390 



INDEX. 



Monomyaries, 281. 

 Moulting of 



Arachnida, 267. 



Cirripedia, 161. 



Crustacea, 167. 



Epizoa, 154. 



Insecta, 245. 

 Mussel, 284. 

 Myelencephala, 12. 

 My gale, 255. 

 Mytilus, 284. 



Nacre, 286. 



Nais, 144." 



Napula, 23. 



Navicula, 18. 



Nautilus Pompilius, 315. 



Needham, moving filaments, 358. 



Nematoidea, 62. 



Nematoneura, 15. 



Nervous system, 



Acaleph«, 106. 



Anellata, 141. 



Arachnida, 254. 



Brachiopoda, 278. 



Cephalopods, 320. 348, 351. 



Cirripedia, 157. 



Crustacea, 13. 164. 169. 172. 



Echinoderma, 14. 116. 124. 127. 



Entozoa, 56. 68. 



Epizoa, 152. 



Gasteropoda, 302, 306. 



Insecta, 199. 210. 



Lamellibranchiata, 284. 



Nautilus, 320. 



Pteropoda, 243. 



Tunicata, 271. 



Vertebrata, 12. 



Metamorphoses of, in insects, 209. 

 Nidamental capsules, 309. 



glands, 308, 327. 

 Non-g^.nglionic chords, their function in 



Articulata, 171. 

 Notoramata, 34. 

 Nucleated cells, 24, 25. 364. 



Obtected metamorphosis, 238. 

 Octopod dibranchiates, 340. 

 Oestrus Horainis, 238. 

 Oken, Prof, 198. 364. 

 Operculum, 60. 296. 

 Ophiura, 115. 

 Organic matter, 28. 

 Orthoceratite, 331. 

 Ova of Acalephse, 109. 



Anellata, 145. 



Arachnida, 264. 



Bothriocephala, 53. 



Cephalopoda, 360. 



Cirripedia, 159. 



Crustacea, 185. 

 Epizoa, 152. 

 Gasteropoda, 311. 

 Insecta, 331. 

 Lamellibranchiata, 289. 

 Polygastria, 26. 

 Polypi, 85, 87, 100. 

 Rotifera, 37. 

 Tunicata, 273. 

 Oviparous generation, its final purpose 

 in Infusoria, 31. 



Pagurus, nerves of, 170. 



Paludina vivipara, 299. 



Pearl, 287. 



Pedicellarics, 120. 



Penella, 151. 



Peniculus, 149. 



Pentacrinus, 114. 129. 



Per-centage of Fossil shells in tertiary 

 strata, 312. 



Phillips, Prof., 336. 



Phragmocone, 333. 



Physalia, 107. 



Planaria, 60. 



Poison-glands, 216. 229. 260. 



Polygastria, 16. Generation of, 22. 

 Mouths of, 20. Ovarium of, 26. Shells 

 of, 18. Sleep, none in, 20. Stomach 

 in, 20. Teeth of, 20. Testes of, 

 26. Vascular system, 22. 



Polierschiefer, 40. 



Polypi, 81. 



Portuguese man-of-war, 107. 



Pteropoda, 291. 



Pupa, definition of, 236. 



Radiaria, 111. 



Radiata, 14. 



Rathke, Dr., 187. 290. 



Reaumur, 167. 



Reparative power, 84. 143. 



Reproduction of parts, 143. 183. 207. 



287. 

 Respiratory organs in 



Acalephaj, 104. 



Anellata, 137. 



Arachnida, 259. 



Brachiopoda, 278. 



Cephalopoda, 325. 357. 



Cirripedia, 158. 



Crustacea, 181. 



Echinoderma, 122. 



Gasteropoda, 294. 301. 



Insecta, 223. 



Lamellibranchiata, 283. 



Tunicata, 272. 

 Rhizostoma, 103. 

 Rotifer, 36. 

 Rotifera, 33. Alimentary canal in, 



