MILLER AND REHN: NORTH AMERICAN MAMMALS. 91 
Genus MICROTUS Sckrank. 
126. 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 Tblewiaza River, Keewatin, 
Canada. 
127. Microtus pennsylvanicus shattucki Howe. 
1901. Microtus pennsilvanicus shattucki Howe, Proc. Port¬ 
land soc. nat. hist., n, p. 201. December 31, 1901. 
Type locality.— Tumble Down Dick Island, near Long 
Island, Penobscot Bay, Maine. 
128. Microtus mexicanus guadalupensis Bailey. 
1902. Microtus mexicanus guadalupensis Bailey, Proc. biol. 
soc. Washington, xv, p. 118. June 2, 1902. 
Type locality.— Guadalupe Mountains, El Paso County, 
Texas. Altitude, 7800 feet. 
129. Microtus miurus Osgood. 
1901. Microtus miurus Osgood, North Amer. fauna, no. 21, 
p. 64. September 26, 1901. 
Type locality. — Head of Bear Creek, in mountains near 
Hope City, Turnagain Arm, Cook Inlet, Alaska. 
Genus FIBER Cuvier. 
130. Fiber zibethicus hudsonius Preble. 
1902. Fiber zibethicus hudsonius Preble, North Amer. 
fauna, no. 22, p. 53. October 31, 1902. 
Type locality.— Fort Churchill, Keewatin, Canada. 
131. Fiber zibethicus ripensis Bailey. 
1902. Fiber zibethicus ripensis Bailey, Proc. biol. soc. 
Washington, xv, p. 119. June 2, 1902. 
Type locality. — Pecos River at Carlsbad, formerly Eddy, 
Eddy County, New Mexico. 
