NORTH AMERICAN RECENT MAMMALS. 407 



=*=Microtus drummondii — Continued. 



Range. — From Hudson Bay to the west slope of the Rocky 

 Mountains and Alaska, and from the northern edge of the 

 United States, north to Fort Anderson, Mackenzie, in Canadian 

 and Hudsonian zones. 



Regarded by Hollieter (Canadian Alpine Journal, Special Number, p. 23, 

 February 17, 1913) as a subspecies of Microtus pennsylvanicus. 



*Microtus admiraltiae Heller. 



1909. Microtus admiraltise Heller, Univ. Calif. Publ. Zool., 



vol. 5, p. 256. February 18, 1909. 

 Type Locality. — Windfall Harbor, Admiralty Island, Alaska. 



t*Microtus aphorodemus Preble. 



1902. Microtus aphorodemus Preble, North Amer. Fauna, No. 



22, p. 52. October 31, 1902. 

 Type Locality. — Barren grounds about 50 miles south of Cape 



Eskimo, near mouth of Thlewiaza River, Keewatin, Canada. 



^Microtus aztecus (Allen). 



1893. Arvicola (Mynomes) aztecus Allen, Bull. Amer. Mus. Nat. 

 Hist., vol. 5, p. 73. April 28, 1893. 



1897. [Microtus] aztecus Trouessart, Catal. Mamm. viv. foss., 



p. 562. 

 Type Locality. — Aztec, San Juan County, New Mexico. 



Altitude, 5,900 feet. 

 Range. — Valley of the San Juan River in northwest New Mexico, 



in transition zone. 



*Microtus enixus Bangs. 



1896. Microtus enixus Bangs, Amer. Nat., vol. 30, p. 1051. 



December, 1896. 

 Type Locality. — Hamilton Inlet, Labrador, Canada. 

 Range. — Eastern coast of Labrador from Hamilton Inlet to 



Ungava Bay, in Hudsonian zone. 



*Microtus terraenovae (Bangs). 



1894. Arvicola terrxnovx Bangs, Proc. Biol. Soc, Washington, 

 vol. 9, p. 129. July 27, 1894. 



1896. 3I[icrotus] terrsenovse. Miller, North Amer. Fauna, No. 



12, p. 66. July 23, 1896. 

 Type Locality. — Codroy, Newfoundland. 

 Range. — Newfoundland and Penguin Island. 



t*Microtus breweri (Baird). 



1857. Arvicola hreweri Baird, Mamm. N. Amer., p. 525. 



1896. Microtus hreweri Miller, Proc. Boston Soc. Nat. Hist., 

 vol. 27, p. 83. June, 1896. 



Type Locality.— Muskeget Island, off Nantucket, Massachu- 

 setts. 



Range. — Muskeget Island. 



