INDEX. 



The synonjins are piinted in italics, and the pages where the genera are described are 

 indicated by an asterisk {*). 



Abbreviations, 49. 

 Abra, 483. 

 Abralia, 171. 

 Acantlivia, 223. 

 Acantliochites, *2S4. 

 Acanthodoris, *332. 

 Acanthopleui'a, *283. 

 Acanthoteuthis, *175. 

 Accmthothyris, 375. 

 dcardo, 323, 454. 

 Acavus, *2S9. 

 AcephaJa, 5. 

 Acera, *316. -319. 

 Achatina, *292. 

 Achatinella, *292. 

 Acicula, *310. 

 Aeicnlidee, *oI0. 

 Aclesia, *321. 

 Aclis, *240. 

 Acmsea, *2S1. 

 .Acmaea, 311. 

 Acme, 311. 

 Acoeli, *174. 

 .Acostixa, 435. 

 .Acrociilia, 277. 

 Acroloxus, 302. 

 ^crotreta, *390. 

 ActcEon, 313, 339. 

 Acteoneha, *314. 

 -Icteonia. *339. 

 Acteonina, *314. 

 ActinocamrAx, 175. 

 Actinoceras, *191. 

 Actinoconchus, 373. 

 Actinocyclus, *329. 

 Actinoclonta, 432. 

 Acuarii, *174. 

 Acus, 220. 

 Adacna, *454. 

 Adamsiella, *30S. 

 Adductor impressions, 401. 

 ddelopneimiona, 2S5. 

 Adeorbis, *266. 

 Admete, 55, *216. 

 JEgean Sea Shells, 67. 

 ^girus, 327, *330. 

 ^Enigma, 403. 

 JE Aidse, *335. 

 iEolis, 323, *335. 

 ^Estivation, 13. 

 yEtheria, *435. 

 Affinities, 45. 



African region, 97. 

 Aganides, 196. 

 Agaronia, *227. 

 Agina, 490. 

 Alasmodon, 433. 

 Alcadia, *310, 

 Alcynus, 265. 

 Alderia, *338. 

 Aleutian province, 76. 

 Alexia, *305. 

 Alicula, 316. 

 AUorisma, 496, 498. 

 Alvania, 240. 

 Amalthea, *273. 

 Amalthei, *19S. 

 Amathina, *277. 

 Ambonychia, *417. 

 Amicula, 2S4. 

 Ammonites, 35, 37, *197. 

 Ammonitidffi, *195. 

 Amnicola, *247. 

 Amoura, 239. 

 Amphibola, *259. 

 Amphibulima, 290, 

 Amjyhiceras, 234. 

 Amphichsena, -436. 

 Amphidesma. 431, 483, 



497. 

 Amphidonfa, 407. 

 Amphipeplea, *301. 

 Amphisphj-ra, *317. 

 Amphorina, 335. 

 Ampidina, 236. 

 Ampidlacera, 259. 

 Ampnllaiia, 14, 27, 32, 



*258. 

 Ampultina, 310. 

 Amusiinn, 411. 

 Amusium, *412. 

 Anadenus, *296. 

 Analogies, 45. 

 Anapa, *4S5. 

 Anastoma, *289. 

 Anatina, *495. 

 • Anatina, 431. 

 Anatinella, *479. 

 Anatinidse, *494. 

 Anntomus, 269. 

 Ancillaria, 24, *227. 

 Ancistrochirus, 171. 

 Ancistroteuthiff, 1 71. 

 Ancula, 327, *331. 



Anculotus, 247. 

 Ancjioceras, *200. 

 Ancjius, 287, *302. 

 Aneitea, *297. 

 Atiisoceras, 200. 

 Annulati, *199. 

 Annulosa, 2. 

 Anodon, 30, «434. 

 Anolax, *220. 

 Anomalocardia, 424, 473. 

 Anomia, 19, *408. 

 Anoplomya, 496. 

 Anoplotheca, *379. 

 Anops, 342. 

 Anthracosia, *470. 

 Antigone, 473. 

 Antilles, shells of, 110. 

 Antiopa, *337. 

 Aperostojna, 308. 

 Aperture, 206. 

 Apex, 205. 

 Apioceras, 193. 

 Aplexa, 302. 

 Aploceras, 194. 

 Aplustrum, *31S. 

 Aplysia, 11, 22, 23, 24,*-320, 

 Aphjsia, 321. 

 Apl3'siadee, *320. 

 Aporrhais, 211, »244. 

 AptT/chus, 182. 

 Aquiferous system, 24. 

 Arabian shells, 93. 

 Aralo-Caspian prov., 63. 

 Ai-ca, 30, 395, *424. 

 Arcadee, *424. 

 Architectoma, 253. 

 Arcinella, 437, 471, 502. 

 Ar corny a, 497. 

 Arctica, 464. 

 Arctic province, 57 — 59. 

 Areopagia, 480. 

 Argentine region, 114. 

 Argiope, *368. 

 Argonauta, 28, 31, 39, 56, 



*161. 

 Argus, 411. 

 Arietes, *198. 

 Arion, *296. 

 Ariophanta, *290. 

 Armati, *19S. 

 Artemis, *474. 

 Articulated operc, 208, 



