INDEX 



Optoeoele, 102»— See Brain 



Oral cirri of Amphioxua, 45 * 49 



Oral hood, 45* 



Oral lobes of Doliolum, 27 



Oral siphon, 15, 18 



Orang, 487, 552, 554, 556, 567, 600 



Ora serrata, 110* 



Orbicular, of Rabbit, 455 



Orbit, 76* 



Orbito-sphenoid, 79*, 80— See Skull 



Orca, 480 



Ofca gladiator, 500 



Oriental region, 630 



Omithorhynchus, 478, 489, 498, 493, 516, 

 517, 518, 519, 580, 621, 557, 562, 575, 

 579,597 



Omithorhynchus anatimis, 498, 679 



Omithosasria— See Pterosauria 



Orthagoriscus, 232 



Orthoceras, 640 



Orthogenesis, 666* 



Orthotomua, 436 



Urycteropodidce, 479 — See Gape Ant- 

 eaters 



Oryctermms, 525, 664, 630 



Orycterlipus capensis, 500 



Os cloacae, 322, 323 



Os cordis, 576* 



Osmtrus, 640 



Ossa innominata, 322* 



Ossicula auditils, of Kabbit, 455 



Ossification, centres of, 79 



Osteooranium, 81* 



Osteo-dentine, 85* 



Osteostraci, 262 



Ostracion, 223 



Ostraeodermi, 261*, 262, 263, 264 



Ostrich, 411, 421, 422, 430, 432, 435, 436, 

 439, 442, 445 



OtariidcE, 484, 506, 599 



Otis, 416 



Otocyst, 26, 30, 35 



Otoliths, 116 



Otters, 484, 505 



Ovarian artery, 92 : vein, 94 



Omdce, 482, 628— See Sheep 



Ovisariea, 539 



Ovulists, 671* 



Owen, R., 681, 686 



Owls, 416, 422, 430, 434, 445 



Oxen, 482, 501, 571, 582, 598 



Oyster-catchers, 416 



X ^DOGENKSIS IN AXOLOTL, 311 



Pachyomis, 430 

 Pacinian corpuscles, 107* 

 Palaearotic region, 628 

 Palceohatteria, 37i 



VOL. II 



PalcBoniscns maproponMs, 244 



Paljeontologicaf evidence of evolution, 

 646 



Paloiospondylus ganni, 143 



Palamedea, 416 



Palate, hard and soft, 459, 570 



Palatine, 81*— See Skull 



Palatine netve, 105 



Palatine teeth, HoloeephaH, 19l : 'front; 

 210. &c. 



Palato-pterygoid, 250 



Palato-quadrate, 7f *, 80— See Skull 



Palinunis, 62 1 



Pallas, 674 



Pallium, 103* 



Pancreas, 71, 87*— See Digestive Systettl 



Pancreatic juice, 87* 



Pangenesis, 663* 



Panmixia, 655 



Parachordals, t5* 



Paracoele, 100*— See Brairi 



Paracone, 561* 



Paraconid, 561* 



Paradiseidce, 417, 424, 443, 622 



Parafibula, 524 



Paramyxine, 143 



Paranephrops, 621, 622 



Paraphysis, 102* 



Parapineal eye, 102* 



Parapophyses, 201* 



Paraquadrate, 270* 



Parasphenoid, 80*— See Skull 



Pareiosanria, 336 



Parencephalon, 100* —See Brain 



Parietal, 79*, 80— See Skull 



Parietal foramen of Stegooephala, 30 



Parietal organ, 102*, 329, 361, 362 



Parietal segment, 80* 



Paroccipital, 450 



Parotic processes, 317 



Parotid gland, 459 



Parotoid glands, 297* 



Parra, 416 



Parrakeets, 416, 430 



Parrots 416, 420, 422, 428, 434, 443 



Partridge, 436 



PartM iritannicua, 622 



Parus rosea, 622 



Passeres, 417, 428, 436, 442, 445 



Pasteur, Louis, 686 



Patagium, 506* 516 



Patella, 393 



Patella ulnaris, 430 



Paunch — See Rumen 



Pecarries, 482, 599 



Pecten, of Beptilia, 331, 361 : Pigeon, 



406 : Birds, 435 

 Pectoral arch, of Cranatia, 83, 84* : Dog- 

 fish, 161* : Elasmobranehii, 175 : Trout, 

 209 : Teleostomi, 231 : Ceratodua, 248, 

 249: Frog, 271, 272 1 Amphibia, .302, 

 303 : Lizard, 320, 321 : Reptilia, 353, 



Y y 



