3e50 PROCEEDINGS : BOSTON SOCIETY NATURAL HISTORY. 
truei (Odocoilens), 17, SOO. 
truei (Peromyscus), 87. 
truei (Phenaconiys), 301. 
truei (Scapanus), 252. 
truei (Sciurus), 27. 
truei (Syiiaptomys), 133. 
tschuktschorum (Lepus), 180. 
tumida (Rhogeessa), 204. 
tundrensis (Sorex), 230. 
tuza (Geomys), 130. 
tuza (Mus), 135, 130. 
Tylomys, 88. 
iiudicaudus, 88. 
paiiamensis, 88, Si), 
watsoni, 89. 
tylorhinus (Platygeomys), 140. 
ubericolor (Lepus), 189. 
umbrinus (Eutainias), 45. 
uinbrinus (Geomys), 148. 
umbrinus (Peromyscus), 71. 
umbrinus (Tamias), 45. 
umbrinus (Tlioniomys), 148. 
umbrosus (Microtus), 129. 
unalascensis (Dicrostonyx), 135. 
unalasceusis (Microtus), 121. 
ungava (Evotomys), 115. 
ungava (Phenaconiys), 112, 302. 
Ungulata, 12. 
unicinctus (I)asypus), 11. 
Urocryptus bilineatus, 208. 
Urocyou, 202. 
calit'ornicus, 202. 
cinereoargenteus, 202. 
tloridanus, 202. 
fraterculus, 202. 
guatemalae, 203. 
littoral is, 203. 
ocytlious, 203. 
parvidens, 204. 
scottii, 203. 
texensis, 203. 
townseiidi, 202. 
virginianus, 202. 
Uroderma, 289. 
bilobatum, 289. 
jilanirostre, 289. 
Uroleptes, 10. 
Urotrichus gibbsii, 253. 
Ursidae, 232. 
ursina (Phoca), 191, 192. 
ursinus (Arctocephalus), 192. 
ursinus (Callorhinus), 192. 
ursinus (Proniops), 270. 
Ursus, 232. 
alascensis, 233. 
americanus, 233, 23Jf.. 
arctos, 232. 
californicus, 233. 
Ursus cancrivorus, 228. 
dalli, 232. 
emmonsi, 234. 
emmonsii, 234. 
ferox, 232. 
floridanus, 234. 
glacilis, 234. 
gulo, 218. 
horriaeus, 233. 
horribilis, 232, 233. 
lotor, 228. 
luscus, 218. 
luteolus, 234. 
maritimus, 234. 
middendorffi, 232. 
richardsoni, 233. 
sitkensis, 232. 
sornborgeri, 234. 
taxus, 217. 
utahensis (Eutainias), 41. 
vafer (Vulpes), 205. 
vafra (Vulpes), 205. 
vaga (Lutra), 211. 
vagrans (Sorex), 237. 
vallicola (Microtus), 120. 
Vampyrops, 290. 
lineatus, 290. 
vittatus, 290, 291. 
Vampyrus, 279. 
auritus, 279, 2S0. 
cirrhosus, 281. 
spectrum, 279. 
vancouverensis (Sciurus), 33. 
vancouverensis (Sorex), 238. 
variabilis (Sciurus), 37. 
variegatoides (Sciurus), 29. 
variegatus (Cliironectes), 4. 
variegatus (Sciurus), 50. 
variegatus (Spermopliilus), 50, 57. 
varius (Sciurus), 300. 
velifer (Myotis), 255, 307. 
velifer (Vespertilio), 255. 
» vellerosus (Ateles), 299. 
vellerosus (Microtus)' 303. 
velox (Canis), 200. 
velox (Vulpes), 200. 
ventoruiii (Sciurus), 33. 
ventralis (Sorex), 238. 
venusta (Neotoma), 109. 
venustus (Tamias), 39. 
veraecrucis (Lepus), 188. 
veraecrucis (Pipistrellus), 259. 
veraecrucis (Vesperugo), 259. 
veraepacis (Sorex), 240. 
Vesperinius americanus, 70. 
difficilis, 72. 
fraterculus, 73. 
mearnsii, 78. 
