594 



INDEX. 



Nematorhyncha, 569, 575. 

 Neinatoscolices, 575, 580. 

 Nemertidae, 1G5, 166. 

 Neomenia. 571. 

 Nephelis, 192. 

 Nerve, '27, 29. 

 Nervous system, 61. 

 Neuroptera, 366, 375. 377. 

 Noctiluca, 46, 90-92. 

 Notodelphys, 241, 242. 

 Notomrnata tardigrada. 170. 

 Nova Scotian coal fossils, 342. 

 Nucleus, 17. 48, 74. 

 Nucula, 408, 416. 

 Nudibranchiata, 424, 437, 438. 

 Nullipore, 150, 151. 

 Nummulites, 79. 

 Nyctotkerus, £7, 98. 



O 



OCTOCORALLA, 143, 146. 



Octopoda, 452, 460. 



Odontophora, 404, 417, 419, 573. 



Oligocbieta, 66, 189, 193, 198, 199, 213, 574. 



Onchidum, 60. 



Oniscidae, 316. 



Oniscus, 219, 313. 



Ophiodes, 119. 



Ophiolepis ciliata. 484. 



Ophiuridea, 466, 482. 



Ophrydidae, 100. 



Opistbobranchiata, 437, 438. 



Opistbomum, 159. 



Orbulina. 79. 



Orders, 23. 



" Organized," meaning of, 15. 



Organs, 28. 64, 65. 



Orisrin of living matter, 41. 



" Origin of Species," 37. 



Orthida?, 403, 404. 



Orthoptera, 364, 306, 375, 377, 381, 383. 



Ossicula auditus, 65. 



Ostracoda, 221, 251. 



Ostraea, 408-417. 



Oviparous animals. 67. 



Ovoviviparous animals. 67. 



Oxidation, waste of living matter by, 10. 



Oxvuris. 547. 



Oyster, 408. 



Pagcrid^;, 299. 



Palaeocyclus, 153. 



Palaeontology. See Fossils. 



Palinurus vulgaris, 293. 



Paludina, ISO, 181, 425, 426. 



Pangenesis. 41. 



Paramcecium, 48. 96-100. 



Parasites. 45, 67, 171, 181-183, 187, 237, 241, 



242. 253. 262, 263. 314, 331, 334, 363, 387, 



416.440. 550.553. 

 Pasteur's experiments, 12, 13. 

 Patellidae. 438, 444. 

 Pecten. 408-416. 

 Pectnstraoa. 253. 

 Pedalion. 170. 171. 

 Pedicellina. 571, 582. 

 Pedicels. 54. 



Pediculina,_362, 368. 

 Pelagia, 132, 133. 

 Peltogaster paguri, 262. 

 Peneus. 300-302. 

 Penicillium, 45. 

 Pennatnlidse, 145. 

 Pentacrinus. 500. 

 Pentastomida, 225, 234, 573. 

 Pentastomum taenioides, 335. 

 Pentremites, 509. 

 Perennibrancbiata. 58. 

 Perforata, 79, 146-150, 153. 

 Peridineae, 76, 93. 

 Peripatidea, 225, 534, 573. 

 Peritricha, 95, 96, 100. 

 Perla nigra, 364. 

 Peroniadae. 440. 

 Peronia verruculata, 443. 

 Peronospora, 45, 46. 

 Phalangidae, 326. 

 Phallusia, 515, 520. 

 Pharyngopneusta, 577. 

 Pbaryngopneustal series, 581. 

 Pholas, 406, 408, 417. 

 Phoronis, 217, 218. 

 Phrosina, 315. 

 Pbrynidae, 326. 

 Phvlactolaemata, 572. 

 Pbyllodoce, 214. 

 viridis. 211. 



Pbyllopoda. 242. 



Phyllosomata, 307, 308. 



Phylogenv. 42. 



Physalia,115, 12^,130. 



Pbysemaria, 552. 574, 575, 585. 



Physiology. 9, 16, 26. 



Physophoridae, 117. 128-132. 



Pilidium gyrans 165, 166. 



Pisidium, 414. 415. 



Placenta. 67, 101. 



Piagiostome fisbes. 67. 



Planaria, 161, 192, 575. 



dioica. 161. 



Plants. 31-33. 44, 68. 



Pleurobrancbia, 155. 



Pleurodictvon. 153. 



Plumatella repens, 390, 391. 



Plumularidae, 118. 



Pocillopora, 148. 



Podophrva fixa, 94. 



Podophthalmia, 230, 264. 



Poduridae, 382. 



Po?cilopoda, 228. 



Polian vesicles, 468, 483. 



Polvarthra, 171. 



Polycelis, 192. 



— - laevigata, 161. 



Polvcbaeta. 66. 189, 199, 200, 207, 574, 575. 



Polycistina, 83. 



Polvgordius. 575. 



Polykricos, 96. 



Polvmvaria, 549. 



Polvnoe. 200. 



Iunulata, 210. 



squamata. 200-207. 212. 



Polyopbthalmus. 200, 212. 



Polvpes, 31. 62, 110. 



Pofvpide. 390. 



Polvpite. 110. 



Polvplacophora, 430, 433, 578. 



