INDEX 



557 



Pagurus bernhardus, 231. 



Palaeontology, 10. 



Palate, 505. 



Palatine bone, 414, 499. 



Pallial line, 267. 



Pallium, 266. 



Palpi, of annelid worms, 189; of mol- 

 luscs, 271, 282. 



Palpus of insectsg'2^2. 



Palythoa, 89. %^£ 



Pancreas, 69, 344, 346, 375, 418, 507; 

 of birds, 476. 



Pancreatic appendages of molluscs, 



307- 

 Papilla, adhesive, of nemertean 



worms, 146. 

 Papulse of starfish, 159. 

 Paraglossae of insects, 243. 

 Paralichthys dentatus, 398. 

 Paramcecium caudatum, 45, 47. 

 Paramylum, 36. 

 Parapodia of annelids, 189. 

 Parasitic worms, 156. 

 Parasphenoid bone of frogs, 413. 

 Parietal bones of frogs, 413. 

 Parthenogenesis, in insects, 250; in 



Rotifers, 180. 

 Patagium, 541. 



Patella, 292; of mammalian leg, 503. 

 Pearl, mother of, 269; mussel, 265, 



280 ; oyster, 280. 

 Pebrine, 58. 

 Pecten, 280; of eye of bird, 480, 



489. 

 Pectines of scorpion, 257. 

 Pedalion, 180. 

 Pedicellina, 181, 184. 

 Ped ice 11 arias, 159. 

 Pedicles, 537. 



Pedipalpi, 256; of spider, 259. 

 Peduncle, 120. 

 Pelagic animals, 291, 308. 

 Pelecypoda, 265, 278, 280. 

 Pelomyxa, 19. 

 Pelvic arch, 445. 

 Pelvic fin, 374, 406. 

 Pelvis of mammalian kidney, 518. 



Penis, of fluke-worms, 130; of mam- 

 mals, 520; nematoid worms, set?e 

 of, 149. 



Pennatula aculeata, 120; sulcata, 121. 



Pen of cuttle-fish, 301. 



Pentacta frondosa, 173, 



Peptones, 346. 



Peramelidse, 528. 



Pericardium, 295; of frog, 419; of 

 molluscs, 271. 



Perilymph, 383. 



Periostracum, 268. 



Periotic bones, 499, 



Peripatus, 236. 



Periplaneta americana, 242. 



Perisarc, 94.' 



Perissodactyla, 538. 



Peristome, 52, 163, 287. 



Peristomium, 189. 



Peritoneum, 347; of annelid worms, 

 197. 



Pinna, auditory, 333. 



Pinnipedia, 540. 



Pinnules of crinoids, 176. 



Pipe fish, 404. 



Pisces, 365, 394; teeth of, 402. 



Placenta, 360. 



Placophora, 284. 



Plaice, 397. 



Planaria, lugubris, 138; polychroa, 

 138 ; torva, 138. 



Plankton, 12. 



Planorbulina, 25. 



Planula, 98, no. 



Plates, in reptiles, 443. 



Platyhelminthes, 129, 



Platypus, 525. 



Pleopoda, 216. 



Pleural membrane, 513. 



Pleura sac, 513. 



Pleurobrachia, 128. 



Pleuronectes cynoglossus, 398. 



Pleuronectidse, 397. 



Petasus, 102. 



Petromyzon, 360; marinus, 361,363. 



Phalanges, 342, 502,530; ungual, 342. 



Pharynx, of Amphioxus, 325; of an- 



