96 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



160. Thomomys uinta Merriam. 



1901. Thomomys uinta Merriam, Proc. biol. soc. Washing- 

 ton, xiv, p. 112. July 19, 1901. 

 Type locality. — Uinta Mountains, Summit County, Utah. 

 Altitude, 10.000 feet. 



Family HETEROMYIDAE 



Genus MICRODIPODOPS Merriam. 



161. Microdipodops californicus Merriam. 



1901. Microdipodops californicus Merriam, Proc*. biol. soc. 



Washington, xiv, p. 128. July 19, 1901. 

 Type locality. — Sierra Valley, near Vinton, Plumas Coun- 

 ty, California. 



1(52. Microdipodops megacephalus oregonus Merriam. 



1901. Microdipodops megacephalus oregonus Merriam, Proc. 



biol. soc. Washington, xiv, p. 127. July 19, 1901. 

 Type locality. — Lake Alvord, Alvord Desert, Harney 

 County, Oregon. 



163. Microdipodops pallidus Merriam. 



1901. Microdipodops pallidus Merriam, Proc. biol. soc. Wash- 

 ington, xiv, p. 127. July 19, 1901. 



Type locality. — Ten miles east of Stillwater, near sink of 

 the Humboldt and Carson, Churchill County, Nevada. 



Genus PEROGNATHUS Wied. 



164. Perognathus fall ax pallidus Mearns. 



1901. Perognathus fallax pallidus Mearxs, Proc. biol. soc. 



Washington, xiv, p. 135. August 9, 1901. 

 Type locality. — Mountain Spring, half-way up the east slope 



of the Coast Range Mountains, on the Mexican Boundary 



Line, San Diego County, California. 



