514 



IKDEX. 



Monoceros, *223, 

 Monocondylsea, "43-1. 

 Monodacna, 454. 

 Monodonta, *265. 

 Monoecious, 40. 

 Monomyary, 402. 

 It'Ionopleura, *438. 

 Mono-pleuro-ltranchiata, 



312. 

 Monoptigma, *240. 

 Monojjtiyma, 239. 

 Monoptygma, 313, 

 Monotis,*417. 

 MonstrosiLies, 37. 

 Montacuta*460. 

 3Io7itagua, 335. 

 Mopalia, 284. ■ 

 Morio, 225. 

 Morrisia, *367. 

 MoTum, 225. 

 Mouretia, 281. 

 Ilulinia, 477. 

 Mulleria, 432, -435. 

 Multispiral operc, 203, 

 Miinsteria, 182. 

 Mm-chisonia, *270. 

 Mm-ex, 23, 35, 36, *213. 

 Muricidse, *212. 

 Muscular system, IS, 355, 



401. 

 Musculium, 461. 

 Mutela, 435. 

 Mya, *489. 

 Myacidffi, *4S9. 

 Myacites, *-J97. 

 Myadora, *-I99. 

 Myalina, *42L 

 Myatella, 498. 

 Mj'cetopus, *435. 

 Mycetopus, 435. 

 Myocliania, *-i99. 

 Mj'ocoucha, *471. 

 Myonia, *2-il. 

 Myoparo, 427. 

 Mj^oplioria, *431. 

 Myopsis,-^'dl. 

 Myrina, *423. 

 Myristica, *217. 

 My&ia, 475. 

 Myllita, 459. 

 MytUicardia, 471. 

 Mytilidse, *^420. 

 Mj'tilimeria, *422. 

 Mytilomya, 423. 

 Mytilus, 30, 31, 43, *420. 

 Jylyxostomn, 308. 



Nacca, 235. 



Nacella, *280. 

 Nacreous shells, 29. 

 Mmina, 290. 

 Narunio, 476. 

 Narica, *237. 

 ]Srassa,*221. 

 ^^atica, 38, *235. 

 Naticella, 23(5. 

 Naticidce, *235.- 

 Naticina, *23a. 

 Naticopsis, *235. 



Natural ba,rriers, 53. 



Naiural history provinces, 

 50—54. 



Nautilidte, *185. 



Nautiloceras, 194. 



Nautilus, 161. 



Nautilus, 55, 185. 



Navicella, *282. 



Neaera, *491. 



Neda, *323. 



Neiio, 429. 



Neithea, *412. 



Nematura, ^2o&. 



Nerinaja, *244, 314. 



Nerinella, *24:4. 



Nerita, 38, 55, *260. 



Neritidce, 36, *260. 



Neritina, 37, *261. 



Neritoma, *261. 



Neritopsis, *261. 



Nervous system, 15. 



Nets, 139. 

 .^Neverita, 236. 

 'New Zealand sheUs, 104. 



Nidamental ribbon, 40. 



Niplionia, 267. 



Niso, *240. 



Noetia, 427. 



Nomenclature, 48. 



Northia 221. 



Notarchus, *321. 



Notlioceras, *195. 



Notocceli, *174. 



Notomya, 469. 



Novaculina, *4S9. 



Nucinclla, 427. 



Nucleobranchiata, 340, 



Nucleus, 205. 

 ' Nucula, *426. 



Nucu!a, *497. 



Nuculina, *427. 



Niicunella, 427. 



Nudibranchiata, *£25. 



Ubeliscus, 238. 

 Obelus, *392. 

 Octopoda, *158. 

 Octopodoteuthis, 171. 

 Octopus, 66, *163. 

 Ocjjtlioc, 161, 

 Odoncinetus, 495. 

 Odontldium, 249. 

 Odontostomus, *291. 

 Odostomia, *239. 

 Oleacina, 292. 

 Oligyra, 310. 

 Oliva, 32, 55, *227. 

 Olivancillaria, 227. 

 Olivella, *227. 

 Olivia, 265. 

 Omala, 480. 

 Omalaxis, 253. 

 Omalia, 475. 

 Omalonj'x, -291. 

 Ommastrephes, *172. 

 Oinphulotropis, 307. 

 Oncidiadai, *299. 

 Oncidium, *299. 

 Oncidoris, *329. 



Oncoceras, *193. 

 Ouiscia, *225. 

 Onustus. 254. 

 Onychia, 171. 

 Onychochi'on, 284. 

 Oi ychoteu his, *171. 

 Operculata, *305. 

 Operculum, 38, 182, 237. 

 Ophileia, 267. 

 Opis, *470. 



Opistho-branchia, *311. 

 Opisthophorus, *309. 

 Orbiceha, 389. 

 Orbicula, 358, 386, 383. 

 Orbiculoidea, 388. 

 Orbis, '^253. 

 Orbidites, 187. 

 Oregon, sliells of, 109. 

 Ormoceras, *191. 

 Ornati, *198. 

 Ortkmnhonites, 380. 

 OrtliidEe, *379. 

 Urthis, *380. 

 Orthisina, *380. 

 Orthoceras, 38, *i90. 

 Orthoceratidfe, *190. 

 Ortlwna, 336. 

 Orthonotus, *423. 

 Orthotlirix, 385. 

 Oicanius, 322. 

 Osteodesma, 495. 

 Ostrea, 31, *407. 

 Ostreidaj, M07. 

 Otina, *238, 

 Otolithes, 17. 

 Otopoma, *307. 

 Oviducts, 359. 

 Oviparous repr., 40. 

 Ovulum, 27, *234. 

 Ovum, 41. 

 Oicenia, 169. 

 Oxygyrus, *344. 

 Oyster shell, 31. 



Pachydomus, *469. 

 Pachylahra, 258. 

 Pachymya, 492. 

 Puchyodon, 434, 470. 

 Pachyotis, 291. 

 PaclijTisma, *470. 

 Pachytes, 414. 

 Puchytoma, 310. 

 Pacyodon, 490. 

 Padollus, 268, 

 Pagodella, 252. 

 PalcEoteuthis, 177, 182. 

 PaUial impression, 20. 

 PaUial line, 404. 

 PaUial sinus, 404. 

 PaUio-branchiata, 354. 

 PaUium, *412. 

 Paludestrina, 254. 

 Paludina,27,37, *257,286. 

 Pidudinella, 256. 

 Paludinidse, *257. 

 Paludomus, *247. 

 Panama shells, 81. 

 Panamic province, 79. 

 Pancreas, 23. 



