809 



MICROTUS. 



a. phceus (Arvicola), Merr., Proc. Biol. Soc. Wash., vn, 1892, 



p. 171. 

 DARK MEADOW VOLE. 



Type locality. North slope of Sierra Nevada de Colirna, State of 

 Jalisco, Mexico. Altitude, 10,000 feet. 



Gcogr. Distr. State of Jalisco, Mexico. High mountains. 



Genl. Char. Size medium. Skull similar to that of M. mogollo- 

 nensis. 



Color. Above bistre and black; under parts plumbeous, tinged 

 with dfab; tail above sooty, beneath paler. 



Measurements. Total length, 155; tail vertebrae, 34; hind foot, 

 20.5; ear, 14. Skull: basal length, 25.2; zygomatic width, 15.5; 

 mastoid breadth, 12; length of nasals, 7.3; length of upper molar 

 series, alveolar border, 6.08. 



FIG. XLV. MICROTUS c. HYPERYTHRUS. 

 REDDISH MEADOW VOLE. 



californicus hyperythrus (Microtus), Elliot, Pub. Field Columb. 



Mus., in, 1903, p. 161. Zoology. 

 REDDISH MEADOW VOLE. 



Type locality. San Quentin, Lower California. 



Geogr. Distr. Sea-coast in the vicinity of San Quentin, up to 

 8,000 feet elevation in the San Pedro Martir Mountains, Lower Cali- 

 fornia, Mexico. 



Genl. Char. More reddish in color than M. calif ornicus ; hind 

 foot longer, and tail about equal to that of M. calif ornicus. Skull 

 much larger. 



Color. Upper parts dark tawny, slightly lined with black; sides 

 paler; entire under parts plumbeous faintly washed with white; 

 hands and feet grayish buff; tail above dusky, beneath paler. 



Measurements. Total length, 203; tail vertebrae, 52; hind foot, 

 24.5; ear, 16. Skull: occipito-nasal length, 31; Hensel, 26; zygo- 



