Paue. 



224 

 239 



'riiimiomys nevadensis 



Thomoniys operarius 



rhomoinys o. pallescens 



rhoniomys perpalliilus 



rhommiiys quadratus 



Thomomys rufesccns 221 



Tliomomys talpoides 227 



Thomomys t. rufescens 227 



Thomomys townsendi 224 



Thonioinys umbrinus 227 



thysanodes. (Myotise.i 401, 406 



timidus. (Lepus) 2f)9, 2/1 



tornillo. (Peromyscus) 125 



torridus. (Onychomys). . . . 121, 122, 123 



townsendi. (Corynorhinus m.) ..399, 400 



townsendi. (Microtus) 190 



townsendi. (Scapanus) 39ii 392 



townsendi. (Spermophilus) . . . .92, 94 



townsendi. (Spermopliilus r.) 94 



townsendi. (Tamias) 69 



townsendi. (Thomomys) 224 



townsendi. lUrocyonc.) 309 



transitionalis. (Lcpus f.) 281 



Iricheclius 358 



Trichechus arcticus 358 



Triclieihus cookii 358 



Trichechus diveri;ens 358 



Trichechus manatus 6 



Trichechus obesus 358 



Trichechus rosmarus 358 



Trichecidae 357 



trideccndineatus. (Spcrmophihis) . 



99, 100, lOI 



trimucronatus. iLemmus) 207, 208 



Trinodontomys 123 



trinotatus. (Zapus) 261,262, 263 



trowbridgei. (Lepus) 281 



trowbridj;ei. (Microtust 186 



trowbridgei. (.Sorex) 373 



trUL-i. (Peromyscus) 139 



Iruei. (Scapanus) 393 



truei. (.Synaptomys) 206, 207 



truncatus. (Tursiopst 29 



tschukschorum. (Lopus) 271, 272 



tundrensis. (Sorcx) 368 



Tursio • 4. 28, 29 



tursio. (Delphinus) 28 



tursio. (Tursiops) 29 



Tursiops 28 



Tursiops communis 29 



Tursiops compressicauda 29 



Tursiops cymodice 29 



Tursiops eurynonic 29 



Tursiops gilli 29 



Tursiops metis 2<) 



Tursiops" truncatus 29 



Tursiops tursio 29 



tuza. (Geomys) 215,216, 217 



ubericolor. (Lepus f.) 



umbrinus. 1 Peromyscus c.) 



umbrinus. (Tamias) 



umbrinus. (Thomomys) 



unalascensis. (Dicrostonyx h.i .... 



unalascensis. (Microtus 1 188, 



ungava. (Evotomys) 



ungava. (Phenaconiys) 



Ungulata 33, 



ungulatus. ( Uicrostonyx I 



uni-cinctus. (Dasypusi 



Urocyon 



Urocyon cinereo-argenteus.307, 308, 



Urocyon c. californicus 308, 



Urocyon c. tloridanus 



Urocyon c. ocytlious 



Urocyon c. scotti 



Urocyon c. texensis 308, 



Urocyon c. townsendi 



Urocyon griseus 



Urocyon virginianus 



Urotrichus gibbsi 



Ursidae 



ursina. (Callotaria) 



ursina. (Phoca) 



Ursinae 



ursinus. (\"espertilio) 



Ursus 



Ursus americanus 



Ursus a. sornborgeri 



Ursus arctus 



Ursus dalli 



Ursus emmonsi .... 



Ursus tloridanus 



Ursus horribilis 



Ursus h. alascensis 



Ursus h. liorriaeus 



Ursus lotor 



Ursus luscus 



Ursus luteolus 



L'rsus maritimus 



Ursus miildendorlili 



Ursus ricliardsoni 



129 

 75 



189 

 "75 



169 



425 

 209 

 4 

 307 

 309 

 309 

 307 

 309 

 308 

 309 

 309 

 307 

 307 

 386 

 309 

 357 

 357 

 309 

 410 

 309 

 313 

 3'4 

 309 

 3«i 

 315 

 314 

 312 

 3'2 

 312 

 317 

 333 

 314 

 310 

 3to 

 313 



