GENERAL INDEX. 



591 



OdontocUla, ii. 4S6 

 Odontolabris, ii. 493 

 Odontophorvs, ii. 339 

 Odontophrynus, ii. 420 

 CEdemia, ii. 364 

 (Edicnemis, ii. 355 

 Oedura, ii. 399 

 (EnM, ii. 332 

 Ogmodon, ii. 383 

 Ogyris, ii. 477 

 Oligdon, ii. 375 

 OLIGODONTID^E, ii. 374 

 Oligosarcus, ii. 445 

 Olisthopus, ii. 489 

 Ofijlogon, ii. 418 

 Ofyra, ii. 442 

 Omaseus, ii. 489 

 Ommatophoca, ii. 204 

 Omolepida, ii. 397 

 Omostenus, ii. 492 

 Omphalotropis, ii. 521 

 Omus, ii. 487 

 ONCIDIAD.E, ii. 517 

 Oncidium, ii. 518 

 Onychodactylus, ii. 413 

 Onychogale, ii. 195 

 Onychogalea, ii. 251 

 Onychognathus, ii. 288 

 Onchorhynchus, ii. 447 

 Oncostoma, ii. 101 

 Ophidia, classification of, i. 99 

 OPHIDIA, ii. 372 



remarks on the general distribution of, ii. 



386 



fossil, ii. 387 

 OPHIDIID^, ii. 440 

 Ophiditim, ii 440 

 OPHIOCEPHALID.E, ii 435 



Ophiodes, ii. 397 



OPHIOMORID^E, ii. 398 



Ophiomorus, ii. 398 



Ophiophagus, ii. 383 



Ophiops, ii. 391 



Ophioscincus, ii. 397 



Ophisaurvs, ii. 392 



Ophites, ii. 380 



Ophonus, ii. 489 



Ophryodera, ii. 487 



Ophysia, ii. 209 



OPISTHO-BRANCHIATA, ii. 529 



OPISTHOCOMI, ii. 345 



Opisihocomus, Brazilian caves, i. 164 

 ii. 345 



Opisthodelphys, ii. 418 



Opisthostoma, ii. 520 



Opisthoporus, ii. 520 



Oporornis, ii. 279 



Opossum, extinct in European Miocene, i. 121 



Opossums, ii. 248 



Opsariichthys, ii. 452 



Opsiphanes, ii. 472 



Orang-utan, ii. 171 



Orca, ii. 209 



Orcaella, ii. 209 



Orchesticus, ii. 99 



Orchilus, ii. 101 



Oreas, ii. 223 



Oreicola, ii. 260 



Oreintw, ii. 452 



Oreocephalus, ii. 401 



Oreocincla, ii. 256 



Oreodeira, ii. 401 



Oreodon, N. American Tertiary, i. 138 



Oreodontidce, N. American Tertiary, i. 138 



Orececa, ii. 271 



Oreomanes, ii. 278 



Oreonectes, ii. 453 

 Oreonympha, ii. 108 

 Oreoperdix, ii. 338 

 OREOPHASIN.E, ii. 343 

 Oreophasis, ii. 343 

 Oreophilus, ii. 356 

 Oreopyra, ii. 107 

 Oreortyx, ii. 339 

 Oreoscoptes, ii. 256 

 Oreothraupis, ii. 99 

 Oreotrochilus, ii. 107 

 Orestias, ii. 450 

 Oriental region, denned, i. 75 

 subdivisions of, i 75 

 description of, i. 314 

 zoological features of, i. 315 

 mammalia of, i. 315 

 birds of, i. 316 

 reptiles of, i. 317 

 amphibia of, i. 317 

 fresh-water fishes of, i. 318 

 summary of vertebiata of, i. 318 

 insects of, i. 318 

 sub-regions of, i. 321 

 concluding remarks on, i. 362 

 tables of distribution of animals of, i. 364 

 Oriental relations of W. African sub-region, i. 



265 

 Oriental and Palsearctic faunas once identical, 



i. 362 

 Oriental and Ethiopian faunas, cause of their 



resemblances, i. 363 

 Origma, ii. 260 

 Oriocalotes, ii. 402 

 Orioles, ii. 268 

 ORIOLID.E, ii. 268 

 Oriolus, ii. 268 

 Orites, ii. 266 

 Ornithion, ii. 101 



ORNITHORHYNCHID.E, ii. 253 

 Ornithorhynchus, ii. 253 

 Oroccetes, ii. 256 



Orohippus, N. American Tertiary, i 136 

 Ortalida, ii. 343 

 Orthagoriscus, ii. 457 

 Orthalicus, ii. 516 

 ORTHID.E, ii. 532 

 ORTHOCERATID.E ii. 50G 

 Orthodon, ii 452 

 Orthogonius, ii. 491 

 Orthogonys, ii. 98 

 Orthonyx, ii. 260 

 Orthorhynchus, ii. 108 

 Orthotomus, ii. 257 

 Ortygometra, ii. 352 

 Ortygornis, ii. 338 

 Ortyx, ii. 339 

 Ortyxelos, ii. 341 

 ORYCTEROPODID.E, ii. 246 

 Orycteropus, ii. 246 

 Orycterus, ii. 231 

 ORYGIKLE, ii. 223 

 Oryx, ii. 2-23 

 Oryzoborus, ii. 285 

 Oryzorictes, ii. 188 

 Osmerus, ii. 447 

 Osphranter, ii. 251 

 Osteobrama, ii. 453 ^ 



Osteochilus, ii. 451 

 Osteogeniosits, ii. 443 

 OSTEOGLOSSID^E, ii. 454 

 Osteoglossum, ii. 454 

 Ostinops, ii. 282 

 OSTREID^, ii. 533 

 Ostrich, Miocene of N. India, i. 162 

 Ostriches, ii. 368 



