INDEX 



723 



Panorpa, 349. 



Panther, 656. 



Pantopoda, 385. 



Papilio, 352; Papilionida, 351. 



Papula, 192, 193. 



Paradisea, 617. 



Paragonimus, 162. 



Parahippus, 701. 



Paramecium, 53-62 ; anatomy, 53 ; be- 

 havior, 55; metabolism, 55; repro- 

 duction, 59. 



Paramenia, 252. 



Paramylum, 42, 43. 



Paramyxine, 420. 



PaYapodia, 233, 234, 235. 



Parapophysis, 435. 



Parapteron, 330. 



Parasites, 6, 7, 251. 



Parasilica, 345. 



Parasphenoid, 493, 494. 



Parazoa, 24, 25. 



Pareiopod, 278, 280. 



Parenchyma, 158. 



Par idee, 591. 



Paroquet, 610. 



Parrot, 591, 610. 



Parthenogenesis, 80, 212. 



Parthenogonidia, 46, 47. 



Partridge, 606. 



Passer if ormes, 591, 614, 615. 



Patella, 372, 637; Patella, 271. 



Pathogenic Protozoa, 70-71. 



Pathology, 26. 



Pauropoda, 309 ; Pauropus, 309. 



Paw, 631. 



Peacock, 631. 



Pearls, 263, 264. 



Peccary, 644, 667, 668. 



Pecten, 588; Pecten, 262. 



Pectinatetta, 185. 



Pectines, 378. 



Pectinibranchia, 258. 



Pectoral girdle, 404, 404 (see skeleton). 



Pedicellaria, 191, 192, 203. 



Pedicellina, 185. 



Pediculidce, 345; Pediculus, 345. 



Pedipalpi, 372, 378; Pcdipalpi, 381-382. 



Peduncle, 185, 186. 



Pelagia, 133. 



Pelecanidce, 590, 601. 



Pelecypoda, 242, 243, 261, 262, 263. 



Pelican, 590, 60 1, 



Pellicle, 53. 



Pclobates, 512; Pelobatida, 512, 518-519. 



Pclomedusa, 535 ; Pelomedusida, 535. 



Peltogaster, 294. 



Pelvic girdle, 404, 405 (see skeleton). 



Pen, 265, 266. 



Penaus, 297, 303-305. 



Penguin, 589, 598, 599. 



Penis, 152, 322 (see reproductive system). 



Pennae, 578. 



Pennatula, 140; Pennatulacca, 140. 



Pentaceros, 199. 



Pentacrinus, 190, 209. 



Pentastomida, 384, 385; Pcntaslomum, 

 384- 



Pentatomidce, 348. 



PeramelidcR, 649. 



Perca, 432; Percesoces, 444; Percidce, 

 444, 467. 



Perch, 432-442, 467 ; circulatory system, 

 438 ; development, 441 ; digestive 

 system, 437; excretory system, 440; 

 external features, 432; locomotion, 

 433 ; muscular system, 437 ; nervous 

 system, 440 ; reproductive system, 441 ; 

 respiratory system, 438 ; sense organs, 

 440; skeleton, 434. 



Pericardium, 406 (see circulatory system). 



Pcridinium, 47, 48. 



Perilymph, 410. 



Perinaeal pouch, 634. 



Periostracum, 245. 



Peripalus, 305, 306, 397, 308. 



Periphytta, 132, 133. 



Periplaneta, 331, 343. 



Periproct, 202, 203. 



Perisarc, 119, 120. 



Perissodactyla, 644, 671-672. 



Peristome, 191. , 



Peritoneum, 193, 219, 479, 481. 



Peritricha, 65. 



Periwinkle, 260. 



Permian, 697. 



Peromedusce, 132, 133. 



Persa, 128. 



Petrel, 590, 600, 601. 



Petromyzon, 414, 415-420; circulatory 

 system, 417, 418; development, 419; 

 digestive system, 416, 417; economic 

 importance, 420; external features, 

 415; muscular system, 416, 417; 

 nervous system, 417, 418; relation- 



