720 



INDEX 



Primitive groove, 290, 437 



Primitive knot, 364* 



Primitive streak, of Aves, 437 



Prixtiophorus, 170 



Pristis. 170 * 



Pristiurus, 182, 183 



Pro-amnion, 438* 



Pro-atlas, 343* 



Proboscidea, 483*, 536, 540, 544, 606 



Proboscis, of Balanoglossus 3, 4 : Cepha- 



lodiscus, 10, 11, 12 : RhalKlopleura, 



13 



Proboscis-cavity, 3, 4, 12, 13 

 Proboscis-pore, 3, 4, 10, 12 

 Proboscis-skeleton, 4, 6 

 Procellaria, 425 

 Processus gracilis, 455* 

 Procoelous, 266* 

 Pro-coracoid, 84*, 320 

 Proctodseum See Digestive s\ 7 stem 

 Pronatiori, 455 

 Pronephric duct, 117*, 119 

 Pronephros, 117*, 119 

 Prongbuck, 598 

 Pro-otic, 79*, 80 See Skull 

 Propterygium, 151*, 175 

 Prosencephalon, 100*, 157 See Brain 

 Prosimii, 486*, 508, 552, 555, 556, 570, 



600 



Prosocosle, 100 See Brain 

 Prostate, 474 



Protective resemblance, 657* 

 Proteus, 293, 296, 300, 308, 637 

 Proteus anguineus, 300 

 Protochordal plate, 364, 365*, 438 

 Protocone, 561* 

 Protoconid, 561* 

 Protoplasm, 679 



Protopterus, 246, 257, 258, 259, 630 

 Protoselachii, 169* 

 Prototheria, 477*, 491, 492, 514, 515, 



516-521, 573, 597, 602 

 Protovertebra, 58, 61, 122, 184 

 Protriton, 302 



Proventriculus, of Pigeon, 3^6, 397* 

 Psalterium, of brain, 470* : of stomach, 



571* 



Psammapilidium, 26 

 Psammosteidcv, 261* 

 Psephurus, 219, 242] 

 Pseudis paradoxa, 310 

 Pseudobranchia, of Dogfish, 154: Elasmo- 



branchii, 178 : Trout, 212 : Teleostomi, 



235 : Ceratodus, 251 

 Pseudocoele, 470* 

 Pseudophycis backus, 237 

 Psittaci, 416, 445 



Pxlttaciw, 416, 420, 422, 428, 434, 443 

 Ptarmigans, 424 

 Pteraspidff, 261, 262* 

 Pteraspis rostrata, 261 

 Pterichthys, 263, 264 



Pterobranchia, 3*, 9, 10, 11, 12, 13 



Pt erodes, 416 



Pterocletes, 416 



Pterodactyles See Pterosauria 



Pterodactyl-it*, 376 



PteropidcK, 485 See Flying Foxes 



Pteropus J'USCMS, 552 



PteropHsjubatux, 551 



Pterosauria, 337*, 375, 376, 377 



Pterotic, 204, 205 



Pterygiophores, 71, 81* See Fins 



Pterygoid, 80, 81* See Skull 



Pterygopodia, 171* 



Pteryla?, 384* 



Pterylosis, of Pigeon 384, 385* : Aves, 

 422 



Ptychodera, 5 



Pubic symphysis, 322* 



Pubis, 83, 84* See Pelvic arch 



Pubo-ischial region, 84* 



Puffins, 443 



Pu/inns, 368, 415 



Pulmonary aponeurosis, 398*, 399 



Pulmonary artery and vein, 95 : nerve, 

 106 



Pupil, of eye, 110 



Purkinje, 679 



Pygal plates, 344* 



Pygochord, 6 



Pyyopidw, 369 



Pygopodes, 414, 444, 445 



f'yyopu* lepidopm, 339 



Pygostyle, of Pigeon, 387* 



Pyioric cca, of Trout, 210, 211 : Teleo- 

 stomi, 234 



Pyioric valve, 210 



Pylorus 152* 



Pyrosoma, 23, 28, 29, 31, 39, 43 



Pyrosomata, 23* 



Pyrosomidw, 23 



Pyrotherium, 606 



Pythonomorpha, 335*, 377, 378 



Pythons, 335, 339, 343, 353, 367, 368 



Q 



, 77, 78*, 80, 81 See Sku 

 Quadrate jugal, 270, 2&6 

 Quadratojugal arch, 319 

 Quadrupedal, 516* 

 Quagga, 630 

 Quills, 506* 

 Quoy, 683 



R 



R 



JABBITS, 484 See Lepus ouniculus 

 Rachis, 381* See Feather 

 Radiale, 83* See Limb-skeleton 

 Radialia, radial cartilages, 81*, 82 See 



Limb-skeleton 



