INDEX. 



687 



Neoroptera, 347. 353. 442. 

 Nidamentai capsules, 418. 565. 



glands, 564. 591. 632. 

 Koctua, 402. 

 Non-ganglionic chords, their function 



in Articulata, 249. 307. 

 Notommata, 46. 

 Nucleobranchiata, 574. 

 Nndibranchiata, 540. 573. 

 Nulligi-ada, 467. 

 Nullipora, 140. 



Obtected metamorphosis, 422. 424. 

 Octopod dibranchiates, 605. 

 Octopus, 611. 623. 629. 

 CEstrus Bovis, 425. 



Hominis, 425. 

 Onchophora, 119. 

 Onychoteuthis, 603. 612. 621. 

 Operculum, 146. 229. 279. 458. 529. 



543. 

 Ophiura, 190. 194. 197. 224. 

 Orbiculidse, 503. 

 Organic matter, 36. 



not self-subsistent, 37. 

 Organisation, defined, 1. 

 Organised beings, 2. 

 Orthidffl, 502. 

 Orthoceratite, 595. 

 Orthoptera, 347. 352. 442. 

 Ostrapoda, 343. 

 Ova of Acalephae, 181. 



Annnlata, 258. 



Arachnida, 459. 464. 



Bothriocephala, 73. 



Brachiopoda, 498. 



Bryozoa, 152. 



Cephalopoda, 633. 635. 



Cirripedia, 285. 



Crustacea, 336. 



Echinus, 208. 



Epizoa, 274. 



Gastropoda, 564, 565. 567. 



Insecta, 406. 419. 



Lamellibranchiata, 523. 



Polygastria, 32, 33. 



Polypi, 125. 135. 137. 



Eotifera, 52. 



T£enia}, 73. 



Tunicata, 476. 478. 

 Oviparous generation, its final purpose 

 in Infusoria, 42. 



Pagurus, nerves of, 308. 

 Faludina vivipara, 556. 

 Parthenogenesis, 15. 88. 133. 160. 

 Parthenogenetic animals, 13, 14. 78. 90. 



124. 128- 131. 136. 151. 178. 184. 



212. 253. 262. 324. 409. 480, 481. 



484. 

 Patella, 554. 



Pearl, 518. 



artificial mode of producing, 518. 

 Pectinibranchiata, 441. 574. 

 Pedicellariae, 193, 202. 

 Pedicellina, 152. 

 Pendularia, 118. 

 Penella, 271. 

 Peniculus, 267. 

 Pentacrinus, 192. 223. 

 Per-centage of Fossil shells in tertiary 



strata, 576. 

 Pholcns, 453. 454. 457. 

 Phragmocone, 598. 

 Phyllopoda, 343. 

 Physalia, 176. 

 Physiological distinction between plants 



and animals, 3. 5. 6. 

 Physograda, 176. 189. 

 Planaria, 85. 94. 



Plants, distinction from animals, 2 — 8. 

 Pleistocene, 576. 

 Pleurobranchus, 558. 

 Pluteus,215. 



Poison-glands, 347. 405. 4 6. 

 Polierschiefer, 37. 



Polygastria, 16. Conjugation of, 29. 

 Classification of, 55. Generation of, 

 26. Mouths of, 29. Nucleus, or testis 

 of, 27. Ovarium of, 33. Shells of, 

 19. Sleep, none in, 22. Stomachs 

 of, 23. Teeth of, 23, 42. Vascular 

 system of, 25. 

 Polypi, 119. 



classification of, 155. 

 Productidae, 502. 

 Psyche, 416. 



Pteropoda, 471. 525. 572. 

 Pnlmogrades, 162. 188. 

 Pulmonaria, 469. 

 Pulmonata, 541. 573. 

 Pulmotrachearia, 468. 

 Pupa, definition of, 422. 



kinds of, 422. 

 Pyrosoma, 482. 

 Pyrosomidae, 501. 



Quaternary compounds, 4. 7, 



Eadiaria, 16. 



Radiata, 14. 



Ranatra, 366. 



Reparative power, 123. 272. 252. 323. 



434. 467. 561. 

 Reproduction of parts, 73. 123. 212,252. 



302. 323. 434. 476. 561. 

 Respiratory organs in 



Acalephae, 164. 



Annulata, 239. 



Arachnida, 455. 



Brachiopoda, 498. 



Bryozoa, 150. 



Cephalopoda, 588. 626. 



