130 JM&tms Nwr Pocketmoiwe from Ctil(f<trnin. 



tfubupecific character*. Size and cranial characters exactly like those 

 of Peroffnathw fattax fattax. Pelage light gray (No. of Ridgway's 

 color manual) at base instead of dark gray (No. 6, Ridgway), and the 

 general effect pale broccoli -brown instead of bistre above, where it is 

 much more lightly mixed with black than in falla.r; tail-stripe drab in 

 stead of hair-brown; lateral line and subterminal /one of hairs of up- 

 perparts pale pinkish bull: feet and underparts creamy white: ears 

 with a few white hairs anteriorly. Young, pale smoke-gray above. 



M?a*u.rement. Average of six adult females from the east slope and 

 notch at summit of Coast Range Mountains, near the Mexican boundary 

 (Mountain Spring to Jacumba): length, 195 mm. (188-21)6); caudal ver 

 tebra, 107 (08-112); hind foot, 24.2 (251.7-2")): ear from crown, 6.9(6.5-7). 



Distribution. Specimens have been examined from San .lac in to Lake, 

 Riverside County, California: San Felipe Canyon, Mountain Spring, 

 wagon-pass at sumrnjt of Coast Range, and Jacumba Hot Springs, in 

 San Diego County, California and Lower California. 



Acknowledgments. 1 am indebted to the authorities of the United 

 States National Museum and the Biological Survey of the Department 

 of Agriculture for the use of the required materials, and to Mr. Wilfred 

 II. Osgood for assistance in studying the group. 



