302 MICROTUS. 
a.—pheus (Arvicola), Merr., Proc. Biol. Soc. Wash., vil, 1892, 
Dp. 17a; 
Dark MeEapow VOLE. 
Type locality. North slope of Sierra Nevada de Colima, State of 
Jalisco, Mexico. Altitude, 10,000 feet. 
Geogr. 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 drab; tail above sooty, beneath paler. 
Measurements. Total length, 155; tail vertebre, 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. 
MAT) M4 Vf Hy) 
Fic. XLV. MIcROTUS C. HYPERYTHRUS. 
REDDISH MEADOW VOLE. 
californicus hyperythrus (Microtus), Eliot, Pub. Field Columb. 
Mus., Ill, 1903, p. 161. Zodlogy. 
ReppisH Meapow 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. californicus; hind 
foot longer, and tail about equal to that of M. californicus. 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 vertebre, 52; hind foot, 
24.5; ear, 16. Skull: occipito-nasal length, 31; Hensel, 26; zygo- 
