576 
Oligochxta, 439. 
Oliva, 373. 
Olive-Fly, 71. 
Olivella, 373. 
Oliyes, 373. 
Olividm, 373. 
Ommatostrephes, 334. 
Omphalotropis, 390. 
Oncidiidee, 349. 
Oniscoidea, 275. 
Oniscus, 276. 
Onychoteuthidx, 337. 
Onychoteuthis, 337. 
Oonopidx, 228. 
Ophiadis, 315. 
Ophiothrix, 307. 
Ophiuroidea, 306. 
Opiliones, 238. 
Opisthobranchiata, 352. 
Opisthoporus, 390. 
Opisthophthalmus, 216. 
Opisthothelx, 224. 
Orbitelarix, 230. 
Orbitolites, 556. 
Organ-Pipe Coral, 517. 
Orgygia, 107. 
Oribatidx, 245. 
Ormers, 396. 
Ornithodoninx, 225. 
Ornithomyia, 75. 
Ornithoptera, 91. 
Ortalis, 72. 
Orthesia, 199. 
Orthoceras, 339. 
Orthoceratidx, 339. 
Orthonedidx, 473. 
Orthoptera, 159, 166. 
Orthorrhapha, 50. 
Osmia, 42. 
Ostracoda, 282. 
Ostrea, 408. 
Ostreidx, 408. 
Otopoma, 389. 
Ovnla, 383. 
Owl-Moths, 111. 
Oxopxi, 218. 
Oxybelus, 36. 
Oxygyrus, 394. 
Oxynoidx, 364. 
Oxyrhyncha, 259. 
Oxystomata, 259. 
Oxyuris, 453. 
Oysters, 408. 
Pachymerus, 16. 
Pachytylus, 181. 
Painted Lady, 86. 
Palxoblattina, 166. 
Paliemon, 269. 
Palxmonidx, 269. 
Palxophonus, 215. 
Palinuridx, 263. 
Palinurus, 263. 
Palolo, 434. 
Palpatores, 240. 
Palpicornes, 140. 
Palpigradi, 220. 
Paludicella, 422, 424, 
Palystes, 232. 
Palythoa, 503. 
Pamphila, 92. 
Pandalidx, 270. 
INDEX. 
Pandalus, 270. 
Pandom, 417. 
Pandoridx, 417. 
Panorpa, 163. 
Panorpidx, 162. 
Pantopoda, 248. 
Papilio, 91. 
Papilionidx, 91. 
Paramenia', 400. 
Paranebalia, 280. 
Pararge, 88. 
Parasita, 360. 
Parastacidx, 268. 
Parthenopea, 282. 
Parthenopidx, 260. 
Passalidx, 141. 
Patella, 397. 
Patellidx, 397. 
Pauropoda, 213. 
Paussidx, 136. 
Paussus, 136. 
Peacock-Butterfly, 85. 
Pea-Moth, 120. 
Pearl-Mussel, 412. 
Pearl-Oysters, 407. 
Peden, 409. 
Pedinibranchiata, 370. 
Pedinicornia, 140. 
Pedinidx, 409, 485. 
Pedis, 485. 
Pedunculus, 405. 
Pedalium, 447. 
Pedictolaria, 384. 
Pediculina, 201. 
Pedipalpi, 217. 
Pelagothuria, 313. 
Pelecypoda, 401. 
Pelican’s Foot, 385. 
Pellibranchiata, 359. 
Pelomyxa, 552. 
Peltogaster, 282. 
Pcnxidea, 270. 
Penxus, 270. 
Peneroplis, 556. 
Pennatula, 513. 
Pennatulidx, 511. 
Pennella, 283. 
Pentacrinus, 298. 
Pentamera, 129. 
Pentastomida, 247. 
Pentastomum, 247. 
Pentatoma, 188. 
Pentatomatidx, 188. 
Pcntremites, 303. 
Pepper-Moth, 114. 
Peraelis, 367. 
Perforata, 554. 
Peripatidx, 287. 
Peripatoides, 288. 
Peripatopsis, 288. 
Peripatus, 288. 
Periphragella, 539. 
Periphylia, 494. 
Periplaneta, 185. 
Periwinkles, 386. 
Perla, 172. 
Perlidx, 171. 
Petalocrinus, 301. 
Petiolata, 17. 
Plialangiidx, 241. 
Phalangium, 240. 
Phalera, 99. 
Phascolosoma, 444. 
Phasiandla, 395. 
Phasmatidx, 182. 
Pheronema, 539. 
Philanthidx, 36. 
Philanthus, 36. 
Philine, 363. 
Philinidx, 363. 
Philodromus, 344. 
Phlxobium, 135. 
Plioladacea, 416. 
Pholadidx, 416. 
Pholadomya, 418. 
Pholas, 416. 
Pholcidx, 230. 
Pliolcus, 230. 
Phos, 377. 
Phrcatoicidea, 276. 
Phreatoicus, 276. 
Phreorydes, 440. 
Phronirna, 279. 
Phryganeidx, 161. 
Phylaclolxmata, 421. 
Phyllidia, 355. 
Phyllirhoe, 358. 
Phyllium, 183. 
Phyllodoce, 434. 
Phyllodromia, 185. 
Phyllopoda, 285. 
Phyllotreta, 157. 
Phylloxera, 197. 
Phymosoma, 444. 
Physa, 351. 
Physalia, 482. 
Physidx, 350. 
Physophora, 481. 
Physophoridx, 483. 
Physopsis, 351. 
Phytocoridx, 190. 
Phytocoris, 190. 
Phytophaga, 155. 
Phytoptidx, 246. 
Phytoptus, 246. 
Pilidium, 458. 
Pilocystis, 297. 
Pimpla, 25. 
Pimplariinx, 24. 
Pine-Moth, 112. 
Pinnodopus, 331. 
Pinnotheridx, 259. 
Piophila, 72. 
Pirula, 383. 
Pisania, 377. 
Pisaura, 234. 
Pisaaridx, 234. 
Pisidium, 414. 
Placuna, 404. 
Plagiostoma, 41Q. 
Plagitelarix, 230. 
Planarians, 471. 
Planes, 259. 
Planipennia, 162. 
Planorbis, 350. 
Plant-Bugs, 190. 
Plant-Lice, 196. 
Platycrinus, 299. 
Platyhelminthes, 459. 
Platyparea , 71. 
Platyrrhadius, 212. 
Pleurobranchidx, 364. 
Plenrobranchus, 364. 
Plcurophyllida, 355. 
