68 
Ostracion auritus, ii. 160. 
bicaudalis, vi. 396. 
cornutus, vi. 396, 
flavigaster, iii. 164. 
lenticularis, ii. 158, 159. 
—— ornatus, iii. 165. 
spilogaster, iii. 163. 
Ostracoda of the Antwerp Crag, a monograph of the, 
x. 379-410. 
, on new or imperfectly known species of marine, 
y. 359-393. 
Ostrich, on the axial skeleton of the, viii. 385-451. 
, skull of, x. 308. 
, African, vi. 517. 
Otaria jubata, descriptive anatomy of, vii. 527-596 ; 
viii. 501-582. 
Othonia quinquedentata, li. 57, 65, 
sexdentata, i. 56, 65. 
Othria augias, x. 516. 
Otis arabs, vii. 294; ix. 225, 226. 
galapagoensis, ix. 493. 
—-— kori, ix. 225, 226. 
—— lugoniensis, ix. 225. 
—— melanogaster, vii. 328. 
—— nigriceps, ix, 226. 
—— philippensis, ix. 144. 
—— secretarius, ix. 141. 
tarda, iv. 285. 
Otolicnus alleni, v. 76. 
crassicaudatus, v. 76, 83, 100. 
Otolithus albus, vi. 387, 429. 
reticulatus, vi. 887, 430. 
squamipinnis, Vi. 387, 429. 
Otus africanus, iy. 240. 
americanus, iv. 233. 
—— ascalaphus, iv. 239. 
bengalensis, iy. 239. 
brachyotus, iv. 236; vii. 211. 
capensis, iy. 237. 
cherilus, ix. 545. 
cnotus, ix. 546. 
grammicus, iy. 231. 
macrurus, iv. 233. 
maculosus, iv. 240. 
madagascariensis, iy. 235. 
magicus, Vill. 39. 
mantis, ty. 230. 
Otus meaicanus, iv. 235. 
myron, ix. 546, 631. 
—— pholus, ix. 546. 
semitorques, iv. 230. 
—— siquapa, iv. 233. 
—— stygius, iv. 233. 
—— syriacus, ix. 545. 
—— ulula, iv. 236. 
—— versicolor, ix. 546. 
—— vulgaris, iv. 207, 214, 219, 232. 
—— wilsonii, iv. 233. 
gonurus, iv. 234. 
Oulodon grayi, x. 417. 
Ourax erythrorhynchus, ix. 283. 
galeata, ix. 285. 
—— mitu, ix. 283. 
pauci, ix. 283, ix. 285. 
tomentosa, ix. 284. 
Ovibos moschatus, x. 131. 
Ovis tragelaphus, iii. 64, 66. 
Ox-eye Tit, skull of, x. 279. 
Oxycerca jagori, ix. 208, 251. 
Oxylophus afer, vii. 285. 
jacobinus, vii. 286. 
Pachycephala fusca, ix. 338, 352; x. 311. 
Pachygonia abboti, ix. 534. 
boisduvalit, ix. 633. 
caliginosa, ix. 533, 635. 
coffe, ix. 533, 534. 
hopfferi, ix. 635. 
magna, iX. 534. 
subhamata, ix. 533. 
Pachylia achemenides, ix. 627. 
equivalens, ix. 622. 
Jicus, ix. 578. 
inconspicua, ix. 579. 
inornata, ix. 578. 
— kadeni, ix. 622. 
molucca, ix. 578. 
resumens, ix. 579. 
syces, ix. 578. 
— unduatifascia, ix. 578. 
venezuelensis, ix. 578. 
Pachyrhamphus sp., x. 311. 
sp-, skull of, x. 310. 
Padda oryzivora, viii. 72 ; ix. 207, 251. 
Pagellus acarne, ii, 177, 200. 
