674 



INDEX 



Notidanidce, 156 



Notochord, 1*: Balaiioglossus, 3 : Cepha- 

 lodiscus, 9 : Rhabdopleura, 10 : As- 

 cidian. larva, 31 : Amphioxus, 41, 53 : 

 Craniata, 66 See Vertebral column 



Notochordal sheath, 41, 66 



Notochordal tissue, 41, 66 



Notorni*, 398, 402 



Notornis alba, 596 



Notoryctes, 467, 546, 548 



Nototherium, 605 



Nototherinm mitcJietli, 569 



Nototrema marsupium, 288 



Nuchal plates, 323* 







BLIQUE SEPTUM, 371 



Obstetric Toad, 288 



Occipital plane, 482* 



Occipital region, 69* 



Occipital segment, 73* 



Oceanic Islands, 596* 



Oceanites, 387 



Octacnemidce, 19 

 ~ tacnemus, 19, 25, 26 

 ] ctopi, 598 



'dromus, 388, 398, 402, 416 

 ontoblasts, 80*, 526 

 ontoceti, 451*, 501 



.onto id process, of Amphibia, 279 : 

 Lizard, 294 



Odontoid*}, 385, 415, 416 



Odontopteryx, 406 



(Esophageo-cutaneous duct, Myxinoid, 

 130 



Oikopleura, 19, 21, 25, 26 



Oil-bird, 597 



Oil-gland, 351* 



Oken, Lorenz, 640 



Old-world Monkeys, 525 



Olfactory capsules, 69* 



Olfactory lobe, 94* See Brain 



Olfactory lobe, median: Amphioxus, 48 : 

 Craniata, 94 



Olfactory organ, of Amphioxus, 48 : 

 Craniata, 101 : Lamprey, 124 : Myxi- 

 noids, 130: Dog-fish, 150: Elasmo- 

 branchii, 165 : Trout, 199 : Ceratodus, 

 231 : Frog, 265 : Amphibia, 287 : 

 Lizard, 308: Reptilia, 335: Pigeon, 

 378 : Mammalia, 547 



Olfactory region, of Skull, 69* 



Olfactory ventricle, 94* See Brain 



Onychodactylus, 277 



Opercular, 192 



Operculum, of Balanoglossus, 2: Crani- 

 ata, 60 : Holocephali, 175 : Teleostomi, 

 209 : Tadpole, 271 : Birds, 410 

 OpMdia, 311, 312*, 313, 320, 328, 332 

 Opisthoccelous, 213* 



Opifftkocomus, 388, 392, 393 

 Opisthotic, 72* See Skull 

 Opossums, 449, 466, 489, 492, 531, 552, 



564, 568 



Optic capsules, 69* 

 Optic lobes, 94 See Brain 

 Optic thalamus, 96* See Brain 

 Optic ventricle, 94* See Brain 

 Optoccele, 94* See Brain 

 Oral hood, 39* 

 Oral siphon, 13 



Orang, 460, 520, 522, 524, 525, 566, 575 

 Orbicular, of Rabbit, 426 

 Orbito-sphenoid, 72* See Skull 

 Orca, 450, 451 

 Orca gladiator, 472 

 Oriental region, 594 

 Ornithorhynchus, 448, 461, 464, 465, 485, 



486, 488, 489, 530, 543, 546, 547, 564 

 Ornithosauria, 415, 416 See Pterosauria 

 Orthayoriscus, 217 

 Orthotomus, 408 

 Orycteropodidce, 450 

 Orycteropus, 492, 493, 532 

 Orycteropus capensis, 471 

 Oscordis, 543 



Ossicula auditus, of Rabbit, 426 

 Ossification, centres of, 72* 

 Osteo-dentine, 79* 

 Osteostraci, 244 

 Ostracion, 207 

 Ostracodermi, 243 



Ostrich, 392, 394, 401, 404, 407, 408, 416 

 Otariidce, 456, 475 

 Otis, 388 

 Otocyst, 32 

 Otters, 456, 475 

 Ovida, 453 

 Ovis aries, 507 

 Ovulists, 631 

 Owen, R., 641, 646 

 Owls, 388, 394, 402, 406 

 Oxen, 453, 472, 526, 550, 565 

 Oyster-catchers, 388 



JL ^EDOGENESTS IN AXOLOTL, 289 



Pachyornis, 402 



Pacinian corpuscles, 100*, 101 



Palsearctic region, 592 



Palaeohatteria, 343 



Palceoniscus macropomus, 228 



Palaeontological evidence of evolution, 610 



PalcKOspondylus ganni, 133 



Palamedea, 388 



Pallas, 634 



Palatine, 74* See Skull 



Palato-quadrate, 71* See Skull 



Pallium, 96* 



Pancreas, 81* See Digestive system 



*-***'*- H 



