INDEX 



757 



Peristomium of Nereis, 177 

 Peritoneal cavity, 321 

 of rabbit, 420 



funnel, 334, 615 

 Peritoneum, 420 

 Peritrophic membrane, 233 

 Perivisceral cavit}'- of Ascaris, 135. 

 See also Coelom and Haemo- 

 coele 

 Perla, 250 



Pernicious malaria, 72 

 Pes, 418 



Petrobius maritimus, 249 

 Phagocytes, 137, 151, 191, 247, 525 

 Phalanges, 359, 405, 418 

 Phalangida, 223 

 Pharynx of Ascaris, 137 



of dogfish, 322 



of earthworm, 162 



of frog, 365 



of lancelet, 303 



of liver fluke, 119 



of leech, 182 



of Nereis, 178 



of rabbit, 440 



of vertebrates, 593 

 Phenotype, 685 

 Phobotaxis, 51 

 Phoca, 489 

 Phoccena, 487 

 Photosynthesis, 21 

 Phthirus pubis, 148, 253 

 Phyla, definitions of, 708 

 Phyllopodium, 198, 221 

 Phylum, 25, 708 

 Physalia, 112 

 Physiological division of labour, 



16 

 Physiology, 24 

 Phytomastigina, 79 

 Pia mater, 386, 533 

 Pieces, intercalary, 316 

 Pieris brassicce, 256 

 Pig, fore-leg of, 493 

 Pigeon, 392 



alimentar}^ S3'-stem of, 406 



arteries of, 411 



blood vessels of, 410 



digestion in, 408 



external features of, 392 



feathers of, 393 



flight of, 397 



limbs of, 404 



nervous system of, 415 



respiratory organs of, 408 



sense organs of, 415 



skeleton of, 400 



skull of, 402 



Pigeon, urino-genital organs of, 413 



veins of, 412 



wing of, 392 

 Pigment cells of eye of crayfish, 213 

 of retina, 534 

 of skin of frog, 349 

 of skin of mammals, 508, 527 



spot of Euglena, 40 

 of Polytoma, 37 

 Pigs, 492 

 Pinacocytes, 83 

 Pineal body or organ, 608 

 of frog, 387 

 of rabbit, 461 



stalk in dogfish, 336 

 Pinna, 417, 518 

 Pipistvellus pipistrellus, 478 

 Pisces, 544 

 Pisum sativum, 680 

 Pituitary body, 608 



function of hormones of, 313, 

 349, 414, 471 



of chick, 656 



of dogfish, 336, 344 



of frog, 349, 367, 387 



of rabbit, 427, 461 



of tadpole, 640 

 Placenta, 457, 668 

 Placentaha, 474 

 Placodermi, 544, 552 

 Placoid scales, 313 

 Plague, 260 

 Planavia, 132 

 Plant cells, 20 

 Plantar surface, 418 

 Plantigrade, 419, 476, 479, 483, 489 

 Plants, differences between animals 



and, 19 

 V\di.nvi\3. oi Aurelia, 114 



of Obelia, 107 



of sea-anemones, 115 

 Plasma of blood, 524 

 Plasmagel, 28 

 Plasmagenes, 705 

 Plasmalemma, 26, 29 

 Plasmasol, 28 

 Plasmodium, 69, 80 



cynomolgi, life-cycle of, 75 



falciparum, 71, 72, 74, 76 



malaricB, 72, 74, 156 



ovale, 72 



vivax, 69, 70, 72, 74, 152, 156 

 Plasmogamy, 6 

 Plastogamy, 35 

 Plate, cribriform, 427, 574 



embryonic, 664 



epicranial, 228 



gill. 635 



