Index 
Soricidae, 260 
Spermophile, Kennicott's, 158 
Spcrmophile, Large Spotted, 157 
Spermophile, Little, 161 
Spermophile, Striped, 159, 
Spcrmophile, Wyoming, 156 
Spilogale, 212 
Spilogale arizonae, 216 
Spilogale gracilis saxatilis, 217 
Spilogale interrupta, 214 
Spilogale tenuis, 216 
spilosoma major, Citellus, 157 
Spotted Skunk, Arizona, 216 
Spotted Skunk, Great Basin, 217 
Spotted Skunk, Prairie, 214 
Spotted Skunk, Rocky Moun- 
tain, 216 
Spotted Spermophile, Large, 157 
Squirrel, Abert's, 183 
Squirrel, Antelope, 164 
Squirrel, Fremont's, 185 
Squirrel, Mimic, 183 
Squirrel, Pine, 185 
Squirrel, Plain-backed, 184 
Squirrel, Rock, 162 
Squirrel, Rock, Utah, 164 
Squirrel, Say's Ground, 166 
Squirrel, Wortman's Ground, 
169 
streatori leptus, Putorius, 197 
Striped Gopher, 159 
Striped Spermophile, 159 
Striped Spermophile, Little, 162 
subulatus, Myotis, 275 
Swift Fox, 239 
Swift Pocket Gopher, 81 
Sylvilagus, 44 
Sylvilagus auduboni baileyi, 49 
Sylvilagus auduboni warreni, 52 
Sylvilagus floridanus similis, 45 
Sylvilagus nuttallii grangeri, 49 
Sylvilagus nuttallii pinetis, 47 
T 
Talpidae, 259 
talpoides agrestis, Thomomys, 
84 
Tawny Deer-Mouse, 128 
Taxidea, 205 
Taxidea taxus, 205 
taxus, Taxidea, 205 
tenellus nanus, Sorex, 265 
tenuis, Spilogale, 216 
Texas Jack Rabbit, 43 
Texas Skunk, Long-tailed, 211 
texianus, Lepus californicus, 43 
Thomomys, 77 
Thomomys aureus, 79 
Thomomys aureus pervagus, 79 
Thomomys clusius, 80 
Thomomys clusius ocius, 81 
Thomomys fossor, 82 
Thomomys fulvus, 80 
Thomomys talpoides agrestis, 84 
Tornillo Deer-Mouse, 133 
tornillo, Peromyscus leucopus, 
133 
townsendi, Lepus campestris, 37 
Tricky Coyote, 245 
tridecemlineatus pallidus, Citel- 
lus, 159 
tridecemlineatus parvus, Citel- 
lus, 161 
True's Deer-Mouse, 135 
truei, Peromyscus, 135 
Tucubaya Free-tailed Bat, 286 
U 
uinta. Lynx, 255 
Ungulata, 3 
Urocyon, 234 
Urocyon cinereo-argenteus 
scotti, 235 
Ursidae, 222 
Ursus, 222 
Ursus americanus, 232 
Ursus horribilis, 223 
Ursus horribilis horriasus, 223 
Utah Chipmunk, 171 
Utah, Citellus variegatus, 163 
Utah Rock Squirrel, 163 
utahensis, Eutamias dorsalis, 171 
V 
vagrans dobsoni, Sorex, 264 
varians. Mephitis mesomelas, 
211 
variegatus grammurus, Citellus, 
162 
variegatus utah, Citellus, 163 
velox, Vulpes, 239 
Vespertilio fuscus, 279 
Vespertilionidae, 271 
vison energumenos, Lutreola, 
199 
Vole, Cantankerous, 99 
Vole, Dwarf, 98 
