1904.] NATURAL SCIENCES OF PHILADELPHIA. 587 



Microtus californicus (Peale). 



A series from Berkeley. 



Lepus bachmani Waterhouse. 



A number of specimens from Berkeley and^^Belmont. 



Lepus floridanus audubonii (Baird). 



Two specimens. Belmont, November 28, and Berkeley, August 27. 



Lepus californicus Gray. 



Belmont, November 26. 



Dipodomys californicus Merriam. 

 Belmont, April 2. 



Reithrodontomys longicauda (Baird). 



Berkeley; a series. 



Thomomys bottae CEyd. and Gerv.). 



A series; Berkeley. 



Sorex californicus Merriam. 



One specimen. Berkeley, December 19. 



Sorex montereyensis Merriam 



Several from Berkeley, 



Scapanus californicus Ayres. 



Several from Berkeley and San Francisco. 



Antrozous pallidus pacificus Merriam. 



Berkeley, September 17. 



Myotis evotis (H. Allen). 



Belmont, November 4. 

 Lasiurus cinereus (Beauv.). 



A pair. Berkeley, April 2. 

 Nyctinomus cynooephalus californicus (H. Allen;. 



A series. Belmont. These specimens have the forearm considerably 

 longer than in the Eastern cynocephalus , and differ appreciably in 

 color, though the latter is rather uncertain as few skins of cynocephalvs 

 are available for comparison. A skin of cynocephalus appears decidedly 

 brownish when compared with californicus; the upper parts are mummy 

 brown against seal brown ^^-ith a grayish suffusion in californicus, the 

 under parts are raw umber compared with sepia suffused with ashy 

 gray in californicus. 



The relationship with N. mexicanus (Saussure) it is not possible to 

 ascertain, as too little material is available. 



