96 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
160. Thomomys uinta Merriam. 
1901. Thomomys uinta Merriam, Proc. biol. soc. Washing¬ 
ton, xi y, p. 112. July 19, 1901. 
Type locality.— Uinta Mountains, Summit County, Utah. 
Altitude, 10,000 feet. 
% 
Family HETEROMYIDAE. 
Genus MICRODIPODOPS Merriam. 
161. Micro dipod ops calif ornicus Merriam. 
1901. Microdipodops calif ornicus Merriam, Proc. biol. soc. 
Washington, xiv, p. 128. July 19, 1901. 
Type locality.— Sierra Valley, near Vinton, Plumas Coun¬ 
ty, California. 
162. Microdipodops megacephalus oregonus Merriam. 
1901. Microdipodops megacephalus oregonus Merriam, Proc. 
biol. soc. Washington, xiy, 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, xiy, 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 fallax pallidus Mearns. 
1901. Perognathus fallax pallidus Mearxs, Proc. biol. soc. 
Washington, xiy, 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. 
