aniericanus. ( Alces) 



americanus. (Bison) 



americanus. (Castor) 



americanus. (Cervus) 



americanus. (Lepus) 



273, 274,275, 276, 



americanus. (Manatus) 



americanus. (Odocoileus) 



americanus. (Parascalops) 



americanus. ( Peromyscus) 



123, 124, 128, 129, 



americanus. (Tamias) 



americanus. (L'rsus) 



americanus. (Zapus) 257, 



Ammonivs 



ammon. (Ovisi 



Ammospermophilus , . .82, 



amoenus. (Perognathus) 



amoenus. (Sorex) 



amoenus. (Tamias) 



amplus. (Perognathus) 



anarnacus. (Hyperoodon) 



anastasiae. I Peromyscus) 



anastasiae. ( Scalops) 



andersoni. (Monodon) 



angularis. (Thomomys) 



angustata. (Delphinapterus) 



angusticeps. (Blarinai 



angusticeps. ( Microtus) 



angusticeps. ■ (Neotoma c.) 



angustirostris. (Macrorhinus) .... 

 angustirostris. (Perognathus p.) . . . 



Anisonyx 102, 



Anisonyx rufa 



annectens. (Neotoma f.) 



annectens. (Spermophilus s.) 



anneleta. (Phoca) 



Anotus 



antarctica. (Balaena) 8, 



anthonyi. (Peromyscus) 



anthonyi. (Scapanus) 



anthonyi. (Sciurus g.) 



Antilocapra 



Antilocapra americana 



Autilocapridae 



Antilope americana 



Antrozous 



Antrozous pallidus 396, 



Antrozous p. pacificus 



apache. (Perognathus) 244, 



apache. (Sciurus) 



38 

 49 



116 



38 



277 



6 



39 



394 



313 



259 

 178 



46 



85 

 249 

 37« 



74 

 247 



16 

 128 

 39« 



19 

 228 



192 



162 

 359 



252 

 1 12 

 112 

 160 

 97 

 364 

 382 

 9 

 141 



393 



57 

 43 

 43 

 43 



43 

 396 



397 



397 

 245 

 58 



Page. 



apclla. (Microtus) 198 



aquaticus. (Lepus) 277, 278 



aquaticus. (Oryzomys) 146, 147 



aquaticus. (Scalops) 388, 389 



-aquilonius. (Fiber z.) 213 



Araeosciurus 50, 59 



araneus (Sorex 1 366 



arcticeps. (Onychomys) 121 



arcticus. (Lagenorhynchus) 25 



arcticus. (Lepus) 270 



arcticus. (Orcinus) 22 



arcticus. (Peromyscus t.) 131 



arcticus. (Putorius) 345. 346 



arcticus. (Rangifer) 37 



arcticus. (Trichechus) 358 



Arctocephalus 357 



Arctocephalus lobatus 356 



Arctogale 338, 343 



Arctomys 104 



Arctomys caligatus 106 



Arctomys dacota 106 



Arctomys tlaviventer 106, 427 



Arctomys f. avarus 427 



Arctomys ludovicianus 102 



Arctomys marmotta 104 



Arctomys melanopus 106 



Arctomys monax 105 



Arctomys m. canadensis 106 



Arctomys m. ignavus 105 



Arctomys olympus 107 



Arctomys pruinosus 106, 107 



arctus. ( Ursus) 309 



arenarius. (Geomys) 219 



arenaruis. (Peromyscus e.) 136 



arenarius. (Peromyscus s.). 142 



arenicola. (Onychomys t.> 122 



arenicola. (Perognathus p.) 246 



argentata. (Vulpes p.) 304 



arizonae. (Lepus) 280,285, 286 



arizonae. (Neotoma) 165 



arizonae. (Peromyscus a. 1 125 



arizonae. (Sigmodon h.) 144, 146 



arizonae. (Spilogale p.) 331 



arizonensis. (Cynomys) 104 



arizonensis. (Microtus m.) 184 



arizonensis. (Putorius) 348, 349 



arizonensis. (Reithrodontomysi... . 153 



arizonensis. (Sciurus) 59, 60 



armalus. (Perognathus) 254 



armatus. (Spermophilus) 93 



arquatus. (\'espertilio) 410 



