10(5 CALIFORNIA MAMMALS. 



Peromyscus oreas rubidus Osgood. (A mountain 

 nymph; red.) 



MENDOCINO MOUSE. 



"Upper parts brownish fawn with an evident median dorsal 

 line; sides brownish fawn; ears lightly edged with whitish; under 

 parts white; tail sharply bicolor." 



Length about 193 mm. (7.62 inches) ; tail vertebrae 96 

 (3.80) ; hind foot 21.5 (.85). 



Type locality, Mendocino City, Mendocino County, Califor- 

 nia. 



"Coast region of northern California and southern Oregon, 

 south at least to Cazadero, California." 



Peromyscus boylii Baird. (For Dr. C. C. Boyle.) 



BOYLE MOUSE. 



Size medium; tail longer than the head and body; ears of 

 moderate size; above varying from bistre mixed with blackish 

 to mouse gray, the bistre specimens having the sides of head and 

 sides of body strongly tinged with wood brown, the gray ones 

 with very little reddisJi on the sides; tail bicolor, dusky above 

 whitish below. Immature; slate gray above; pale ashy below. 



Length about 195 mm. (7-7o inches) ; tail vertebrae 105 

 (4.15); hind foot 22 (.86) ; ear from^ crown 19 (.75). 



Type locality, Middle Fork of American River, El Dorado 

 County, California. 



Boyle Mice are found in many parts of California, principally 

 in the mountains, seldom occurring in the valleys. They are not 

 often plentiful, and are occasionally found in houses and barns. 

 They appear to be a brush loving species. 



Peromyscus truei Shufijldt. (For F. W. True of the 

 National Museum.) 



BIG-EARED MOUSE. 



Similar in colors to boylii and calif ornicus, but' averaging 



