594 



INDEX. 



Nematorhyncha, 569, 5T5. 

 Nematoscolices, 575, 580. 

 Nemcrtidae, 165, 166. 

 Neomenia, 571. 

 Nephelis, 192. 

 Nerve, '27, 29. 

 Nervous system, 61. 

 Neuroptera, 860, 375, 377. 

 Noctiiuca, 46, 90-92. 

 Notodelphys, 241, 242. 

 Notominata tardigrada, 170. 

 Nova Scotian coal fossils, 842. 

 Nucleus, 17, 48, 74. 

 Nucula, 408, 416. 

 Nudibranchiata, 424, 437, 488. 

 Nullipore, 150, 151. 

 Nummulites, 79. 

 Nyctotherus, 7, 98. 



O 



OCTOCOEALLA, 148, 146. 



Octopoda, 452, 460. 



Odontophora, 404, 417, 419, 573. 



Oligochaeta, 66, 189, 193, 198, 199, 218, 574. 



Onchidum, 60. 



Oniscidse, 316. 



Oniscus, 219, 313. 



Ophiodes, 119. 



Ophiolepis ciliata, 484. 



Ophiuridea, 466, 482. 



Opbrydidae, 100. 



Opisthobranchiata, 437, 438. 



Opistbomum, 159. 



Orbulina, 79. 



Orders, 23. 



" Organized," meaning of, 15. 



Organs, 28, 64, 65. 



Origin of living matter, 41. 



"Origin of Species," 37. 



Orthidae, 403, 404. 



Orthoptera, 364, 366, 375, 377, 381, 883. 



Ossicula auditus, 65. 



Ostracoda, 221, 251. 



Ostrsea, 408-417. 



Oviparous animals, 67. 



Ovoviviparous animals, 67. 



Oxidation, waste of living matter by, 10. 



Oxyuris, 547. 



Oyster, 408. 



Palaeocyclus, 153. 



Palaeontology. See Fossils. 



Palinurus vulgaris, 293. 



Paludina, 180, 181, 425, 426. 



Pangenesis, 41 . 



Paramoecium, 48, 96-100. 



Parasites, 45, 67, 171, 181-188, 187, 237, 241, 



242, 253. 262, 263, 314, 331, 334, 868, 387, 



416, 440, 550, 553. 

 Pasteur's experiments, 12, 18. 

 Patellidac. 438, 444. 

 Pecten. 408-41 6. 

 Pectostraca, 253. 

 Pedalion, 170, 171. 

 Pedicellina. 571, 582. 

 Pedicels, 54. 



Pediculina, 862, 868. 

 Pelagia, 182, 138. 

 Peltogaster paguri, 262. 

 Peneus, 300-302. 

 Penicillium, 45. 

 Pennatulidae, 145. 

 Pentacrinus, 500. 

 Pentastomida, 225, 234, 578. 

 Pentastonmm taenloides, 385. 

 Pentremites, 509. 

 Perennibranchiata. 58. 

 Perforata, 79, 146-150, 158. 

 Peridineae, 76, 98. 

 Peripatidea, 225, 534, 578. 

 Peritricha, 95, 96, 100. 

 Perla nigra, 3C4. 

 Peroniadae, 440. 

 Peronia verruculata, 443. 

 Peronospora, 45, 46. 

 Phalangidae, 326. 

 Phallusia. 515, 520. 

 Pbaryngopneusta, 577. 

 Pbaryngopneustal series, 581. 

 Pbolas, 406. 408, 417. 

 Phoronis, 217, 218. 

 Phrosina, 315. 

 Phrynidas, 326. 

 Phylactolaemata, 572. 

 Phyllodoce, 214. 

 viridis, 211. 

 Phyllopoda, 242. 

 Phyllosomata, 307, 308. 

 Phytogeny. 42. 

 Physalia, 115. 12?, 130. 

 Physemaria, 552, 574, 575, 585. 

 Physiology. 9, 16, 26. 

 Physophoridae, 117. 128-182. 

 Pilidium gyrans 165, 166. 

 Pisidium, 414. 415. 

 Placenta. 67, 101. 

 Piagiostome fishes. 67. 

 Planaria, 161, 192. 575. 



dioica, 161. 



Plants, 31-83. 44, 68. 

 Pleurobranchia, 155. 

 Pleurodictyon. 153. 

 Plumatella" repens, 390, 391. 

 Plumularidae, 118. 

 Pocillopora, 148. 

 Podophrya fixa, 94. 

 Podophthalmia, 230, 264. 

 Poduridaa, 382. 

 Poecilopoda, 228. 

 Polian vesicles, 468, 483. 

 Polyarthra, 171. 

 Polycelis, 192. 



hevigata, 161. 



Polycha?ta. 66, 189, 199, 200, 207, 574, 575. 



Polycistina, 83. 



Polygordius. 575. 



Polykricos, 96. 



Polymyaria, 549. 



Polynoe, 200. 



lunulata, 210. 



squamata, 200-207, 212. 



Polyophthalmus, 200, 212. 

 Polvpes, 31, 62, 110. 

 Polypide, 390. 

 Polypi te, 110. 

 Polyplacophora, 430, 488, 578. 



