166 



CALIFORNIA MAMMALS. 



part of IModoc County, California, and Mono Lake. I have one 

 that I caught at Mono Lake in a sandy flat. While this is a wide- 

 spread subspecies it does not seem to be very common anywhere. 

 It seems to be an inhabitant of valle}-s and plains. 



Perognathus parvus magruderensis Osgood. (Of 

 Mount ^lagruder. ) 



MOUNT MAGRUDER POCKET-MOUSE. 



Ver\- similar to olivaceous; larger; skull larger and heavier; 

 interparietal relatively narrower. 



Length about 192 mm. (7.60 inches) : tail vertebrae 102 

 (4) ; hind foot 24 (.95). 



Type locality, Mount Magruder, Nevada, at 8.000 feet al- 

 titude ; higher parts of the mountain ranges of Lhe desert region 

 of eastern California and Nevada, grading into olivaceous at 

 their bases. 



Perognathus alticola Rhoads. (A dweller on the 

 heights.) 



WHITE-EARED POCKET-MOUSE. 



Above ochraceous buff thickly mixed with black; sides 

 scarcely lighter than back; lateral buff line narrow and indistinct; 

 black crescent at base of whiskers obsolete; ears and tail white; 

 skull ven,' similar to that of olivaceous. 



Length about 165 mm. (6.50 inches) ; tail vertebrae 84 

 (3.30); hind foot 22 (.87). 



Type locality. Squirrel Inn. San Bernardino Mts.. Califor- 

 nia. 



The half dozen known examples of the ^^'hite-eared Pocket- 

 ]Mouse have been taken in a small area in the mountains north of 

 the town of San Bernardino, in open pine forest at 5.000 feet 

 altitude or a little higher. They are not common or more would 

 have been found with the amount of trapping that has been done 



