical with 

 central Sierra specimens and shows no tendency toward moUipilosus 

 of the redwood belt. 



Sciurus griseus Ord. Oregon Gray Squirrel. 



Six specimens, June 1 to July 24. 

 Reithrodontomys longicauda (Baird). 



One specimen, a female, June 11. ^leasurements as follows: Length 

 115 mm., tail 37 (partly lost), hind foot 19, ear 15. Apparently identi- 

 cal with Berkeley specimens. 

 Peromyscus gambelii (Baird). White-footed Mouse. 



Represented by a full series of specimens. 



Peromyscus truei (Shufeldt). Big-eared Mouse. 



Four adults in tawny pelage, May 29 to June 14; two probably 

 younger, June 13 and 14, much less tawny, and five young, May 29- 

 June 14, in mouse gray pelage, some of them with buff patches on the 

 sides, showing the molt into the preceding stage. 



I was at first inclined to think that some of these were P. boylii, but 

 comparison with specimens of the latter, kindly loaned by Mr. D. G. 

 37 



