MURIDjE 129 



They did not appear to chew the leaves much, but munched them 

 down rapidly. 



Their ears appeared rather prominent, considering the length 

 of the surrounding pelage. The eyes were very prominent, like 

 black beads, and had a staring expression. By nine o'clock they 

 disappeared. 



Microtus calif omicus vallicola Bailey. (Of the valley.) 



VALLEY MEADOW MOUSE. 



Very similar to calif omicus; averaging larger and grayer. 

 Type locality, Lone Pine, Inyo County, California. 

 Marshy and grassy places in Owen Valley and the Mojave 

 Desert west of Death Valley. 



Microtus calif omicus constrictus Bailey. 

 (Drawn together.) 



COAST MEADOW MOUSE. 



Averaging smaller and grayer than calif ornicus; skull nar- 

 rower ; audital bullae narrower ; above buffy gray ; below whitish ; 

 tail scarcely bicolor, dull grayish. 



Type locality, Mendocino County, California. 



Common on grassy hillsides and' in pastures in the region 

 along the coast near Cape Mendocino. 



Microtus edax Le Conte. (Voracious.) 



TULLE MEADOW MOUSE. 



Skull long, angular, heavily ridged; pelage blacker than in 

 calif ornicus; sides more grayish; feet large and stout. 



Length about 215 mm. (8.45 inches;) tail vertebrae 70 

 2.75); hind foot 25 (i). 



Type locality, near San Francisco, California. 



Tulle swamps of the Sacramento and San Joaquin Valleys, 

 California. 



