276 BULLETIN 17 8, UNITED STATES NATIONAL MUSEUM 



fMicrotus ludovicianus Bailey. 



North Amer. Fauna 17 : 74, June 6, 1900. 

 96624. Skin and skull. Adult male. Iowa, Calcasieu Parish, La. 



April 7, 1899. Collected by Vernon Bailey, Original number 



6767. 



Well-made skin in good condition ; sliull Grade A. 



*Microtus macfarlani Merriam. 



Proc. Washington Acad. Sci. 2 : 24, Mar. 14, 1900. 



^^^•^ . Skin and skull. Fort Anderson, Anderson River, Mackenzie, 

 37347 



Canada. 1865. Collected by R. MacFarlane. Original number 

 3179. 



Specimen remade into a modern study sliin and the skull removed and 

 cleaned in March 1898. The skin is well preserved and in good condition 

 save for some apparent lengthwise stretching. Skull Grade A. 



f Arvicola (Mynomes) roacropus Merriam. 



North Amer. Fauna 5 : 60, July 30, 1891. 

 =Microtus richardsoni macropus (Merriam). See Bailey, North Amer. Fauna 



17 : 61, June 6, 1900. 

 23887 _ Skin and skull. Adult female. Pahsimeroi Mountains, alti- 



31291 



tude about 9,700 feet, Custer County, Idaho. September 16, 1890. 

 Collected by C. Hart Merriam and Vernon Bailey. Original num- 

 ber 1803. 



Well-made skin in good condition ; skull Grade A. 



fMicrotus macrurus Merriam. 



Proc. Acad. Nat. Sci. Philadelphia 50 : 353, Oct. 4, 1898. 

 =Microtn,s longicaudus macrurus Merriam. See Goldman, Journ. Mamm. 19: 

 491, Nov. 14, 1938. 



66151. Skin and skull. Adult female. Lake Cushman, Olympic 

 Mountains, Mason County, Wash, June 26, 1894. Collected by 

 C. P. Streator. Original number 3975. 



Well-made skin in good condition ; skull Grade B. 



fMicrotus mexicanus guadalupensis Bailey. 



Proc. Biol. Soc. Washington 15: 118, June 2, 1902. 

 109191. Skin and skull. Adult male. Guadalupe Mountains, alti- 

 tude 7,800 feet, El Paso County, Tex. August 21, 1901. Collected 

 by Vernon Bailey. Original number 7807. 

 Well-made skin in good condition ; skull Grade A. 



fMicrotus mexicanus hualpaiensis Goldman. 



Journ. Mamm. 19: 493, Nov. 14, 1938. 



