INDEX 



609 



Peritoneal cavity, 421, 444. 

 Peritoneum^ 27. 

 Perivisceral cavity, 230. 

 ccelomic, 230. See also Ccelom 

 (perivisceral), Pericardial 

 cavity (except cockroach 

 and crayfish), Peritoneal 

 cavity, Pleural cavities, 

 Pleuroperitoneal cavity. 

 haemocoelic, 230. 

 of Arthropoda ( = open blood 

 vascular system), 267, 515. 

 of Ascaris, 296. 

 of cockroach, 273, 278. 

 of crayfish, 249. 

 of Nematoda, 309, 516. 

 Petromyzon, 377, 517. 

 Phagocytes, 100. 

 Pharynx, oi Amphioxus, 330. 

 of dogfish, 350, 353. 

 of earthworm, 219. 

 of frog, 47. 

 of rabbit, 441. 

 Philosophical questions, 12, 79, 



55o. 

 Phthirus mguinalis, 289, 290. 

 Phyla, definitions of, 513-517. 

 Phylum, 513. 



Physiological division of labour, 18. 

 Physiology, 21. 

 Pia mater, 68. 

 Pieces, intercalary, 346. 



Pig. 463. 465, 467- 

 Pigeon, 396. 



alimentary system of, 410. 



blood vessels of, 415. 



excretion and reproduction of, 

 414. 



external features of, 397. 



feathers of, 399. 



musculature of, 408. 



nervous system of, 417. 



respiratory organs of, 411. 



skeleton of, 402. 



skull of, 406, 407. 

 Pisces, 374, 377. 51 7- 

 Plaice, 382, 383. 

 Planaria, 209. 

 Plantigrade, 464. 

 Plants, differences between ani- 

 mals and, 531. 



Planula, 179. 



of anemones, 186. 



of Aurelia, 187. 



of Obelia, 179. 

 Plasmodium, 119, 151. 

 P. falciparum, 153. 

 P. malarice, 153. 

 P. vivax, 153. 

 Plasmogamy, 119. 

 Plate, epicranial, 272. 



neural or medullary, 479, 491. 

 Plates, podical, 276. 

 Platyhelminthes, 201, 514. 

 Pleura of crayfish, 240. 

 Pleurae of rabbit, 421. 

 Pleural cavities, 421, 441. 

 Pleurobranchia, 258. 

 Pleuroperitoneal cavity, 52, 350, 



421, 444. 

 Plexus, anterior choroid, 72. 



hepatic, of Amphioxus, 337. 



nephridial, of Amphioxus, 334. 



posterior choroid, 71. 



solar, 455. 



sympathetic, 74. 

 Podobranchia, 258. 

 Polycheeta, 515. 

 Polyp, 162. 



body of Hydra, 162. 



of anemones, 184. 



of Acalephae, 186. 



of Obelia, 174. 

 Polytoma, 122, 168, 191, 193, 513, 



S34- 

 P. uvella, 122. 

 Pores, abdominal, 341. 



spermathecal, 217. 

 Postpatagium, 401. 

 PostzygapophySes, 29. 

 Pouch, genital, of cockroach, 276. 



abdominal, of marsupials, 461. 

 Practical work, 551. 



on Amceba, 561. 



on Ascaris, 57°- 



on Balantidium, 561. 



on cod, 574. 



on cockroach, 568. 



on crayfish, 569. 



on dogfish, 573. 



on earthworm, 5°5' 



on Entamceba, 561. 



