668 



INDEX. 



Phalansterium, 7C. 



Pharyngohranchii, 876. 



Pharyngognathi, '687. 



PJiarynx, of Ascidiaiis, 288. SSfl ; of Lanoe- 

 let, 377. 



Phascolarctos, 332, .183. 



Phascolomys, 531. 



Phascolotherium, 6C8, 609, 810l 



Phasianidce, 4S9. 



Phasiamts, 4S9. 



Phasmidce, IS. 



Pheasant, 489. 



Pheronema, 67, 



Philine, 319. 



Phillipsia, 234. 



Phoca, 675. 



Phoccsna, 550. 



Phocidce, 675. 



Pholadidce, 277, 306, 308. 



Pholadomya, 307. 



Pholas, 305, 308. 



Plwrus, 318. 



Pliosphorescence of the Sea, 76. 



PJjvagnmcoiie, 277; of Splrula, 326, 330; 

 of Belemnite, 330, 335. 



Phragmoceras, 335. 



Phryganeidce, 261. 



Phylactolcemata, 286. 



Phyllidia, 319. 



PhyllidiadcB, 314, 319. 



Phyllirrhoe, 319. 



Phyllyrrhoidce, 314, 319. 



Phyllium, 18. 



Phyl]ocy.st, 95. 



Phyllopoda, 208; cliaractriH uf, 218; dis- 

 tribution of, in time, 234. 



PJiyllostoma, 595. 



Phyllostomidce, 594, 595. 



Pliyogenimaria, 98. 



Physa, 319. 



Physalia, SO, 93, 97, 98. 



PhysaliadcB, 100. 



Physalus, 518. 



Physeter, 549. 



Physeteridce, 548. 



Physiology, 13. 



Phystyphora, 98. 



Physophoridce, 93; characters of, 97, 98; 

 tentacles of, 07; revioduction of, OS; 

 distribution of, in space, 113. 



Physostomata, 383. 



Picidce, 493. 



Pigeons, 491, 



Pigment-spot, of Iti/usuria, 75; of /?o(i- 

 /cra, 182. 



PlUolus^ 318. 



Pileopsis, 318. 



Pimium, 174, 175. 



Pinna, 305, 306. 



Pinnigrada, 574, 675. 



Pinnipedia, 574. 



Pinnoctoptis, 335. 



P/^a, 414, 416. 



Pipo-fish, 388. 



Pip idee, 416. 



Places, 359, 360; general characters or, 

 362; scales of, 362; skeleton of, 363- 

 3G9; limbs of, 367; tail of, 370; digestive 

 system of, S73 ; rcspirntoiy system 

 of. 371; heart of, 372; swim-bladder of, 

 374 ; nervous system of, 374; repro- 

 ducitivc system of, 374 , orders of, 370- 



402 ; distribution of, in time, 402- 

 405. 



Placenta, 610, 522, 



Placentalia {Mammalia), 522. 



Placodus, 448. 



Placoganoidei, 391, 392, 403. 



Placoid (scales of Fishes), 3o3. 



Placoideit 394. 



Plagiaulax, 608, 610. 



Plagiostomi, 395; characters of, 3W. 



Planarida, 173, 174, 183. 



Planorbis, 312, 819. 



PZani^roda, 674, 577. 



Planula, 106, 



Plastron, 424, 425. 



Plataleadce, 4 S3. 



PZaianisia, 550. 



Platyelmia, 165 ; characters of, 166. 



PlatyrKina, 599, 601. 



Plecotus, 594. 



Plectognathi, 3S7. 



Plesiosauria, 447. 



Plesiosaurus, 447, 448. 



Pleura, of Lobster, 203; of Trilobite, 221. 



Pleuracanthus, 4(i4, 4' 5. 



Pieurobrachia, 130,131; otcnophores of, 

 130 ; canal-system of, 131, 132 ; develop- 

 ment of, 132; homologies of, J 33. 



Pleurobrackiadce, 134. 



PleurobrancJddce, 314, 319. 



PUurobranchus, 319. 



Pleuroneetidce, 386, 398. 



Pleuronema^ 76, * 



Pleurotoma, 317. 



PieuroiomaWa, 318. 



Pliolophiis, 613. 



Pliopithecus, 617. 



PtoHis, 478. 



Plough-share bone, 457. 



Plutnaster, 164. 



Plumularia, 92. 



Pluteus, 143, 144, 148. 



Plyctolox>lms, 494. 



Pneumatic filaments of Physophoridce, 97. 



Pneumatocyst, 97. 



Pneumatopliore, 97, 98, 



PneM7nodcn?ion, 321. 



Podargus, 500. 



Podophthalmata, 208; characters of, 227. 



Podosomata, 239. 



Podura, 250, 258. 



Polistes, 33. 



Polyarthra, 183. 



Polycoelia, 139. 



Polycystina, 61, 82. 



Polydesmus, 247. 



PolygasiHca (of Ehronberg), 71. 



Polynoe, 197. 



Polypary, 85, 89, 00. 



Polype, 116. 



Polypide, 280, 281. 



Polypidom, 82." 



Polypite, 81. 



Polyplectron, 489. 



Polypterus, 391. 



Polystome Infusoria, 76. 



Polythalamia (Foramini/em), 65. 



Polytrema, 59. 



Polyxenia, 102. 



Polyzoa, 274, 275, 276 ; characters of, 279; 

 distinctions from Ilydrozna, 270, 230; 

 typical polypide of, 281; avieularia of, 



