130 CALIFORNIA MAMMAUS. 



Microtus scirpensis Bmlry. (Of the tulles, Scirpus.) 



DESERT MEADOW MOUSE. 



Similar to edax in size, proportions and skull; pelage grayer. 



Known only, from a little tulle patch at a warm spring, near 

 the Amargosa River, Inyo County, California, below the Nevada- 

 California boundary. 



Microtus mordax Merriam. (Biting.) 



CANTANKEROUS MEADOW MOUSE. 



Pelage very coarse; color light; above pale bistre grizzled 

 with gray and black; below whitish, the plumbeous underfur 

 showing through; tail indistinctly bicolor, brownish above, below 

 light gray. 



Length about i8o mm. (7.10 inches) ; tail vertebras 64 

 (2.50) ; hind foot 22 (.87) j ear from crown 14 (.55). 



Type locality. Sawtooth Lake, Idaho. 



From the Rocky Mountains through the ranges of the Great 

 Basin to the Sierra Nevada, Mount Shasta and Trinity Moun- 

 tains, south tO' the San Bernardino and San Jacinto Mountains. 

 In California they are found only in high mountains, from 5,000 

 feet alt., in the northern part of the State and 7,000 feet in the 

 southern part, up nearly to timber line. 



Microtus angusticeps Bailey. ( Short— head. ) 



BAILEY MEADOW MOUSE. 



Above dark bistre mixed with black, darkest on face; be- 

 low washed with creamy white; feet plumbeous gray; tail dis- 

 tinctly bicolor, blackish above, soiled white below; pelage coarse; 

 skull small, narrow; audital bulL-e small; molars small, with 

 narrow, sharp angles. 



, Length about 170 mm. (6.70 inches); tail vertebrje 55 

 (2.15J; hind foot 22 (.87). 



,, Type locality. Crescent City, .California. 

 Bailey Meadow-Mice occur in the damp pastures in ,the 



