INDEX. 



611 



Pcdipalpi, 506. 

 Pedipalpus. 4X4. 

 Pedunculata,-445. 

 Pelagia, 236, 260, 261 

 Pelodcra. ;!~>7. 

 Pelodytcs, 340, 350. 

 Peltocaris. 448. 

 Peltogaster, 447, 460 

 Pelzfresser, 568. 

 Pelzkafer. 590. 

 Pelzmotte, 582. 

 Pemphigus, 570. 

 Peueeus, 477. 

 Penella, 436. 

 Pennatula, 231. 

 Pcnnatulidte, 231. 

 Pentacriuus. 289. 

 Pentacta, 274. 

 Peiitamera, 589. 

 Pentastomidse, 408. 

 Pentastomum, 488. 

 Pentatoma, 572. 

 Peutatrematitcs, 289. 

 Perforata, 181. 232. 

 Perichondrium. 39 

 Peridinium, 196. 

 Periosteum, 41. 

 Peripatus. 514. 

 Periplaueta. 557. 

 Perischaechinidse, 295. 

 Peritricha, 205. 

 Perla, 561. 

 Perlidas, 561. 

 Petalopus. ISO. 

 Phalaugiida, 505. 

 Phanerocarpje, 255. 

 Phauero-codonic gouo- 



phore, 236. 

 Phascolosoma, 394. 

 Phasma, 557. 

 Philodina, 404. 

 Philoptcrus, 568. 

 Pholcus, 505. 

 Phora. 576. 

 Phonmis, 389. 

 Phosphorescent organs 



of insect, 536. 

 Phoxichilidiurn, 496. 

 Phreoryctes, 385. 

 Phrouima. 455. 

 Phrosina, 455. 

 Phryganea, 565. 

 Phiyganidae, 564. 

 Phrynus, 507. 

 Phthirius, 56S. 

 Phyllacanthus. 296. 

 Phyllium, 55?! 

 Phyllophorus, 278. 

 Phyllopoda, 416. 

 Phyllosomata. 471. 

 Phylloxera, 570. 



1'hylloxera, Reproduc- 

 tion of, 12s. 



Phylogeny. 122. 



Physalia, 244, 249. 



Physematium. 194. 



Physometridre. 583. 



Physophora. 248, 249. 



Physophoridif, 241, 248. 



Physopoda. 559. 



Phytophaga, 594. 



Phytophthires. 568. 



Pieris, 58."). 



Pigment of eye. 86, 88. 



Pilidium, 341. 



Pilzfliegen, 576. 



Pilzkafer, 588. 



Pilzmiicken. 578. 



Pimpla, 595. 



Pinnotheres, 47S. 



Pinnate, 270. 288. 



Piophila. 576. 



Pirates, 572. 



Pisa. 478. 



Pisces, vascular system 

 of, 64. 



Piscicola, 399. 



Planaria, 315. 



Plane, median, 27 ; sa- 

 gittal, 27 ; transverse, 

 27. 



Planipennia, 563. 



Plant-lice, 569. 



Plants and animals, 15 



Planula, 117. 124. 255. 



Plasmodium, 30. 



Platygaster, 594. 



Platygaster, larva? of .549. 



L'latyhelminthes, 309. 



I'latypezida;, 576. 



Platyscelus, 456. 



Pleopods of Isopoda, 457. 



I'leuron, 483, 525. 



Pliny, system of. 132. 



Ploteres, 572. 



Plume-moths, 582. 



I'hmmlaria, 237, 242. 



I'lusiadie. 583. 



Pluteus, 281, 282, 292. 

 294, 296. 



Pneurnatocyst, 244. 



Pneumatophore, 244. 



Pncumora, 555. 



Podocerus, 455. 



Podocoryne, 237, 241. 



Podophora, 296. 



Podophrya, 2u."). 



Podura, 554. 



PoikilotliLTinir, 74. 



Poison glands, 532. 



Polar areas of CJteno- 

 phora, 264. 



I'ulai' l.i.dy, 104. 

 I'nlian vesicles, 272. 

 Polistes, 566, 597. 

 Pollicipes, 445. 

 Polyactiiiia, 225. 

 Polybostrichus, 372,379. 

 Polycelis, 311, 315. 

 Polych;eta, 374. 

 Polycirrus, 37S. 

 Polycladus, 311. 

 Polycystidea, 208. 

 Polycystinidse, 190. 

 Polycyttaria, 196. 

 Polydesmus, 521. 

 Polydora, 382. 

 Polygastrica, 192. 

 Polygordius, 375. 

 Polymorphina, 180. 

 Polymorphism, 23, 126. 

 Polymorphism, Facts of, 



in favour of Theory 



of Descent, 152. 

 Polymorphism of social 



insects, 155. 

 Polymyaria, 345. 

 Polynoe, 379. 

 Polyoinmatidae, 5X.~>. 

 Polyophthalmus, 372. 

 Polyparia, 227. 

 Polyphemus, 422. 

 Polypoid, 211. 

 Polypomedusse, 233. 

 Polyp type, 210. 

 Polyatomea, 317, 318,322 

 Polystomella, IS 7. 

 Polystomum, 323, 324. 

 Polythalamia, 18(>. 

 Polyxenus, 521. 

 Polyzonium, 515, 521. 

 Pompilus, 597. 

 Pontobdella, 400. 

 Poiitonia, 477. 

 Porcellaua, 460, 478. 

 Porcellio, 457, 460. 

 Porifera, 21 1. 

 Porpita, 25ii. 

 Portunus, 478. 

 Postabdomen of Arthro- 



poda, 407. 



Postscutellum, 526, 591. 

 Pou de poissons, 43s. 

 Prachtkafer, 5s;. 

 Praeabdomen of Arthro- 



1 >m la, 407. 

 L'ra'stniiiium of Chseti- 



fera, 387. 

 Praniza, 459. 

 Prawns, 477. 

 Praying insect, 557. 

 Priapulus, 394. 

 Primitive streak, 115. 



