INDEX 



717 



Optocfele, 102*— See Brain 



Oral cirri of Ainphioxus, 4.') * 49 



Oral hood, 45* 



Oral lobes of Doliolum. 27 



Oral siphon. If), 18 



Orang, 487, .V>i, ,m4, 556, 557, Gn(» 



Ora serrata, 110* 



Orbicular, of Rabbit, 455 



Orbit, 76* 



Orbito-sphenoid, 79*, 80— See Skull 



Orra, 480 



Orra f/ladiator, 500 



Oriental region, 680 



Oritithorhynchm, 478, 48H, 492. 493, 516, 

 517, 518, 519, 520, 5:21, 557, 562, 575, 

 579, 597 



Oniithorfn/iirhu-s amttiiiux, 493. 579 



Omitliosauria — See Pterosauria 



Orlhagori.sciis, 232 



Orthoctras, 640 



Orthogenesis, 666* 



Orthotomits, 436 



Orycteropodid<i\ 479 — See Cape Ant- 

 eaters 



Orycteropns, 525, 664, 63(1 



OrycttropH.f capensi-i, 500 



Os cloac;e, 322, 323 



Os cordis, 576* 



Oxnierus, 640 



Ossa iiinoniinata, 322* 



Ossicula audittls, of Rabbit, 455 



Ossification, centres of, 79 



Osteocranium, 81* 



Osteo-dentine, 85* 



Osteostraci, 262 



0.'<trarioii, 223 



Ostracodermi, 261*. 262, 263, 264 



Ostrich, 41 1, 421, 422, 430, 432, 435, 436, 

 439, 442, 445 



Otariid'v, 484, 506, 599 



Otis, 416 



Otocvst, 25, 30, 35 



Otolfths, 116 



Otters, 484, 505 



Ovarian artery, 92 : vein, 94 



Ovidtv, 482, 628— See Sheep 



Ovis aries, 539 



Ovulists, 671* 



Oweu, R., 681,686 



Owls, 416, 422, 430, 434, 445 



Oxen, 482, 501, 571, 582, 598 



Oyster-catchers, 416 



_L .5:dogexesis in Axolotl, 

 Pachyornis, 430 

 Pacinian corpuscles, 107* 

 Palajarctic region, 628 

 Palceohatteria, 371 



VOL. II 



311 



PahponisntA marropomus, 244 



Pahcontological evidence of evolution, 

 (i46 



Palaospondylus yanni, 143 



I'ldnmnden, 416 



Palate, hard and soft, 459. ",\\ 



Palatine, 81*— See Skull 



Palatine nerve, 105 



Palatine teeth, Holocephali, 191 : Trout, 

 210. &c. 



Palato-pterygoid, 250 



Palato-quadrate, 77*, 80— See Skull 



I'ltlinurus, 621 



Pallas, 674 



Pallium, 103* 



Pancreas, 71, 87* — See Digestive system 



Pancreatic juice, 87* 



Pangenesis, 663* 



Panmixia, 655 



Parachordals, 75* 



Paraca4e, 100* — See Brain 



Paracone, 561* 



Paraconid, 561* 



Paradiseid'c, 417, 424, 443, 622 



Parafibula, 524 



Paramyxine, 143 



Paranephrop>i, 621, 622 



Paraphjsis, 102* 



Parapincal eye, 102* 



Parapophyses, 201* 



Paraquadrate, 270* 



Parasphenoid, 80* — See Skull 



Pareiosauria, 336 



Parencephalon, 100*— See Brain 



Parietal, 79*, 80— See Skull 



Parietal foramen of Stegocephala, 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 



Parun hritannicus, 622 



Pnnts rosm, 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 Reptilia, 331, 361 : Pigeon, 

 406 : Birds, 435 



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

 fish, 151* : Elasmobranchii, 175 : Trout, 

 209 : Teleostomi,231 : Ceratodus, 248, 

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

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



y Y 



