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 insects, 242. 



Palythoa, 89. 



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

 of birds, 476. 



Pancreatic appendages of molluscs, 



Soy- 

 Papilla, adhesive, of nemertean 



worms, 146. 

 Papulae of starfish, 159. 

 Paraglossae of insects, 243. 

 Paralichthys dentatus, 398. 

 Paramoecium 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. 

 Pedicellariae, 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, setae 

 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. 

 j 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. 



Pleuronectidae, 397. 



Petasus, 102. 



Petromyzon, 360; marinus, 361,363. 



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



Pharynx, of Amphioxus, 325 ; of an- 



