8o8 



INDEX. 



Phascolarctos, 



Phascolomyidse, 



Phascolomys, 



Phascolosoma, 



Phenacodus, . 



Phoca, . 



Phocsena, 



687 

 686 

 687 

 224 

 701 

 717 

 709 



Phocidoe, . . . .716 



Pholas, 372 



Phoronidea, .... 224 

 Phoronis, .... 225 

 Phronima, . . . .278 

 Phrynosoma, . . . -577 

 Phrynus, . . . . 331 

 Phyllopoda, .... 269 

 Phyllopteryx, . . . 511 



Phyllosoma, .... 278 

 Phylloxera, .... 305 

 Phylogeny, .... 70 

 Physalia, . . . .156 

 Physeter, .... 709 

 Physiology, . . . 14, 731 



,, History of, . 16-17 



Physoclisti, .... 495 

 Physostomi, .... 503 

 Phytoptus, .... 336 

 Phytozoa, . . . .129 

 Pia mater, .... 438 



Pica, 711 



Pigs, 694 



Pigeon, ..... 599 

 Pigeon's milk, . . . 608 

 Pigments, .... 746 



Pilema, 148 



Pilidium larva, . . .176 



Pineal body, . . . -437 



,, in Hatteria,, . 437 



.,, in Iguana, . . 437 



Pinnipedia, . . . .716 

 Pinnotheres, . . . 279 



P |P a > 556 



Pipe fishes, . . . . 511 

 Pipistrelle, . . . .721 

 Pisces, see Fishes, . . 4, 475 

 Pisiformis, . . . 175 



Pithecia, .... 725 

 Pituitary body, . . . 436 

 ,, Hypotheses regarding, . 436 

 Placenta, Hints of a, before 



Mammalia, . 59 1 



PAGE 



Placenta of Mammals, . . 648 

 Placentation, Classification of, 655 

 Placoid scales, . . . 478 

 Plagiaulax, .... 640 

 Plagiostomata, . . . 505 

 Plakina, . . . .125 



Planaria, . . . 162, 163 

 Planorbis, ... 76, 358 

 Plantigrade, . . . . 714 

 Plants and Animals, . 17-19 



Planula larva, . . .141 

 Plasmodium, . . . 98, 112 

 Plasticity of Organisms, . 83 



Plastidules, . . . .71 

 Plastron, . . . 563, 565 

 Platanista, .... 709 

 Plathelminthes, . . ' .162 

 Platydactylus, . . -577 

 Platyrrhini, .... 725 

 Plecoptera, .... 305 

 Plectognathi, . . . .511 

 Plesiosaurus, .... 592 

 Pleura of Crayfish, . . 257 



Pleural membrane, . . 674 



Pleuracanthus, . . . 506 

 Pleurobranchs of Crayfish, . 264 

 Pleurodont teeth, . . . 570 

 Pleuronectidse, . . . 522 

 Pliosaurus, .... 59 2 

 Ploughshare bone, . . .601 

 Plumularia, . . . . 155 

 Pluteus larva, . . 236, 249 

 Pluvianus, .... 588 

 Pneumatic bones, . . . 623 

 Pneumoderma, . . . 358 

 Pneumodichthydae, . .528 

 Pneumogastric nerve, . .441 

 Podical plate of Cockroach, . 295 

 Podobranchs of Crayfish, . 264 

 Podophthalmata, . . . 278 



Podura, 305 



Poison gland of Snakes, . 582 



Polar globules, ... 60 



in Earthworm, 197 



,, in Vertebrates, 463 



Pole cat, . . . .716 



Polia, 1 80 



Polian Vesicle (Holothuria), . 242 



Polychaeta, . .187, 201, 209 



Development of, . 206 



