942 



INDEX 



Proteoses, 385 

 Proteroglypha, 556 

 Proterospongia, 119 

 Prothorax, 305, 345, 357 

 Prothrombin, 395 

 Protobranchiata, 256 

 Protogynous condition, 245 

 Protons, 697 



Protopipa, Amazonian frog, 480 

 Protoplasm, 49 



and the cell, 49 



characteristics, 53 



chemical nature, 56 



fundamental activities, 54 



physical nature. 55 



structure, 53 

 Protopodite, 270 

 Protopterus, 455 

 Prototheria, subclass, 616 

 Prototracheata, division, 265 

 Protozoa, 25 



classification, 65 



colonial, 75 



economic relations, 77 



phylum of, 65 

 Protractor muscle. 249 

 Proventriculus, 601 

 Prozoea, 285 

 Psalterium, 633 

 Pseudacris, 486 



ocularis, 473 



streckeri, 482 

 Pseudemys, 549 



troostii elegans, 577 

 Pseudobranchus stria tus, 485 

 Pseudococcus maritimus, 316, 318 

 Pseudocoel, 181 



Pseudogryphus calif ornianus, 589 

 Pseudolamellibranchiata, 257 

 Pseudophyllidea, order, 161 

 Pseudopodia, 67, 70, 86 

 Pseudopodiospore, 90 

 Pseudoscorpionida, order, 266 

 Psittaciformes, order, 591 

 Psocids, 333 



Psychichthys afflnis, 425 

 Psyllid, 316 



Pteronarcella bodia, 321 

 Pteroplatea micrura, 425 

 Pteropods, 258 

 Pterosauria, 546 

 Pterotic bones, 466 

 Pterygoids, 465, 517, 643 

 Pterygoquadrate, 465 

 Pterygota, subclass, 309, 313 

 Pterylae, 601 

 Pubis, 521 



Pulmocutaneous arch, 507 

 Pulmonary veins of frog, 510 

 Pulmonata, 258 

 Pulmonate snails, 238 

 Pulvillus, 347 

 Pulvinaria vitis, 318 

 Puma, 629 

 Pupa, 330 



Pupil of frog eye, 529 

 Pupipara, 331 

 Pupoides marginatus, 240 

 Purkinje, 49 

 Pycnogonids, 292 

 Pygidium, 316 

 Pygostyle, 582, 609 

 Pylangium, 511 / 

 Pyloric caeca, 228, 229, 459 



chamber, 272 

 Pyralididae, family, 327 

 Pyrenoid bodies, 81 

 Pyridoxine, 389 



Q 



Quadrate bone, 465, 467 

 Quadratojugal bone, 517 

 Quadratopterygoid, 428 

 Quadroon, 829 

 Quadrula forsheyi, 248 

 Quadrupeds, 616 

 Quadruplets, 621, 622 

 Quail, 590, 794 

 Quantum, 698 



R 



Rabbits, 625 



cotton tail, 627 



jack, 625, 626 



swamp, 627 

 Raccoon, 629, 788 

 Race runners, 554 

 Racemose bodies, 230 

 Rachis, 601 

 Radial canals, 124 



cleavage, 802 



nerve, 229 

 Radiata, 217 

 Radiations, 697 

 Radio waves, 701 

 Radioactive atom, 698 

 Radiolaria, 69, 78 

 Radium radiation, 708 

 Radula of snail, 243 

 Rails, 591 

 "Rain crow," 591 

 Raja erinacea, 424 

 Rana catesbeiana, 497 



grylio, 497 



pipiens, 486 

 Range of wild animals, 789 

 Rangifer caribou, 630 

 Ranidae, family, 486 

 Rapliidiidae, family, 322 

 Rat, Banner-tail kangaroo. 624 

 Ratitae, subclass, 584 

 Rats, 622, 625 

 Rattlesnakes, 556, 559 

 Rattus, 625 

 Ray, butterfly, 424 

 Rays, 424 

 Reason, 853 



Recapitulation tlieory, 284, 869 

 Recessive, 45 

 Rectal caeca, 229, 233 

 Rectus abdominis, 524 

 Red corpuscles, 395 

 Rediae, 758, 759 

 Red-legged locust, 310 

 Reduction division, 114 

 References, bibliographic, 889 

 Reflex arc, 405 



behavior, 850 



circuit, 400 

 Reflexes, 852 

 Regeneration, 681 



earthworm, 211 



in amphibia, 477 



in chordata, 688 



in hydra, 156 



in planaria, 173 



in platyhelminthes, 683 



of starfish, 234 

 Regenerative capacity, 681 

 Reichenbachia, 340 

 Reindeer, 630 



Relations of animals and plants, 27 

 Remoras, 454 

 Renal corpuscles, 650 



portal system, 509 

 vein, 434, 491 



I 



