IKDEX. 



687 



Neuroptera, 347. 353. 442. 

 Niclamental capsules, 418. 565. 



glands, 564. 591. 632. 

 Noctua, 402. 

 Non-ganglionic chords, their function 



in Articulata, 249. 307, 

 Notommata, 46. 

 Nucleobranchiata, 574. 

 Nudibranchiata, 540. 573. 

 Nulligrada, 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. 

 Orbiculidffi, 503. 

 Organic matter, 36. 



not self-subsistcnt, 37. 

 Organisation, defined, 1. 

 Orajanised beings, 2. 

 Orthidse, 502. 

 Orthoceratite, 595. 

 Orthoptera, 347. 352. 442. 

 Ostrapoda, 343. 

 Ova of Acalephse, 181. 



Annulata, 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. 



Taenia, 73. 



Tunicata, 476. 478. 

 Oviparous generation, its final purpose 

 in Infusoria, 42. 



Pagurus, nerves of, 308. 

 Paludina 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. 



Pedicellaria;, 193. 202. 



Pedicellina, 152. 



Pendularia, 118. 



Penella, 271. 



Peniculus, 267. 



Pentacriuus, 192. 223. 



Per-centage of Fossil shells in tertiaiy 

 strata, 576. 



Pholcus, 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. 585. 572. 



Pulmogrades, 162. 188. 



Pulmonaria, 469. 



Pulmonata, 541. 573. 



Pulmotrachearia, 468, 



Pupa, definition of, 422. 

 kinds of, 422. 



Pyrosoma, 482. 



Pyrosomida3, 501. 



Quaternary compounds, 4. 7. 



Kadiaria, 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. 



