microtus. 291 



Dwarf Meadow Vole. 



1-16. Adult 6" P. Nederland, Colorado. R. T. Young. 

 17-30. Adult 9 P. Nederland, Colorado. R. T. Young. 

 31-32. Adult cJ* P. Eldora, Colorado. R. T. Young. 

 33-35. Adult ? P. Eldora, Colorado. R. T. Young. 



a. Microtus nanus canescens Bailey. 



Microtus nanus canescens Bailey, Proc. Biol. Soc. Wash., xii, 

 1898, p. 87. Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 

 1901, p. 185. Zool. Ser. Id. Check-L. Mamm. N. Amer. Cont. 

 & W. Indies, F. C. M. Pub., vi, 1905, p. 239. Zool. Ser. 

 Gray Meadow Vole. 



I. Adult cJ* P. Cariboo, British Columbia, Canada. C. K. Worth- 

 ern. 



484. Microtus canicaudus Miller. 



Microtus canicaudus Miller, Proc. Biol. Soc. Wash., xi, 1897, p. 

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

 185. Zool. Ser. Id. Check-L. Mamm. N. Amer. Cont. & W. 

 Indies, F. C, M. Pub., vi, 1905, p. 239. Zool. Ser. 

 Gray-tailed Meadow Vole. 



1-6. Adult cJ^ Topotypes. Coll. McCoy, Polk County, Oregon. 

 E. Heller. 

 7. Adult 9 Coll. Beaverton, Oregon. E. Heller. 



485. Microtus dutcheri Bailev. 



Microtus dutcheri Bailey, Proc. Biol. Soc. Wash., xii, 1898, p. 85. 

 Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 1901, p. 185. 

 Zool. Ser. Id. Check-L. Mamm. N. Anier. Cont. & W. Indies, 

 F. C. M. Pub., VI, 1905, p. 239. Zool. Ser. 

 Butcher's Meadow Vole. 



1-3. Adult c? Coll. Whitney Creek, Mt. Whitney, California. 

 E. Heller. 

 4. Juv. c^ Coll. Whitney Creek, Mt. Whitney, California. 

 E. Heller. 

 5-16. Adult $ Coll. Whitney Creek, Mt. Whitney, California. 

 E. Heller. 

 17-20. Adult d^ Coll. Whitney Meadows, Mt. Whitney, Califor- 

 nia. E. Heller 

 21-28. Adult 9 Coll. Whitney Meadows, Mt. Whitney, Califor- 

 nia. E. Heller. 

 29-31. Adult cJ^ Topotypes. Coll. Big Cottonwood Meadows, Mt. 



Whitne}^ California. E. Heller. 

 32-35. Adult 9 Topotypes. Coll. Big Cottonwood Meadows, Mt. 

 Whitney, California. E. Heller. 



