250 MICROTUS. 



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

 F. C. M. Pub., IV, Pt. I, 1904, p. 303, fig. 52. Zool. Ser. 

 Jalapa Meadow Vole. 



Type locality. Jalapa, State of Vera Cruz, Mexico. 



Geogr. Distr. Central portions of the State of Vera Cruz, and 

 eastern part of State of Puebla, Mexico. Altitude, 4,600 to 5,000 

 feet. 



Subgenus E. Ghilotus. 



607. Microtus oregoni (Bachman). 



Aroicola oregoni Bachm., Joum. Acad. Nat. Scien. Phil'., 1839, 



p. 60, pi. I. 

 Microtus morosus Elliot, Pub. Field Columb. Mus., i, 1899, P- 227. 



Zool. Ser. 

 Microtus oregoni Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 



1901, p. 200, fig. 42. Zool. Ser. 

 Oregon Meadow Vole. 



Type locality. Astoria, Clatsop County, Oregon. 

 Geogr. Distr. Pacific coast region from northern California to 

 Puget Sound. 



608. Microtus serpens Merriam. 



Microtus serpens Merr., Proc. Biol. Soc. Wash., xi, 1897, p. 75. 

 Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 1901, p. 200. 

 Zool. Ser. 

 Creeping Meadow Vole. 



Type locality. Agassiz, British Columbia, Canada. 

 Geogr. Distr. Southern British Columbia and northern Wash- 

 ington, between the Cascade Mountains and Puget Sound. 



609. Microtus bairdi Merriam. 



Microtus bairdi Merr., Proc. Biol. Soc. Wash., xi, 1897, p. 74. 

 Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 1901, p. 200. 

 Zool. Ser. 

 Baird's Meadow V.ole. 



Type locality. Glacier Peak, Crater Lake, Klamath County, 

 Oregon. Altitude, 7,800 feet. 



Geogr. Distr. Known only from the type locality. 



Subgenus F. Arvicola. 



610. Microtus richardsoni (De Kay). 



An>icola richardsoni De Kay, Zool. N. York, Mamm., 1842, p. 91. 

 Microtus richardsoni Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 

 II, 1901, p. 200. Zool. Ser. 



