INDEX 



963 



Protozoa, ecology of, 143. 



— functions in the, 136. 



— general interest of, 150. 



— history of the, 144. 



— immortality of, 151. 



— reproduction in, 62, 140. 



— structure of, 139. 



— survey of the, 130. 

 Protozoaea, 359. 

 Proventriculus, 747. 

 Proviverra, 873. 

 Provortex, 214. 

 Psalterium, 850. 

 Psephurus, 638. 

 Pseudaxonia, 201. 

 Pseud-hcemal system, 296. 

 Pseudobranch, 623. 

 Pseudolamellibranchia, 480. 

 Pseudonavicellae, 124. 

 Pseudopodia, no. 

 Pseudopus, 703. 

 Pseudoscorpionidae, 416. 

 Psolus, 310. 



Psychical life of Protozoa, 139. 



Pteranodon, 721. 



Pteraspis, 586. 



Pteraster, 298. 



Pterichthys, 586, 586. 



Pterobranchia, 489, 498. 



Pterodactyl, 721. 



Pteromys, 829. 



Pteropidae 879. 



Pteropods, 475. 



Pteropus, 880. 



Pterosauria, 721. 



Pterotrachea, 474. 



Pterygota, 384, 406. 



Pterylae, 726. 



Ptyalin, 30. 



Ptychodera, 489, 490, 493. 



Ptychodus, 635. 



Puff-adder, 709. 



Pulmonata, 474. 



Pulp of mammalian teeth, 814. 



Pupa, 9, 399- 



Pupil of eye, 552. 



Purpura, 441, 474, 477- 



Pycnogonidae, 431. 



Pycnogonum, 432, 432. 



Pygostyle, 726, 739. 



Pyloric caeca of Insects, 391. 



Pyrosoma, 352, 508, 309, 514, 895. 



Python, 709. 



Pythonomorpha, 720. 



Quadrate, 534. 

 Quagga, 856. 



Rabbit, 783. 



— foetal membranes in, 828. 



— head of, vertical section of, 808. 



— scapula of, 794. 

 Raccoon, 873. 

 Radial symmetry, 41. 

 Radials of a fin, 631. 

 Radiolaria, 132. 



61* 



Radiolarian, optical section of, 135. 



Radius, 537. 



Radula of cuttlefish, 461. 



— of gasteropods, 434, 465. 



— of snail, 440. 

 Raja. See Skate. 

 Rana» See Frog. 

 Rangifer, 852. 

 Raphidiophrys, 152. 

 Rat, 829, 867. 

 Ratel, 873. 

 Ratitas, 4, 770. 

 Rattlesnake, 709. 

 Ray, 589, 634. 

 Razor-fish, 481. 



Recapitulation of ancestral history, 86. 

 Recessive characters, 91. 

 Rectal gland of skate, 601. 

 Red coral, 196, 205. 



— spider, 423. 

 Redia, 220. 

 Reducing division, 70. 

 Reed, 851. 



Reflex actions, diagrams of, 27. 

 Regularia ectobranchiata, 305. 



— endobranchiata, 305. 

 Regulation, 78. 

 Reindeer, 851, 852. 



Relative antiquity of Animals, 103. 

 Renal-portal system, 666, 749, 752. 

 Reproduction, 21, 60. 



— of Amphibia, 682. 



— of Crustacea, 356. 



— of Fishes, 628, 



— of Insects, 394. 



— of Mammals, 830. 



— modes of, 62. 

 Reproductive cells, 88 89. 



— system of Amphioxus, 523. 



of Anodonta, 453. 



of Arenicola, 262. 



of Ascidian, 505. 



of Aurelia, 186. 



-of Balanoglossus, 495. 



of bee, 382. 



of cockroach, 376. 



of crayfish, 332. 



— — of Crinoid, 314. 



of Crocodilia, 715. 



-of Distomum, 218. 



— ■ — of dogfish, 616. 



of earthworm, 252. 



sof frog, 669. 



of haddock, 626. 



of Helix, 442, 443. 



of Hirudo, 277. 



of Holothurian, 308. 



• of Hydra, 178. 



of Insects, 393. 



-of Lizards, 701. 



of Medusoid, 183. 



of Myxine, 578. 



of Nematoda, 238. 



of Nemerteans, 234. 



of Peripatus, 364. 



of Petromyzon, 583. 



