126 CALIFORNIA MAMMALS. 



Subgenus Microtus. 

 Pelage long and rather coarse; soles with six tubercles; 

 pattern of enamel folds of third lower molar without closed 

 triangles ; third upper molar with three closed triangles and seven 

 or eight salient angles. 



Microtus montanus Pkale. (Of the mountain.) 



PEALE MEADOW MOUSE. 



Nasals small, short, not projecting as far forward as the 

 premaxillaries do ; incisive foramina constricted posteriorly ; pelage 

 soft ; above sepia mixed with black ; belovi- slate gray washed witli 

 white; tail scarcely one third as long as head and body, black- 

 ish above, lighter below ; feet dull brown. 



Length about 165 mm. (6.50 inches) ; tail vertebrae 50 

 (2); hind foot 21 (.82); ear from crown 10 (.40). 



T'ype locality, Sacramento River near Mount Shasta. 



Peale Meadow-Mice inhabit meadows and marshes of the 

 foothills and lower mountain sides of northeastern California, 

 eastern Oiregon, northern Nevada and Utah. They do not seem 

 to be common. 



Microtus dutcheri Bailey. (For B. H. Butcher.) 



DUTCHER MEADOW MOUSE. 



Similar to montanus in color ; lips and usually tip of nose 

 white; tail short; ears small, nearly concealed; nasals small and 

 short; above sepia mixed with brown and black; below buffy 

 brown (adult) or grayish (immature); tail bicolor, blackish 

 above, whitish below. 



Length about 163 mm. (6.40 inches) ; tail vertebrae 37 

 (1.45) ; hind foot 21 (.82). 



Type locality, Big Cottonwood Meadows, 10,000 alt., near 

 Mount Whitney, California. 



Butcher Meadow-Mice inhabit the wet valleys of the Sierra 

 Nevada, from the head of Owen River southward, between 7,000 



