INDEX. 
577 
Pleurotoma, 372. 
Pleurotomaria, 396. 
Pleurotomariidse, 396. 
Pleurotomidse, 372. 
Plocamophorus, 355. 
Ploima, 446. 
Plume-Motlis, 122. 
Plutonium , 206. 
Pneumoderma, 366. 
Pneumora, 182. 
Podoacerus, 278. 
Podura, 203. 
Pcecilotheria, 224. 
Polia, 458. 
Polybranchiata, 356. 
Polycarpinea, 270. 
Polycelis, 471. 
Polycera, 355. 
Polyceridse, 355. 
Polychseta, 433. 
Polylophus, 539. 
Polyommatus, 89. 
Polymorphina, 557. 
Polyparium, 504. 
Polyphloca, 100. 
Polypliylla, 142. 
Polyplacophora, 398. 
Polypomedusm, 481. 
Polysiphonia, 502. 
Polystomese, 464. 
Polystomella, 559. 
Polystomum, 466. 
Polytremaria, 396. 
Polyxenidse, 209. 
Polyxenus, 209, 212. 
Polyzonium, 211, 213. 
Pompilidse, 33. 
Pond-Snails, 350. 
Pontarachna, 243. 
Pontobdella, 444. 
Pontonia, 270. 
Pontoniidse, 270. 
Porcelain Butterflies, 86. 
Porcellana, 261. 
Porcellanaster, 296. 
Porcellio, 276. 
Porocidaris, 310. 
Porocrinus, 296, 304. 
Poromya, 418. 
Poromyidse, 418. 
Porthesia, 110. 
Portuguese Man-of-War, 482. 
Portunidse, 256. 
Portunus, 256. 
Potamides, 385. 
Potamobia, 264. 
Potamobiidse, 264. 
Potato-Beetle, 157. 
Poterium, 543. 
Pourtalesia, 309. 
Prasinidse, 407. 
Prawns, 269. 
Praying Insects, 183. 
Priapulidse, 445. 
Priapulus, 445. 
Prionus, 153. 
Procession-Moth, 106. 
Proctotrypidse, 22. 
Promachocrinus, 300. 
Prominents, 99. 
Proneomenia, 400. 
Prosobranchiata, 369. 
vol. vi.—37 
Prostellaria, 385. 
Prostomum, 470. 
Proteolepas, 282. 
Protobranchiata, 403. 
Protolimulus, 251. 
Protomyxa, 552. 
Prototracheata, 287. 
Protozoa, 550. 
Psammobia, 415. 
Psammobiidse, 415. 
Pselapliidae, 136. 
Pselaphognatha, 209. 
Pseudidiops, 226. 
Pseudolamellibranchiata, 407. 
Pseudomarginella, 374. 
Pseudoneuroptera, 167. 
Pseudophana, 195. 
Pseudoscorpiones, 237. 
Pseudoterritelarise, 227. 
Psocidse, 175. 
Psocus, 176. 
Psolus, 312. 
Psyche, 102. 
Psychidse, 102. 
Psychropotes, 313. 
Psylla, 196. 
Psyllidse, 195. 
Ptenoglossa, 391. 
Pteroceras, 385. 
Ptcrocyclus, 390. 
Pteroides, 513. 
Pteromalidae, 21. 
Pteromatus, 23. 
Pteronotus, 379. 
Pteropoda, 365. 
Pterophoridse, 122. 
Pterophorus, 122. 
Ptcrosoma, 394. 458. 
Pterothysanidae, 111. 
Pterotrachea, 394. 
Pterotracheidse, 394. 
Pterygotus, 251. 
Ptinid.se, 146. 
Ptinus, 146. 
Palex, 76. 
Pulicidse, 75. 
Pulmonata, 342. 
Puncturella, 397. 
Pupa, 347. 
Pupidse, 347. 
Pupina, 390. 
Pupipara, 74. 
Purpura, 379. 
Pusionella, 372. 
Puss-Moth, 99. 
Pycnogonum, 248. 
Pylotoma, 388. 
Pyralidse, 118. 
Pyrameis, 86. 
Pyramidellidse, 392. 
Pyrazus, 385. 
Pyrocystis, 564. 
Pyrophorus, 144. 
Pyrrhocoris, 189. 
Pythia, 349. 
Eadiolaria, 561. 
Radius, 384. 
Ragactis, 500. 
Ranatra, 192. 
Ranella, 381. 
Rangia, 413. 
Rapana, 380. 
Razor-Shells, 415. 
Recluzia, 392. 
Red Coral, 516. 
Redia, 468. 
Reduviidse, 191. 
Reduvius, 191, 244. 
Requienia, 415. 
Retepora, 420, 423. 
Retina, 119. 
Retitelarise, 230. 
Rhabditis, 451. 
Rhabdoccela, 469. 
Rhabdoliths, 557. 
Rhabdonema, 451. 
Rhachiglossa, 372. 
Rliagium, 154. 
Rhaphidia, 163. 
Rhax, 236. 
Rhinoceros-Beetle, 143. 
Rhipidius, 147. 
Rhipidoglossa, 394. 
Rhipidophoridse, 147. 
Rhipidophorus, 147. 
Rhizocephala, 282. 
Rhizochilus, 380. 
Rhizocrinus, 298. 
Rliizopoda, 552. 
Rhizosphsera, 562. 
Rhizostoma, 492. 
Rhizota, 447. 
Rhizotrogus, 142, 
Rhodites, 19. 
Rhodocera, 92. 
Rhopalocera, 83. 
Rhopalodina, 313. 
Rhopalura, 473. 
Rhyacophilidse, 162. 
Rhynchites, 150. 
Rhynchocinetes, 269. 
Rhynchonella, 428, 430. 
Rhynchonellidse, 428, 430. 
Rhynchophorus, 152. 
Rhynchota, 159, 187. 
Rieinulei, 241. 
Rimula, 397. 
Ringicula, 363. 
Rissoa, 387. 
Rissoidse, 387. 
River-Mussels, 411. 
Robber-Plies, 59. 
Rock-Lobsters, 263. 
Rceta, 413. 
Rotifera, 445. 
Round-Worms, 448. 
Rove-Beetles, 135. 
Rutilia, 71. 
Sabella, 438. 
Saccocoma, 301. 
Sacculina, 282. 
Sagartia, 503. 
Sagitta, 457. 
Sagra, 155. 
Saida, 191. 
Saldidse, 191. 
Saltigradse, 234. 
Sand-Flies, 58. 
Sand-Hopper, 277. 
Sand-Worm, 435. 
Saprinus, 139. 
Sarcophaga, 67. 
