704 



INDEX 



PETROMYZON, 119 : External char- 

 acters. 120, 121 : Skeleton, 121, 122, 

 123, 124 : Muscles, 124 : Digestive 

 organs, 124, 125, 126 : Respiratory 

 organs, 125, 126 : Circulatory sys- 

 tem, 126 : Nervous system, 126, 

 127, 128 : Sensory organs, 128, 129, 

 130 : Urinogenital organs, 130, 131 : 

 Development, 130, 131, 132, 133 



Petromyzon fiuviatilis, 120. 133, 501 



Petromyzon marinus, 121, 122. 125. 

 127, 130, 131 



Petromyzon planeri, 120 



Petromyzontes, 134* 



Pezophaps, 404, 413, 417 



Phcenicopterus, 403, 408 



Phaethon, 403 



Phalacrocorax, 403, 409, 605 



Phalangerido?, 465. 483, 501, 506, 510, 

 562 



Phalangers, 465 See Phalange rid se 



Phalanges, 80, 81* See Limb 



Phaneroglossa, 285 



Pharyngeal bones, superior and in- 

 ferior, 224* 



Pharyngo -branchial, 74, 76* See Skull 



Pharyngognathi, 215*, 219, 224, 236 



Pharyngo -hyal, 74, 76* See Skull 



Pharynx See Digestive organs 



Phascalarctos cinereus, 482, 545, 578 



Phascolomyidce, 481, 482, 506, 509, 545 



Phascolomys, 545, 566 



Phascolomys mitchelli, 482 



Phascolomys wombat, 509, 566 



Pl.ascolotherium bucklandi, 582, 619 



Phasianus, 403, 411 



Pheasants, 403, 411 



Phoca vituiina, 491, 531 



Phoccena, 466, 486, 501, 517, 543, 555. 

 556 



Phoccena communis, 517 



Phocidce, 470, 491, 531, 580 



Phororhacos, 401 



Phorozooid, 39* 



Phrenic veins, 452 



Phylogeny, of Birds, 430 



Physeter, 466, 501, 550 



Physoclisti, 216* 



Physostomi, 213*, 214, 216, 219, 221, 

 223, 226, 227, 228, 231, 232, 233, 236, 

 238 



Pia mater, 100* 



Picarige, 404*, 432 



Picas, 474 



Pici, 404 



Pigeon's milk, 395 



Pigeons, 404 See Columba 



Pigment -spot, 52, 53* 



Pigs, 468, 488, 519, 522, 525, 526, 527, 

 548, 580 



Pike, 190, 214 



Pineal apparatus, of Craniata, 65, 66. 



99*, 110*, 111 : Petromyzon, 128 

 Pineal body, 99* 

 Pineal eye', 99, 110*, 111, 128: of 



Lizards, 319, 320, 350, 351 

 Pineal organ, 99*, 153, 154 

 Pineal sense-organ, 65*. 66 

 Pinna, or ear, 433 

 Pinnipedia, 470*, 491, 501, 530, 531, 



551, 552, 558, 580 



Pipa americana, 285, 295, 300, 301, 302 

 Pipe-fish, 216, 234 

 Pisces, 64, 139* : Appendix, 253 

 Pisiform bone, 312, 442 See Carpus 

 Pithecanthropus, 590, 621 

 Pituitary body, of Craniata, 69, 71, 84* 

 Pituitary body, extra-cranial portion 



(Callorhynchus), 188, 189* 

 Pituitary diverticulum, 69, 84* 

 Pituitary foramen, 438* 

 Pituitary fossa, 438* 

 Pituitary pouch, Petromyzon, 128, 129, 



130 : Myxinoids, 135 

 Placenta, Salpa, 30, 39*, 40 : Rabbit, 



462 : Mammalia, 576, 577 

 Placodontia, 326, 360 

 Placoid scales, 141, 163, 166, 167 

 Placula, 31* 



Plagiaulax becklesi, 582, 619 

 Plankton, 615* 

 Plantain-eaters, 404 

 Plantigrade, 501* 

 Plastron, 329, 335 

 Platalea, 403, 408 

 Platycercus, 404, 417 

 Platypus See Ornithorhyiichus 

 Platysomus striatus, 237 

 Plectognathi, 216*, 221, 231 

 Pleistocene period, 621 

 Plesiosaurus macrocephalus, 360, 361, 



362 



Pleura, 386*, 387 

 Pleuracanthei, 163*, 182 

 Pleuracanthtis ducheni, 163 

 Pleura] ribs, 195 

 Pleurodont, 345* 

 Pleuronectes cynoglossus, 220 

 Pleuronectida?., 214, 219 

 Pleuropterygii, 162* 

 Pliocene period, 621 

 Pliohyrax, 587 

 Pliopithecus, 621 



Ploughshare -bone See Pygostyle 

 Plovers, 403, 411 

 Plumulse, 409 

 Pneumatic duct, of Trout, 204, 205 : 



Teleostomi, 229 

 Pneumatic foramina, 379, 382* 

 Pneumaticity of bones, Pigeon, 382 : 



Aves, 420 

 Pneumogastric, 101, 102*, 156, 157 



