Typhon robusta, viii. 98. 
Tyrannula magnirostris, ix. 493. 
Ulocyathus arcticus, vii. 807, 322. 
Ulula acadica, iv. 207. 
aluco, y. 187. 
fasciata, iv. 253, 264, 
—— lapponica, iv. 256. 
liturata, iv. 257. 
microphthalma, iv. 256. 
Umbrina analis, vi. 387, 426. 
elongata, yi. 387, 425. 
nasus, Vi. 387, 426. 
undulata, vi. 427. 
Unio pictorum, ii. 99. 
Unzela discrepans, ix. 539. 
japia, ix. 530. 
Upeneus grandisquamis, vi. 383, 386, 420, 
tetraspilus, vi. 386, 420, 
Upupa epops, vii. 226. 
Uracanthus augustatus, ii. 189. 
elongatus, iii, 189. 
— marginellus, iii. 198. 
pallens, iii. 198. 
sericeus, 1. 107. 
triangularis, i. 107, 110, 111; iii. 187, 201. 
Ureginthus pheenicotis, vii. 266. 
Urania and Mygale, natural history of the two an- 
nulose genera, i. 179-194. 
— boisduvalii, i. 179, 182; x. 518. 
cresus, X. 524, 
druryi, x. 523. 
fernandine, i, 180, 182, 184, 186, 187, 194; 
x. 518, 522. 
leilaria, x. 508. 
—— leilus, i. 188, 189. 
lunus, x. 521. 
—— macieayi, x. 523. 
madagascariensis, X. 523. 
orithea, x. 521. 
orontes, i. 188; x. 520. 
patroclus, x. 520. 
poeyt, X. 522. 
prometheus, X. 522. 
ripheus, i. 188; x. 513, 514, 519, 520, 522, 
523, 524. 
sloanaria, x. 522, 
sloanus, 1. 179, 180. 
96 
Uranidia amphielus, x. 521, 
—— boisduvalii, x. 522. 
— brasiliensis, x. 521. 
cacica, X. 521. 
fulgens, x. 521. 
leilus, x. 517, 520, 521. 
poeyt, X. 522, 
sloanus, x. 522, 541. 
Uraniide, observations on the, x. 507-542. 
Urapteryx sambucaria, x. 514, 542. 
Urax erythrorhynchus, ix. 283. 
mitu, ix. 283. 
tomentosa, ix. 284. 
tuberosa, ix. 283. 
urumutum, ix. 282. 
Uria troile, ix. 322. 
Urodiscus discurus, ix. 132. 
spatuliger, ix. 132. 
Uroloncha jagori, ix. 208. 
Urolophus mundus, vi. 397, 491. 
Urospiza torquata, vill. 106. 
Urotrygon mundus, vi. 383, 491. 
Ursine Dasyure, ii. 317, 380. 
Urrua coromanda, iv. 243. 
umbrata, iv. 257. 
Ursus, bones of the genus, from the quaternary 
fauna of Gibraltar, x. 60-74. 
arctos, x. 59, 61, 62, 63, 64, 65, 66, 67, 68, 69, 
70, 71, 72, 73. 
bourgwgnati, x. 63. 
brasiliensis, ii. 202, 203. 
cadaverinus, x. 64. 
cinereus, x. 64. 
crowtheri, x. 73. 
faidherbianus, x. 64, 71, 72, 73. 
ferow, x. 59, 63, 64, 65, 66, 67, 68, 69, 70, 71 
72. 
ferox fossilis, x. 63. 
formicarius, x. 64. 
fossilis, x. 63, 64, 65, 66, 67, 68, 69, 70, 74. 
—— fuscus, x. 64. 
horribilis, x. 62, 64. 
horridus, x. 64. 
isabellinus, x. 64, 69, 70, 74. 
labiatus, x. 74. 
lartetianus, x. 64, 71, 72, 
—— letowrneuxianus, x. 64, 71, 72. 
