INDEX. 



699 



Pedicdlinea, 306. 



Pediculus, 277. 



Pedipalpi, 261. 



Pelagia, 115, 120. 



Pdagida 1 , 114, 115; structure of genera- 

 tive zooids of, US. 



Pelias, 457. 



Pelicanidce, 505. 



Pdonaia, 296. 



Pen, of Cuttle-fishes, 349, 351. 



Peneus, 247. 



Penguin, 502, 5C3. 



Peniculus, 227. 



Pennatula, 138, 139. 



Pennatulidce, 137, 138 ; distribution of, in 

 time, 147. 



Pentacerotidce, 168. 



Pentacrinus, 174, 181. 



Pentamera (Coleoptera), 292. 



Pentamerus, 317. 



Pentastomida, 259. 



Pentatoma, 279. 



Pentremites, 180, 181. 



Peramelidce, 562. 



Peranema, 83. 



Perchers, 522. 



Percidce, 411. 



Perdicidce, 516. 



Perdia;, 516. 



Perennibranchiata (Amphibia), 431, 432. 

 435, 436. 



Perforata (Foramin'ifera), 59, 63; (Corals), 

 135, 151, 152. 



Pericardium, of Crustacea, 219, 225; of 

 Nautilus, 354. 



Periderm, 99. 



Peridinium, 83. 



Perigastric space, of Polyzoa, 304. 



Periostracum, 297. 



Perischoechinidce, 182. 



Perissodactyla, 582. 



Peristome. of Forticella, 79 ; of the shell 

 of Gasteropoda, 33 J. 



Peristomial space of Actinia, 128. 



Peritoneum (Tunicata), 30s. 



Perivisceral space, of Actinozoa, 126. 



Perna, 325. 



Petaurus, 562. 



Petr aster, Is 2. 



Petrogale, 561. 



Petromyzon, 403, 404. 



Petromyzonidfe, 402, 404. 



Petrospongiadw, 75. 



Pezophaps, 519, 536. 



Pezoporince, 521. 



Phacochcerus, 587. 



Phwnicopteridce, 506. 



Phcenicopterus, 507- 



Phaeton, 505. 



Phalacrocorax, 505. 



Phalwna, 275. 



Phalangers, 562. 



Phalangidce, 260. 



Phalangistidce, 562. 



Phalansterium, 83. 



Pi-aryngobranchii, 400, 427. 



Pharyngognathi, 411. 



Pharynx, of Ascidians, 308, 309 ; of Lance- 

 let, 401. 



Phascolarctos, 560, 561, 



Phascolomys, 559. 



Phascolotherium, 639, 610, 641. 



Phasianidce, 516. 



Phasianus, 516. 



Phasmidw, 19. 



Pheasant, 516. 



Pheronema, 74. 



Philine, 341. 



Phillipsia, 253. 



Phoca, 606. 



Phoccena, 578. 



Phocidce, 606. 



Pholadida>, 29, 327, 329. 



PhoJadomya, 328. 



PAoZas, 32t5, 328. 



Phorus, 340. 



Phosphorescence of the Sea, 83. 



Phragmacone, 296 ; of Spifula, 349, 352 ; 

 of Belemnite, 352. 



Phraff/noceras, 358. 



Phryganeidaz, 281. 



Phylactolcemata, 306. 



Ph,,lUdia, 841. 



J'hyilidiadce, 33^?, 341. 



Phyllirrhoe. 341. 



Phyllirrhoidce, 336, 341. 



Phyllium, 19. 



Phyllocyst, 105. 



Phyllopoda, 226'; characters of, 237 ; dis- 

 tribution of, in time, 253. 



Phyllostoma, 6.25. 



Phyllostomidce, 624, 625. 



Phyogemmaria, 108. 



Pkysa, 341. 



Physalia, 83, 88, 103, 108. 



Physaliadce, 110. 



Physalus, 576. 



Physeter, 577. 



Physeteridce, 577. 



Physiology, 13. 



PJiysophora, 108. 



Pfiysophoriadce, 109. 



Physophoridce, 103 ; characters of, 107, 

 eisei?..; tentacles of, 107; reproduction 

 of, 108 ; distribution of, in space, 123. 



P/iysostomata, 407. 



Picidce, 519. 



Pigeons, 518. 



Pigment-spot, ot Infusoria, 82; of .RoJi- 

 /era, 201. 



Piieolus, 340. 



Pileopsis, 340. 



Pilidium, 192, 193. 



Pinna, 326, 327. 



Plnnigrada, 605, 606. 



Pinnipedia, 605. 



Pinnoctopus, 357. 



Ptpa, 439, 441. 



Pipe-fish, 412. 



Pipidce, 441. 



Pirimela, 251. 



Pisces, 383 ; general 'characters of, 386 ; 

 scales of, i'&. ; skeleton of, 387, e^seg. ; 

 limbs of, 391 ; tail of, 394 ; digestive 

 system of, 397 ; respiratory system of, 

 3b5 ; heart of, 396 ; swim-bladder of, 

 398 ; nervous system of, i&. ; reproduc- 

 tive system of, ?6. ; orders of, 400, 

 distribution of, in time, 427, cf *e#. 



Placenta, 533, 550. 



Placentalia (Mammalia), 550. 



Placodus, 475. 



Placoganoidei, 416, 417, 423. 



Placoid (scales of Fishes), 386. 



