INDEX 



813 



Pericardium (cont.) 



Lampetra, 91. 

 Periophthalmus, 250. 

 Periptychidae, 701. 

 Perissodactyla, 722. 

 Perodicticus, 613. 

 Petaurista, 657. 

 Petaurns, 567. 

 Peters, J. L., 516. 

 Petrel, 517. 

 Petromyzon, 121. 

 Pliacochoerus, 749. 

 Phalacrocorax, 517. 

 Phalangers, 567. 

 Pharynx, amphioxus, 30. 



Balanoglossus , 52. 



Cephalodiscus, 58. 



Ciona, 61. 



elasmobranchs, 145, 157. 



evolution of, 75. 



hag-fishes, 123. 



Lampetra, 89, 1 17. 

 Phascolarctos, 567. 

 Pheasant, 501, 518. 

 Phenacodus, 700. 

 Phillipson, A. T., 743. 

 Phiomia, 715. 



Phobotaxis, amphioxus, 41. 

 Phoca, 691. 

 Phocaena, 673. 

 Phoenicopterus, 517. 

 Pholidophorus, 236. 

 Pholidota, 601. 

 Phoronis, 49, 58, 75. 

 Phororhacos, 518. 

 Phosphate, in sea, 286. 

 Photocorynus, 265. 

 Photomechanical changes, Lampetra, 



103. 

 Photoreceptors, see Eyes. 

 Phototropism, amphioxus, 40. 



tunicates, 64, 69. 

 Phoxinus, 210, 221. 

 Phrynosoma, 409. 

 Phyllospondyli, 296, 361. 

 Physeter, 674. 

 Phytosauria, 417. 

 Picus, 521. 

 Pigeon, see Columba. 

 Pigeons, homing, 493. 

 Pigments, blood, amphibia, 339. 



birds, 436, 470. 



Lampetra, 92. 



mammals, 604, 618. 



tunicates, 62. 

 Pigs, 748. 



Pike, 237, 247, 251. 

 Pilosa, 597. 

 Pinaroloxias, 527. 



Pineal, actinopterygii, 209. 



amphibia, 332, 349. 



elasmobranchs, 167. 



Lampetra, 103. 



ostracodcrms, 125, 127, 129. 



reptiles, 384, 402. 

 Pinnipedia, 691. 

 Pipa, 354, 360, 365. 

 Pipe-fish, 237, 249, 257, 266. 

 Pipistrellus, 566. 

 Pipit, 521. 

 Pit vipers, 415. 

 Pithecanthropus, 645. 

 Pituitary, actinopterygii, 206, 260. 



amphibia, 301, 341, 349. 



amphioxus, 40. 



birds, 469. 



elasmobranchs, 164. 



Lampetra, 96, 105. 



Latimeria, 272. 



reptiles, 410. 



tunicates, 65. 

 Placenta, aardvark, 704. 



artiodactyls, 745. 



bats, 591. 



carnivores, 683, 692. 



edentates, 596, 601. 



elephants, 713. 



fishes, 164, 266. 



hyrax, 708. 



insectivores, 582. 



marsupials, 560. 



perissodactyls, 723. 



primates, 606, 616, 620, 624, 630. 



rodents, 657. 



sea cows, 721. 



whales, 673. 

 Placentals, origin of, 574. 

 Placodermi, 186, 772. 

 Placodus, 400. 

 Plaice, 237, 251. 

 Planetarium, birds in, 494. 

 Plankton, cycles of, 285. 

 Platanista, 673. 

 Platax, 257. 

 Platelets, see Blood. 

 Plateosaurus, 423. 

 Platichthys, 256. 

 Platynota, 409. 

 Platypus, 549. 

 Platyrrhina, 620. 

 Platysomidae, 231. 

 Plautus, 519. 

 Play, birds', 492. 

 Plecotus, 589. 

 Plesiadapts, 613. 

 Plesianthrepus, 629. 

 Plcsiosauria, 399. 

 Plethodon, 299, 365. 



