INDEX. 



711 



Nerophis, 681 

 Nerves, 103 

 Nesiarclius, 434 

 Nettastoma, 674 

 Neural arches, 85 

 Neural spine, 52 

 NeurapojDhyses, 51 

 Neurology, 96 

 Neuroskeleton, 85 

 New Zealand sub-region, 



248 

 Nictitating membrane, 



113 

 Nilsson, 27 

 Niphon, 397 

 Nomeidae, 455 

 Nomeus, 456 

 Nounat, 501 

 Nordmann, 28 

 North American district, 



266 

 North American region, 



246 

 North Atlantic, 262 

 Northern temperate zone, 



262 

 Nortliern zone, 240 

 North PaciHc, 268 

 Nostrils, 37, 109 

 Notacantlms, 523 

 Notidaiius, 325 

 Notochord, 63 

 Notoglauis, 569 

 Notograjitus, 498 

 Notopterus, 665 

 Notothenia, 466 

 Noturus, 568 

 Novacula, 529 

 Nummopalatus, 526 

 Nuria, 598 

 Nutrition, organs of, 121 



Oar-fish, 522 

 Oblata, 406 

 Occipital, 56 

 Ochetobius. 602 

 Odax, 532 

 Odontaspis, 321 

 Odonteus, 525 

 Odontostomus, 587 

 Oil-sardine, 660 

 Old Red Sandstone, 194 

 Old wife, 406 

 Olfactory lobes, 97 

 Olfactory or^au, 109 

 Oligorus, 392 

 Oligosarcus, 611 

 Olistherops, 533 

 Ombre, 429 



Ombre chevalier, 645 

 Omentum, 132 

 Onchus, 314 

 Oucorhynchus, 646 

 Oneirodes, 473 

 Oolithic fishes, 199 

 Opercular gill, 138 

 Operculum, 38, 54, 91 

 Ophichthys, 674 

 Ophidiidffi, 546 

 Ophidium, 549 

 Ophiocephalidfe, 513 

 Ophiodou, 491 

 Ophiopsis, 368 

 Opisthognathus, 466 

 Opisthopteryx, 656 

 Opisthoticum, 88 

 Opsariichthys, 602 

 Optic lobes, 97 

 Oracanthus, 314 

 Orbito sphenoid, 57, 85 

 Oreinus, 595 

 Oreonectes, 606 

 Orestias, 615 

 Orfe, 599 

 Orthacantlius, 334 

 Orthagoriscus, 690 

 Orthodon, 601 

 Orthostomus, 489 

 Osbeck, 13 

 Osmeroides, 582, 631 

 Osmerus, 646 

 Os operculare, 91 

 Osphromeniis, 517 

 Osteobrama, 604 

 Osteochilus, 596 

 Osteogeniosus, 569 

 Osteoglossum, 654 

 Osteolepis, 365 

 Ostracion, 686 

 Os trans vers um, 56 

 Otolith, 116 

 Otolithus, 430 

 Oulachon, 647 

 Ovaries, 158, 166 

 Ovum, 158, 159, 167 

 Owen, 33 

 Oxuderces, 489 

 Oxyconger, 674 

 Oxydoras, 572 

 Oxygnathus, 370 

 Oxymetopon, 489 

 Oxyrhina, 320 

 Oxytes, 319 



Pachycormus, 368 

 Pachymetopon, 4C6 

 Pachyurus, 430 

 Pageilus, 408 



Pagrus, 408 

 Paired fins, 42 

 Palffiarctic region, 243 

 Palaeichthyes, 312 

 Palffiogadus, 539 

 Palffioniscidte, 369 

 Palffiorliynchus, 437 

 Palffioscyllium, 326 

 Pala^ospinax, 330 

 Palatine, 56, 90 

 Palatine arch, 55 

 Palimphyes, 457 

 Pallas, 13 

 Pammelas, 447 

 Pancreas, 133 

 Pangasius, 566 

 Pantodou, 653 

 Papilla urogenitalis, 156 

 Paracanthobrania, 598 

 Paradiplomystax, 569 

 Paradise-fish, 517 

 Paragoniates, 610 

 Paralepis, 585 

 Paralichthys, 556 

 Paramisgurnus, 606 

 Paramyrus, 674 

 Paraperca, 375 

 ParajDhoxinus, 601 

 Parajjophyses, 51 

 Parascopelus, 582 

 Parascyllium, 326 

 Parasphenoid, 56, 89 

 Pardachirus, 558 

 Paretroplus, 535 

 Parietals, 57, 89 

 Pariodon, 581 

 Parker, 32 

 Parma, 525 

 Parnell, 27 

 Paroccipital, 56, 88 

 Parodon, 607 

 Parophrys, 557 

 Paropsis, 450 

 Parra, 13 

 Parr-marks, 631 

 Parrot-wr-asses, 530 

 Patfficus, 497 

 Patagonian district, 289 

 Peal, 644 

 Pectoral arch, 92 

 Pectoral fins, 42 

 Pediculati, 469 

 Pegasus, 482 

 Pelagic fishes, 292 

 Pelamys, 459 

 Pelargorhynchus, 666 

 Pelecus, 604 

 Pelerin, 322 

 Pellona, 660 



