INDEX 



745 



Pharynx-sheath, 96 



Phascolarctus, 663 



Phascolomyidae, 663, 718 



Phascolomys, 663, 718 



Phasianus, 634 



Phasma, 251, 280 



Pheasant, 634 



Phoca, 679, 722 



Phocaena, 681, 722 



Phocidae, 679, 722 



Phoenicopterus, 634 



Pholas, 308 



Phoronis, 173 



Phosphorescence, 216 



Phryganea, 253, 281 



Phrynosoma, 587 



Phylactolaemata, 378, 379 



Phyllium, 251 



Pfiyllodromia, 233, 244 



Phyllopoda, 205, 277 



Phylloxera, 257 



Phylogeny, 14 



Phylum, 11, 13 



Physalia, 67 



Physaliidae, 67 



Physeter, 681, 722 



Physiology, 10 



Physophoridae, 67 



Phytoptus, 269 



Picus, 635 



Pigeon, 617, 622, 625, 626, 635 



Pigment epithelium, 422 



Pigs, 691 



Pilchard, 490 



Pilidium, 116 



Pilot-whale, 681 



Pine marten, 677 



Pineal body, 416 



Pineal eye, 449 



Pinna, 641 



Pinnipedia, 678, 721 



Pipa, 558, 561 



Pipistrelle, 708 



Piroplasma, 45 



Pisces, 450, 452; classification :>f, 



512 



Pituitary body, 414, 416, 427, 444 

 Pit-vipers, 591 

 Placenta, 412, 656, 664 

 Placoid scales, 453 

 Plaice, 494 

 Planaria, 99, 100 



Planorbis, origin of mesoderm, 135 

 Plantigrade, 669 

 Plant-louse, 248, 254, 257 

 Plants and animals, 2, 25, 36 

 Planula, 65 

 Plasmodium, 28 

 Plastron, 591, 592 

 Platyhelminthes, 92 ; classification 01, 



111 

 Platypus, 656 



Platyrrhini, 710, 726 



Plecotus, 708 



Pleopods, 214 

 Plesiosauria, 604 



Plethodon, 544, 561 



Plethodontinae, 544 



Pleur acanthus, 460, 470 



Pleural ganglia, 293 



Pleural membrane, 236 



Pleurobranchs, 187 



Pleuronectes, 494, 515 



Ploima, 126 



Plover, 635 



Plumatella, 377 



Pneumogastric nerve, 427- 



Pocket valves, 431 



Podical plates, 237 



Podiceps, 634 



Podobranchs, 187 



Podocopa, 209, 277 



Poikilothermal, 638 



Poison-glands, 114 



Polecat, 676 



Pole-cells, 134 



Polian. vesicles, 334, 350, 359 



Polistes, 256 



Pollack, 495 



Polian, 490 



Pollex, 551 



Polychaeta, 158, 166 



Polyclada, 98, 99, 112 



Polyodon, 473, 502, 517 



Polyodontidae, 517 



Polyp, 49, 50, 62, 71 



Polypide, 377 



Polyprotodontia, 661, 717 



Polypterini, 473, 502, 517 



Polypterus, 502, 503, 512, 517 



Polypus, 312, 322, 325 



Polystomella, 22, 24, 25, 26, 30 



Polystomum, 103 



Polyzoa, classification of, 376 



Polyzoan colonies, 376 



Pond-mussel, 296, 299 



Pond-snail, 293 



Pond turtles, 597 



Pons Varolii, 647 



Porcellio, 224, 279 



Porcupine, 701, 705 



Pores, 85; dorsal, 141 



Porifera, classification of, 84, 85, 90 ; 



larva of, 89 

 Porocytes, 87 

 Porpoise, 681 

 Portal system, 433, 462 

 Portal vein, 462 

 Portuguese man-of-war, 67 

 Post-axial, 521 

 Posterior gastric muscle, 189 

 Postfrontal, 574 

 Postpubis, 577 

 Post-temporal fossa, 575 



