SORECID^ 253 



Length about 93 mm. (3.66 inches) ; tail vertebrae 35 

 (1.37); hind foot 11.5 (.45). 



Type locality, Walnut Creek, Contra Costa County, Cali- 

 fornia. 



Known only from- the region around San Francisco Bay, 

 and apparently rare. 



Sorex tenellus Murriam. 



INYO SHREW. 



Small; skmll flat and narrow; above ash gray; under parts 

 and feet white; tail dark above, white below. 



Length of type specimen 103 mm. 4.05 inches) ; tail verte- 

 brae 42 (1.65); hind foot 12.5 (.49). 



Type locality, Alabama Hills near Lone Pine, Inyo County, 

 California. 



Known only from the type locality. 



Sorex tenellus lyelli Merriam. 



MOUNT LYELL SHREW. 



Similar to tenellus in size, cranial characters, and general ap- 

 pearance; but upper parts slightly browner; tail darker; rostrum 

 and brain case not quite so flat; third unicuspid tooth larger 

 than the fourth. 



Type locality, Mount Lyell, Tuolumne County, California. 



Known only from the type locality. 



Sorex tenellus myops Merriam. 



WHITE MOUNTAIN SHREW. 



Similar to tenellus, but slightly smaller; paler; ears larger; 

 skull shorter and broader. 



Type locality. White Mountains, Mono County, California. 

 Known only fromi the type locality. 



