586 PROCEEDINGS OF THE ACADEMY OF [July, 



NOTES ON A COLLECTION OF CALIFORNIAN MAMMALS. 



BY WITMER STOXE. 



The following list of mammals, obtained by Mr. A. S. Bunnell in the 

 neighborhood of Berkeley and in the Sierras, and now forming part of 

 the collection of the Academy of Natural Sciences of Philadelphia, is 

 published as a contribution toward our knowledge of the distribution 

 of the various species and subspecies. The bats have been studied and 

 identified by Mr. J. A. G. Rehn. 



Berkeley Collectiox. 



Citellus grammurus beecheyi (Rich.). 

 A series from Berkeley. 



Neotoma fuscipes Baird. 



A number of specimens from Berkeley; two have partly bicolor 

 tails and the color of the adults varies considerably, some being 

 much redder than others. In view of this individual variation it 

 would seem that the N. fuscipes affinis of Elliot and probably some of 

 the other races recently proposed will, with .V. monochroura of Rhoads, 

 be eventually relegated to synonymy. 



Peromyscus gambelii (Baird). 

 A series from Berkeley. 



Peromyscus californicus (.Gambel). 



A number from Berkeley. Through the kindness of Mr. D. G. Elliot 

 I have received from the Field Columbian ]\Iuseum topotypes of his 

 P. dyselius and certain other specimens, including P. hoylii, for compari- 

 son with the above series. The result is that I find in the Berkeley 

 lot typical specimens of both P. californicus and dyselius and others 

 that appear to be ecpially referal^le to either, and my conclusion is 

 that the latter form is leased upon younger or smaller examples of 

 californicus. Rhoads' P. major is likewise a synonym of californicus, 

 as shown conclusively by a comparison of the types in the Academy 

 collection. Mr. Bunnell got no specimens of P. hoylii at Berkeley — 

 that is, none of the form so identified by ^Ir. Elliot {Field Col. Mus. 

 Puhl, Zool. Ser., I, No. 10, p. 206). 



