118 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



Microtus aztecus (Allen) . 



1893. Arvicola (Munomes) aztecus ALLEN, Bull. Amer. mus. 

 nat. hist., v, p. 73. April 28, 1893. 



1897. [Microtus] aztecus TROUESSART, Catal. mamm., pt. in, 

 p. 562. 



TYPE LOCALITY. Aztec, San Juan County, New Mexico. 

 Altitude, 5900 feet. 



Microtus enixus Bangs. 



1896. Microtus enixus BANGS, Amer. nat., xxx, p. 1051. 



December 5, 1896. 

 TYPE LOCALITY. Hamilton Inlet, Labrador. 



Microtus terraenovae (Bangs). 



1894. Arvicola terraenovae BANGS, Proc. biol. soc. Washing- 

 ton, ix, p. 129. July 27, 1894. 



1896. M[icrotus] terraenovae MILLER, North Amer. fauna, 



no. 12, p. 66. July 23, 1896. 

 TYPE LOCALITY. Codroy, Newfoundland. 



Microtus breweri (Baird) . 



1857. Arvicola breweri BAIRD, Mamm. N. Amer., p. 525. 



1896. Microtus breweri MILLER, Proc. Boston soc. nat. hist, 

 xxvii, p. 83. June, 1896. 



TYPE LOCALITY. Muskeget Island, off Nantucket, Massachu- 

 setts. 



Microtus nesophilus Bailey. 



1898. Microtus insularis BAILEY, Proc. biol. soc. Washington, 

 xii, p. 86. April 30, 1897 (not of Nilsson). 



1898. Microtus nesophilus BAILEY, Science, n. s., vm, p. 783. 



December 2, 1898. 

 TYPE LOCALITY.- Great Gull Island, off eastern extremity of 



Long Island, Suffolk County, New York. 



Microtus montanus (Peale). 



1848. Arvicola montana PEALE, U. S. explor. exp., vin, 

 mamm. and ornith., p. 44. 



1897. [Microtus'] montanus TROUESSART, Catal. mamm., pt. 

 in, p. 563. 



TYPE LOCALITY. Headwaters of the Sacramento River, near 

 Mount Shasta, Siskiyou County, California. 



