MILLER AND REHN: NORTH AMERICAN MAMMALS. 313 



arcticus (Lepus), 179. 

 arcticus (Peromyscus), 84. 

 arcticus (Putorius), 222. 

 arcticus (Rangifer), 19. 

 arcticus (Sorex), 230. 

 Arctocephalus, 192. 



townsendi, 192. 



ursinus, 192. 

 Arctogale, 222, 224. 

 Arctomys, 58. 



avarus, 59. 



beecheyi, 50. 



bobac, 58. 



cauadensis, 59. 



citellus, 58. 



columbianus, 48. 



dacota, 58. 



douglasii, 50. 



empetra, 58. 



flaviventer, 58. 



franklinii, 49. 



ignavus, 59. 



lewisii, 58. 



ludovicianus, 57, 58. 



marmota, 58. 



monax, 59. 



olympus, 59. 



phaeognatha, 49. 



pruinosus, 59. 



richardsonii, 54. 

 Arctopithecus castaneiceps, 8. 

 arctos (Ursus), 232. 

 arenacea (Neotoma), 101. 

 arenarius (Geomys), 137. 

 arenarius (Perognathus), 161. 

 arenarius (Peromyscus), 73, 83. 

 arenicola (Onychomys), 67. 

 arenicola (Perognathus), 157. 

 argentatus (Scalops), 249. 

 aries (Ovis), 22. 

 arizonae (Lepus), 184. 

 arizonae (Neotoma), 101, 106. 

 arizonae (Peromyscus), 84. 

 arizonae (Sigmodon), 90. 

 arizonae (Sitornys), 84. 

 arizonae (Spilogale), 216. 

 arizonensis (Cynomys), 57. 

 arizonensis (Microtus), 119. 

 arizonensis (Putorius), 224. 

 arizonensis. (Reithrodontomys), 96. 

 arizonensis (Sciurus), 36. 

 armata (Loncheres), 170. 

 armatus (Loncheres), 169, 170. 

 armatus (Nelomys), 169. 

 armatus (Perognathus), 306. 

 armatus (Spermophilus), 46. 

 artemisiae (Peromyscus), 84. 

 artemisiae (Sitomys), 84. 

 Artibeus, 288, 289, 290. 



Artibeus achradophilus, 291. 



cinereus, 290. 



coryi, 288. 



intermedius, 289. 



jamaicensis, 288. 



perspicillatus, 289. 



vittatus, 290. 

 Artiodactyla, 12. 

 artus (Perognathus), 162. 

 arvalis (Mus), 116. 

 Arvicola, 124, 304. 



alticolus, 123. 



amphibius, 124. 



austerus, 128. 



aztecus, 118. 



borealis, 116. 



breweri, 118. 



californica, 120. 



chrotorrhinus, 124. 



curtata, 126. 



curtatus, 126. 



drummondi, 117. 



drummondii, 117. 



edax, 120. 



gapperi, 113. 



haydeni, 128. 



insperatus, 303. 



leucophaeus, 123. 



longicaudus, 122. 



macropus, 125. 



mexicanus, 123. 



rnicrocephalus, 303. 



minor, 129. 



modesta, 117. 



mogollonensis, 123. 



montana, 118. 



mordax, 122. 



nanus, 119. 



nuttalli, 81. 



operarius, 120. 



oregoni, 127. 



Oregon us, 127. 



pallidus, 127. 



pauperrima, 127. 



phaeus, 123. 



pinetorum, 125. 



quasiater, 126. 



richardsoni, 124. 



riparius, 116. 



scalopsoides, 125. 



terraenovae, 118. 



tetramerus, 122, 302. 



texiana, 91. 



townsendi, 122. 



townsendii, 121. 



trimucronata, 134. 



xanthognatha, 124. 



xanthognathus, 124. 

 Arvicolidae, 24. 



