594 



INDEX. 



Nematorhyncha, 509, 575. 

 I^euiatoscolices, 575, 5b0. 

 Nemcrtidae, 105, 100. 

 Neomenia, 571. 

 Jfephelis, 192. 

 Nerve, 27, 29. 

 Nervous system, 61, 

 Neuroptera, 300, 876, 377. 

 Noctiluca, 40, 90-92. 

 Notodelphys, 241, 242. 

 Notommata tardigrada, 170. 

 Nova Scotian coal fossils, 842. 

 Nucleus, 17. 48, 74. 

 Nucula, 408, 416. 

 Nndibranchiata, 424, 437, 438. 

 Nullipore, 15l), 151. 

 Nunimulites, 79. 

 Nyctotherus, 97, 98. 



OCTOCORALLA, 143, 146. 



Octopoda, 452, 460. 



Odontophora, 404, 417, 419, 573. 



Olipochasta, 60, 189, 198, 198, 199, 213, 574. 



Onchidura, 60. 



Oniscidie, 816. 



Oniscus, 219, 313. 



Ophiodes, 119. 



Ophiolepis ciliata. 4S4. 



Ophiuridea, 406, 482. 



Ophrydidae, 100. 



Opistliobranchiata, 437, 438. 



Opisthomum, 159. 



Orbulina, 79. 



Orders, 23. 



" Organized," meaning of, 15. 



Organs, 28, 64, 65. 



Origin of living matter, 41. 



" Origin of Species," 37. 



Orthidse, 403, 404. 



Orthoptera, 864, 306, 875, 377, 381, 383. 



Ossicnla 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. 



Pagttrid^, 299. 



Palseocyclus, 153. 



Palaeontology. See Fossils. 



Pallnurus vulgaris, 293. 



Paludina, 180, 181, 425, 426. 



Pangenesis, 41 . 



Paramoecium, 48, 96-100. 



Parasites, 45, 67, 171, 181-1 F3, 187, 237, 241, 



242, 253, 262, 263, 314, 331, 334, 863, 387, 



416,440,650,553. 

 Pasteur's experiments, 12, 13. 

 Patellidae. 438, 444. 

 Pecten, 408-416. 

 Pectostraca, 253. 

 Pedalion, 170, 171. 

 Pedicellina, 571, 582. 

 Pedicels, 64. 



Pediculina, 362, 8C8. 

 Pelagia, 132, 138. 

 Peltogaster paguri, 262. 

 Peneus, 80U-8U2. 

 Peniciliium, 45. 

 Pennatulidae, 145. 

 Pentacriuus. 600. 

 Pentastomida, 226, 284, 573. 

 Pentastonmm taenioides, 385. 

 Pentremites, 509. 

 Perennibranchiata. 58. 

 Perforata, 79, 146-150, 158. 

 Peridineae, 70, 93. 

 Peripatidea, 226, 534, 573. 

 Peritricha, 96, 96, 100. 

 Perla nigra, 304. 

 Peroniadae, 440. 

 Peronia verruculata, 443. 

 Peronospora, 46, 46. 

 Phalangidse, 326. 

 Phallusia, 616, 620. 

 Pharyngopneusta, 577. 

 Pbaryngopneustal series, 581. 

 Pholas, 406, 408, 417. 

 Phoronis, 217, 218. 

 Phrosina, 815. 

 Phrynidae, 826. 

 Phylactolaemata, 572. 

 Phyllodoce, 214. 



viridis, 211. 



Phyllopoda, 242. 

 Phyllosomata, 307, 303. 

 Phylogeny, 42. 

 Physalia, 115, 12^ 130. 

 Physemaria, 552, 574, 575, 585. 

 Physiology, 9, 16, 26. 

 Physophoridae, 117. 128-132. 

 Pilidium gyrans, 165, 166. 

 Pisidium, 414. 416. 

 Placenta, 67, 101. 

 Piagiostome fishes. 67. 

 Planaria, 161, 192, 575. 



dioica. 161. 



Plants, 31-88, 44, 68. 

 Pleurobranchia, 155. 

 Pleurodictyon, 153. 

 Plumatella repens, 300, 391. 

 Plumularidae, 118. 

 Pocillopora, 148. 

 Podophrya fixa, 94. 

 Podophthalmia, 230, 264. 

 Poduridae, 882. 

 Poecilopoda, 228. 

 Pohan vesicles, 468, 483. 

 Polvarthra, 171. 

 Polycelis, 192. 



laevigata, 161. 



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



Polycistina, 83. 



Polygordius. 575. 



Polykricos, 96. 



Polymyaria, 549. 



Polynue, 200. 



lunulata, 210. 



squamata, 200-207, 212. 



Polyophthalmus, 200, 212. 

 Polypes, 31, 62, 110. 

 Polypide, 890. 

 PolVpite, 110. 

 Polyplacophora, 430, 433, 573. 



