icardites, 422, 468. 
Lites 33, 55, *463, 
Cyprinide, *463. 
Cyprovula, *2335, 
Cyrena, *462. 
Cyrenella, 463. 
Cyrenoides, *463. 
Cyrtia, *372. 
Cyrtoceras, *194, 
Cyrtodaria, 493. 
Cyrtolites, *345. 
Cyrtulus, 218. 
Cytherea, 473. 
Dactylina, 504. 
Dactylus, 313. 
Daphnella, 229. 
Daudebardia, *290, 
Davidsonia, *382. 
Davila, *485. 
Decapoda, *166. 
Decollated shells, 36, 206. 
Defrancia, 229. 
Delphinoidea, 256. 
Delphinula, 266. 
Deilthyridea, 365. 
Delthyris, 371. 
Dendrodoris, 328. 
Dendronotus, 327, *3834, 
Dendrostrea, 408. 
Dentaliade, *282. 
Dentalium, 27, *282. 
Dentati, *198. 
Dentition, 208. 
Dentition formula, 401. 
Deridobranchus, *268. 
Dermi-branchiata, 339, 
Deshayesia, *236, 
Desmoulinsia, 221. 
Development, 41, 287. 
Diacria, 348. 
Diadora, 274. 
Dianchora, 414, 
Diaphana, 317. 
Dibaphus, *216. 
Dibranchiata, *156. 
Diceras, *439. 
Dicelosia, 380, 
Didacna, 454, 
Digitaria, 465. 
Dimya, 408. 
Dimyary, 402. 
Diodonta, 481. 
Dione, 474. 
Dicecious, 40, 
Diphyllidia, *325. 
Dipilidia, 438. 
Diploceras, 192. 
Diplodonta, 455, *458. 
Diplommatina, *309. 
Disci, *198, 
Discima, 357, *388, 
Discinide, *388, 
Discites, *189. 
Discites, 411. 
Discohelix, 253. 
Discosorus, *193, 
Seliebaaey 276, 
Dithyra, 393. 
INDEX. 
Ditremaria, 271. 
Dolabella, *321. _ 
Dolabra, 431. 
Dolabrifera, *321. 
Dolium, 36, *225, 
Dombeya, 301. 
Donacilla, 485. 
Donacina, 486. 
Donax, *485. 
Doride, *328. 
Doridium, *319., 
Doris, 14, 24, 327, *328, 
Dorsanum. 220. 
Dosidicus, *173. 
Dosinia, 474, 475. 
Doto, 334, 
Dredging, 140. 
Dressena, 37, *423, 
Drillia, *229. 
Eburna, *221. 
Ecculiomphalus, *345, 
Echinospira, 285. 
Edmondia, *498. 
Egeria, 485, 486. 
Eggs, 40. 
Eylisia, 248. 
Eidothea, 319. 
Elasmatina, 294. 
Electrina, 310. 
Eledone, 27, *165. 
Elenchus, 12, *265. 
Elysia, *339. 
Elysiade, *339. 
Emarginula, *275. 
Eimbla, 491, 
Embletonia, *336, 
Embryo, 44. 
Encephala, 3. 
Endemic species, 51. 
Endoceras, *192. 
Endosiphonites, 190. 
Enida, 265. 
Enoplo-chiton, 284 . 
Enoploteuthis, *171. 
Ensatella, 487. 
Ensis, 487. 
Enieletes, 380. 
Entodesma, *499, 
Enzina, 214. 
Eolis, 23, 40. 
Epidermis, 33, 400. 
Epiphragm, 288, 
Epithyris, 363. 
Erato, *234, 
Evodona, 490. 
Ervilia, *485. 
Erycina, 459, 473, 483, 484. 
Eryx, 484. ; 
Escutcheon, 400. 
Eubranchus, 335. 
Eucharis, *492, 
Eudesia, 365. 
Eulima, *240, 
Eulimella, *239. 
Eumenis, 334. 
Euomphalus, 36, *267, 346. 
Euphemus, 344. 
Euplocamus, 331, 
51 
Eurybia, *350. 
Eurydesma, *417. 
EHurydice, 338. 
Euthria, 214. 
Eutropia, 263. 
Exogyra, *408. 
Eyes, 16. 
Facelina, *335. 
Falciferi, *198. 
Families, 46. 
Farcimen, 309. 
Fasciolaria, *215. 
Fastigiella, *244. 
Faunus, 248. 
Favorinus, *337. 
Felania, 458. 
Fenestrella, 408. 
Ferussina, 308. 
Fibrous shells, 31. 
Ficula, 217. 
Filurus, *337. 
Fimbria, 333, 457. 
Fimbriati, *199. 
Fiona, *336. 
Firola, 9, 341, *342. 
Firolide, *342. 
Firoloides, *342, 
Fissvrostra, 365. 
Fissurella, 27, *272. 
Fissurellide, *272. 
Fissurellidxa, *273, 
Fistulana, 35, 501. 
Flabellina, *335. 
Food, 8, 9. 
Formation of shells, 34. 
Forms of shells, 36. 
Fossarus, 131, *253 
ragilia, 481. 
Fryeria, *525. 
Fucola, 339. 
Fulgur, *217. 
Funnel, 187. 
Fusulus, 293. 
Fusus, 29, 35, 37, *218. 
Fusus, 212. 
Gadinia, *281. 
Galapagos Islands, 112. 
Galapagos Isles shells, 80, 
Galatea, *486. 
Galeomma, *461, 
Galerus, 276. 
Galvina, *337,. 
Ganglia, 16. 
Gari, 482. 
Gasteropoda, 4, 
Gasteropoda, 
time, 128. 
Gastrana, *481, 
Gastrana, 476. 
Gastridium, 219. 
Gastrochena, *501. 
Gastrocheenidee, *500, 
Gastroceeli, *174. 
Gastroplaz, 323. 
Gastropteron, *319 
Gellina, 334 
Gena, *267. 
range m 
