408 BULLETIN 128, UNITED STATES NATIONAL MUSEUM. 



t*Microtus nesophilus Bailey. 



1898. Microtus insularis Bailey, Proc. Biol. Soc. Washington, 



vol. 12, p. 88. April 30, 1898. (Not of Nilsson, 1844.) 

 1898. Microtus nesophilus Bailey, Science, n. s., vol. 8, p. 783. 



December 2, 1898. (Substitute for insularis Bailey.) 

 Type Locality. — Great Gull Island, off eastern extremity of 



Long Island, Suffolk County, New York. 

 Range. — Great Gull Island, at entrance to Long Island Sound. 



mo7itanus-gro\ij). 



*Microtus montanus montanus (Peale). 



1848. Arvicola montana Peale, U. S. Explor. Exp., vol. 8, 

 mamm. and ornith., p. 44. 



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

 p. 563. 



Type Locality. — Headwaters of the Sacramento River, near 



Mount Shasta, Siskiyou County, California. 

 Range. — Northeastern California, eastern Oregon, northern 



Utah, and Nevada, in the upper Sonoran and transition zones. 



*Microtus montanus yosemite Grhinell. 



1914. Microtus montanus yosemite Grinnell, Proc. Biol. Soc. 



Washington, vol. 27, p. 207. October 31, 1914. 

 Type Locality. — Yosemite Valley, Mariposa County, Califor- 

 nia. Altitude, 4,000 feet. 



t*Microtus montanus caryi Bailey. 



1917. Microtus montanus caryi Bailey, Proc. Biol. Soc. Wash- 



uigton, vol. 30, p. 29. February 21, 1917. 

 Type Locality. — Milford, Fremont County, Wyoming. 



t*Microtus montanus arizonensis Bailey. 



1898. Microtus montanus arizonensis Bailey, Proc. Biol. Soc. 

 Washington, vol. 12, p. 88. April 30, 1898. 



Type Locality. — Springerville, Apache County, Arizona. 

 Range. — ^Plateau country of eastern Arizona, at head of Little 

 Colorado, in the transition zone. 



t*Microtus montanus rivularis (Bailey). 



1898. Microtus nevadensis rivularis Bailey, Proc. Biol. Soc, 



Washington, vol. 12, p. 87. April 30, 1898. 

 1900. Microtus montanus rivularis Bailey, North Amer. Faima, 



No. 17, p. 29. June 6, 1900. 

 Type Locality. — St. George, Washington County, Utah. 

 Range. — luiown only from type locality; probably restricted to 



lower Sonoran zone. 



