INDEX. 



611 



Pedipalpi, 506. 

 Pedipalpus, 484. 

 Pedunculata, 445. 

 Pelagia, 236, 260, 261 

 Pelodera, 357. 

 Pelodytes, 346, 350. 

 Peltocaris, 448. 

 Peltogaster, 447, 460 

 Pelzfresser, 568. 

 Pelzkafer, 590. 

 Pelzmotte, 582. 

 Pemphigus, 570. 

 Penaeus, 477. 

 Penella, 436. 

 Pennatula, 231. 

 Peunatulidas, 231. 

 Pentacrinus, 289. 

 Pentacta, 274. 

 Pentamera, 589. 

 Pentastomidas, 408. 

 Pentastomum, 488. 

 Pentatoma, 572. 

 Pentatrematites, 289. 

 Perforata, 181, 232. 

 Perichondrium, 39 

 Peridinium, 196. 

 Periosteum, 41. 

 Peripatus, 514. 

 Periplaneta, 557. 

 PerischEechinidse, 295. 

 Peritricha, 205. 

 Perla, 561. 

 Perlidas, 561. 

 Petalopus, 180. 

 Phalaugiida. 505. 

 Phanerocarpse, 255. 

 Phanero-codonic gono- 



phore, 236. 

 Phascolosoma, 394. 

 Phasma, 557. 

 Philodina, 404. 

 Philopterus, 568. 

 Pholcus, 505. 

 Phora, 576. 

 Phoronis, 389. 

 Phosphorescent organs 



of insect, 536. 

 PhoxichiMdium, 496. 

 Phreoryctes. 385. 

 Phronima. 455. 

 Phrosina, 455. 

 Phryganea, 565. 

 Phryganidse, 564. 

 Phrynus, 507. 

 Phthirius, 568. 

 Phyllacanthus. 296. 

 Phy Ilium, 557. 

 Phyllophorus, 278. 

 Phyllopoda, 416. 

 Phyllosomata. 471. 

 Phylloxera, 570, 



Phylloxera, Reproduc- 

 tion of, 128. 



Phylogeny, 122. 



Physalia, 244, 249. 



Physematium, 194. 



Physometridge, 583. 



Physophora, 248, 249. 



Physophoridae, 244, 248. 



Physopoda, 559. 



Phytophaga, 594. 



Phytophthires, 568. 



Pieris, 585. 



Pigment of eye, 86, 88. 



Piiidium, 341. 



Pilzfliegen, 576. 



Pilzkafer, 588. 



Pilzmucken, 578. 



Pimpla, 595. 



Pinnotheres, 478. 



Pinnulge, 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. 



Platygastcr, larvjeof .549. 



Platyhelminthes, 309. 



Platypezidre, 576. 



Platyscelus, 456. 



Pleopods of Isopoda, 457. 



Pleuron, 483, 525. 



Pliny, system of, 132. 



Ploteres, 572. 



Plume-moths. 582. 



Plumularia, 237, 242. 



Plusiadte, 583. 



Pluteus, 281, 282, 292, 

 294, 296. 



Pneumatocyst, 244. 



Pneumatophore, 214. 



Pneumora, 555. 



Podocerus, 455. 



Podocoryne, 237, 241. 



Podophora, 296. 



Podophrya, 205. 



Podura, 554. 



Poikilothermic, 74. 



Poison glands, 532. 



Polar areas of Ctcno- j 

 phora, 264, 



Polar body, 104. 

 Polian vesicles, 272. 

 Polistes, 566, 597. 

 Pollicipes, 445. 

 Polyactinia, 225, 

 Polybostrichus, 372,379. 

 Polycelis, 311, 315. 

 Polychaeta, 374. 

 1'olycirrus, 378. 

 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. 

 Polyommatidae, 585. 

 Polyophthalmus, 372. 

 Polyparia, 227. 

 Polyphemus, 422. . 

 Polypoid, 211. 

 Polypomedusse, 233. 

 Polyp type, 210. 

 Polystomea, 317, 318,322 

 Polystornella, 187. 

 Polystomum, 323, 324. 

 Polythalamia, 186. 

 Polyxenus, 521. 

 Polyzonium, 515, 521. 

 Pompilus, 597. 

 Pontobdella, 400. 

 Pontonia, 477. 

 Porcellana, 460, 478. 

 Porcellio, 457, 460. 

 Porifera, 214. 

 Porpita, 250. 

 Portunus,. 478. 

 Postabdomen of Arthro- 



poda, 407. 



Postscutellum, 526, 591. 

 Pou de poissons, 438. 

 Prachtkafer, 589. 

 Prseabdomen of Arthro 



poda, 407. 

 Prrestomium of Chnsti- 



fera, 387. 

 Praniza, 459. 

 Prawns, 477. 

 Praying insect, 557. 

 Priapulus, 394. 

 Primitive streak, 115, 



