6i6 



INDEX. 



Panopea, 285. 



Panspermy, 35. 



Pantopoda, 225. 



Paper Nautilus, 299, 303, 305. 



Papio, 556. 



Paradiseidce, 460. 



Paramoecium, 66; structure of, 66, 67; 



reproduction of, 67. 

 Parapodia, 179. 

 Parince, 462. 

 Parmacella, 296. 

 Parmophorua, 295. 

 Parra, 458. 

 Parrakeets, 458. 

 Parrots, 457. 

 Parthenogenesis, 30-32; of Ostracode 



Crustaceans, 205 ; of Insects, 30-32, 250. 

 Passerine Birds (Pa-sseres), 458. 

 Patagium, 420, 488, 546. 

 Patella, 289, 295. 

 Patellidce, 292, 295. 

 Pavo, 455. 

 Pavonince, 454. 

 Peachia, 112, 127. 



Pearly Nautilus, 299, 300, 303, 304, 307. 

 Peccary, 517, 569. 

 Pecten, 283, 284. 

 Pectunculus, 284. 

 Pedicellariae, 140. 

 Pedicellina, 263. 

 Pedicellinea, 265. 

 Pediculus, 242. 

 Pedipalpi, 227. 

 Pelagia, 100, 101, 105. 

 Pelagidce, 100, 101 ; structure of genera- 

 tive zooids of, 103. 

 PeUas, 405. 

 Pelicanidce, 446. 

 Pelonaia, 256. 

 Pen, of Cuttle-fishes, 303. 

 Penguin, 444. 

 Peniculus, 199. 

 Pennatula, 121. 

 Pennatulidce, 120, 122, 123 ; distribution 



of, in time, 133. 

 Pentacerotidce, 146. 

 Pentacrinus, 149, 150. 

 Pentamerus, 274. 

 Pentastomida, 225. 

 Pentatoma, 243. 

 Pentremites, 153, 156. 

 Perameles, 495. 

 Perchers, 458. 

 Percidce, 363. 

 Perdix, 454. 

 Perennibranchiata (Amphibia), 381, 382, 



383. 

 Perforata(Foraminiferd),51, 54 ; (Corals), 



118. 

 Pericardium, of Crustacea, 191, 197 ; of 



Nautilus, 309. 

 Periderm, 87. 

 Peridinium, 72. 



Perigastric space, ofPotyzoa, 263. 

 Periostracum, 257. 

 Perisehoechinidce, 157, 

 Perissodactyla, 513. 

 Peristome, of Vorticella, 68 ; of the shell of 



Gasteropoda, 290. 

 Peristomial space of Actinia, 112. 

 Peritoneum (Tunicata), 267. 

 Perivisceral space,of J.ciinozoa, 110. 



Petaurus, 495. 



Petraster, 157. 



Petromyzon, 357. 



Petromyzonidce, 355. 



Petrospongiadce, 64. 



Pezophaps, 456, 470. 



Pezoporince, 458. 



Phacochcerus. 517. 



Phcenicopteridce, 447. 



Phcenicopterus, 447. 



Phalacrocorax, 446. 



Phalangers, 494, 495. 



Phalangidce, 227. 



Phalangistidce, 495, 



Pharyngobranchii, 353-355. 



Pharyngognathi, 363. 



Pharynx of Ascidians, 267, 268, 269; of 

 Lancelet, 354. 



Phascolarctos, 494. 



Phascolomys, 492. 



Phascolotherium, 560, 561. 



Phasianidce, 454. 



Phasianus, 454. 



Pheasant, 454. 



Philine, 296. 



Phillipsia, 220. 



Pftoca, 533. 



Phoccena, 510. 



Phocidce, 532. 



Pholadidce, 256, 286. 



Pholadomya, 285. 



Pholas, 283, 286. 



Phorus, 295. 



Phosphorescence of the Sea, 72. 



Phragmacone, 256 ; of Spirula, 313, 306 ; 

 of Belemnite, 307. 



Phragmoceras, 312. 



Phryganeidce, 244. 



Phylactolcemata, 265. 



Phyllidia, 296. 



Phyllidiadte, 292, 296. 



Phyllirrhoe, 296. 



Phyllirrhoidce, 292, 296. 



Phyllocyst, 90. 



Phyllopoda, 198; characters of, 207; dis- 

 tribution of, in time, 220. 



Phyllostoma, 549. 



Phyllostomidce, 548, 549. 



Phyogemmaria, 94. 



P/a/sa, 296. 



Physalia, 76, 93. 



Physaliadce, 94. 



Physeter, 509. 



Physeteridce, 509. 



Physiology, 12. 



Physophora, 93. 



Physophoridce, 89 ; characters of, 92, 93 ; 

 tentacles of, 93 ; reproduction of, 93 ; 

 distribution of, in space, 108. 



Physostomata, 360. 



Picidce, 457. 



Pigeons, 455. 



Pigment-spot, of Ii\fusoria, 71 ; of 

 /era, 175. 



Pileolus, 295. 



Pileopsis, 295. 



Pilidium, 167. 



Pinna, 283, 284. 



Pinnigrada, 531. 



Pinnipedia, 531. 



Pinnoctopus, 311. 



Pipe-fish, 364. 



