microtus. 245 



Mountain Meadow Vole. 



Type locality. Little Spring, San Francisco Mountain, Coconino 

 County, Arizona. Altitude, 8,200 feet. 



Geogr. Distr. San Francisco Mountain, at an altitude of 8,200 

 to 11,000 feet. 



a. Microttis nltieola leucophmus (Allen). 



Arvicola leucophceus! Allen, Bull. Am. Mus. Nat. Hist. N. Y., 1894, 



p. 320. 

 Microtus alticola leucophceus Elliot, Syn: N. Am. Mamm., F. C. M. 

 Pub., II, 1901, p. 192. Zool. Ser. 

 Graham Mountain Meadow Vole. 



Type locality. Graham Mountains, Graham County, Arizona. 

 Geogr. Distr. Known only from the type locality. 



591. Microtus mexicanus (Saussure). 



Arvicola (Hcmiotomys) mexicanus Sauss., Rev. Mag. Zool., ame 



S^r., XIII, 1861, p. 3. 

 Microtus mexicanus Elliot, Mamm. Middle Amer. & W, Indies, 

 F. C. M. Pub., IV, Pt. I, 1904, p. 301. Zool. Ser. 

 Mexican Meadow Vole. 



Type locality. Mount Orizaba, State of Puebla, Mexico. 

 Geogr. Distr. Eastern part of the State of Puebla, Mexico. Range 

 unknown. 



a. Microtics nie-vicanus pha'us (Merriam). 



Anyicola phosus! Merr., Proc. Biol. Soc. Wash., vii, 1892, p. 171. 



Microtus mexicanus phceus Elliot, Mamm. Middle Amer. & W. 

 Indies, F. C. M. Pub., iv, Pt. i, 1904, p. 302. Zool. Ser. 

 CoLiMA OR Dark Meadow Vole. 



Type locality. North slope of the Sierra Nevada de Colima, State 

 of Jalisco, Mexico. Altitude, 10,000 feet. 



Geogr. Distr. Known only from type locality. 



b. Microtus mexicanus guadalupensis Bailey. 



Microtus mexicanus guadalupensis Bailey, Proc. Biol. Soc. Wash., 

 XV, 1902, p. 118. 

 Guadalupe Mountains Meadow Vole. 



Type locality. Guadalupe Mountains, El Paso County, Texas. 

 Altitude, 7,800 feet. 



Genl. Char. Larger and lighter colored than M. mexicanus. 

 Skull long; nasals short, wide, posterior ends rounded; incisors dark 

 orange ; upper and middle molars like that of M. mogolloitensis, with 

 projecting inner point at base of posterior triangle. 



