594 



INDEX. 



Nematorhyncha, 569, 575. 

 Neinatoscolices, 575, 580. 

 Nemertidae, 105, 166. 

 Neomenia, 571. 

 Nephelis, 192. 

 Nerve, 27, 29. 

 Nervous system, 61. 

 Neuroptera, 366, 375, 377. 

 Noctiluca, 46, 90-92. 

 Notodelphys, 241, 242. 

 Notommata tardigrada, 170. 

 Nova Scotian coal fossils, 342. 

 Nucleus, 17, 48, 74. 

 Nucula, 408, 416. 

 Nudibranchiata, 424, 437, 438. 

 Nullipore^l5(), 151. 

 Nummulites, 79. 

 Nyctotherus, S7, 98. 



OCTOCORALLA, 143, 146. 



Octopoda, 452, 460. 



Odontophora, 404, 417, 419, 573. 



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



Onchidum, 60. 



Oniscidaj, 316. 



Oniscus, 219, 313. 



0{>hiodes, 119. 



Ophiolepis ciliata. 484. 



Ophiuridea, 466, 482. 



Opkrydidae, 100. 



Opisthobranchiata, 437, 438. 



Opisthomuui, 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, 383. 



Ossicula auditus. 65. 



Ostracoda, 221, 251. 



Ostraea, 408-417. 



Oviparous animals, 67. 



Ovoviviparous animals, 67. 



Oxidation, waste of living matter by, 10. 



Oxyuris, 547. ' 



Oyster, 408. 



PAGTTRrD^;, 299. 



Palseocyclus, 153. 



Palaeontology. See Fossils. 



Palinurus vulgaris, 293. 



Paludina, 180, 181, 425, 426. 



Pangenesis, 41. 



Paramoecium. 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. 

 Pectostraca, 253. 

 Pedalion, 170, 171. 

 Pedicellina. 571, 582. 

 Pedicels, 54. 



Pediculina, 362, 368. 

 Pelagia, 132, 133. 

 Peltogaster paguri, 262. 

 Peneus, 300-302. 

 Penicillium, 45. 

 Pennatnlidae, 145. 

 Pentacrinus. 500. 

 Pentastomida, 225, 234, 573. 

 Pentastonmm taenioides, 385. 

 Pentremites, 509. 

 Perennibranchiata. 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. 

 Phrynidae, 326. 

 Pbylactolaemata, 572. 

 Phyllodoce, 214. 



viridis, 211. 



Phyllopoda, 242. 

 Phyllosomata, 307, 308. 

 Pbylogeny, 42. 

 Pbysalia, 115, 12?, 130. 

 Physemaria, 552, 574, 575, 5S5. 

 Physiologv, 9, 16, 26. 

 Pbysophorida?, 117. 128-132. 

 Pihdium gyrans, 165, 166. 

 Pisidium, 414, 415. 

 Placenta. 67, 101. 

 Piagiostome fishes. 67. 

 Planaria, 161, 192, 575. 



dioica. 161. 



Plants. 31-33, 44, 68. 

 Pleurobrancbia, 155. 

 Pleurodictyon, 153. 

 Plumatella repens, 390, 391. 

 Plumularidae, 118. 

 Pocillopora, 148. 

 Podophrya fixa, 94. 

 Podophthalmia, 230, 264. 

 Poduridae, 382. 

 Pcecilopoda, 228. 

 Polian vesicles. 468, 483. 

 Polyarthra, 171. 

 Polycelis, 192. 



laevigata, 161. 



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



Polycistina, 83. 



Polygordius. 575. 



Polykricos, 96. 



Polymyaria, 549. 



Polynoe, 200. 



hinulata, 210. 



squamata, 200-207, 212. 



Polyophthalmus, 200, 212. 

 Polvpes, 31, 62, 110. 

 Polypide, 390. 

 Polypite, 110. 

 Polyplacophora, 430, 433, 573. 



