INDEX, 



Tlia sjTionj-ms are printed in italics, and the pages where the genera are described are 

 indicated by an asterisk (*). 



Abbreviations, 49. 

 Ab7-r/, 4S3. 

 Abrnlia, 171. 

 Acunthinrt, 223. 

 Acantiiochites, *'^S4. 

 Acanthodoris, *332. 

 Acanthopleura, *283. 

 Acanthoteutliis, *175. 

 Acanthothyris, 375, 

 Acardo, 323, 454. 

 Acavus, *289. 

 Acephala, 5. 

 Aoera, *316. 319. 

 Acliatina, *292. 

 Achatiiiella, «292. 

 Acicuhi, *310. 

 AciculidEe, *310. 

 Aclesia, *'321. 

 Aclis, *240. 

 Acmaea, *281. 

 Acmaca. 311. 

 Acme, 311. 

 Acoeli, *174. 

 Acostcea, 435, 

 AcrocuUa, 277. 

 Acroloxiis, 302. 

 Acrotrcta, *390. 

 Act (eon, 313, 339. 

 Acteonella, ^314. 

 Acteonia. *339. 

 Aoteoniiia, *314. 

 ActinocanidX, 175. 

 Actinoccras, *191. 

 Actinoconc/nis, 373. 

 Actinocj'chi.s, *329. 

 Actinodonta, 432. 

 Acuarii, *174. 

 AcHS, 220. 

 Adacna, *454. 

 Adamsiella, *30S. 

 Adductor impressions, 401 

 Addopncianona, 2S5, 

 Adeorbis, *26t5. 

 .Admete, 55, *21fi. 

 iE(i;carf Sea Shells, 67. 

 iEtfirus, 327, *330, 

 Enigma, 408. 

 y"E )lida;, *335. -••• 



/Tlolis, 323, *335. 

 ^Estivation, 13, 

 JEtberia, *435. ■J 



Affinities, 45. 



African region, 97. 

 Aganides, 196. 

 Agaronia, *227. 

 Agi7ia, 490. 

 Alasmodun, 433. 

 Alcadia, *310. 

 Alcynus, 265. 

 Alderia, *338. 

 Aleutian province, 76. 

 Alexia, *305. 

 Alicula, 316. 

 AUorisma, 496, 493. 

 Alvania, 210. 

 Amalthea, *278. 

 Amaltliei, *198. 

 Amathina, *277. 

 Ambon3'chia, *417. 

 Amicula, 284. 

 Ammonites, 35, 37, *197. 

 Ammonitidae, *195, 

 Amnicola, *247. 

 Amourn, 239. 

 Amphibola, *259. 

 Amphibidima, 290. 

 Amphceras, 234. 

 Amphicheena, *4S6. 

 Amphidesma. 431, 4S3, 



497. 

 Amphidonta, 407. 

 Amphipeplea, *301. 

 A mphisp] 1 yra, * 31 7 . 

 Amphorina, 335. 

 Ampulina, 236. 

 AmpuUaccra, 259. ' 

 Ampnllaria, 14, 27, 32, 



*258, 

 Ampxdtlnn, 310. 

 Amusium, 411. 

 Amusium, *412. 

 Anadenu.s, *296. 

 Analogies, 45. 

 Anapa, *485. 

 Anastoma, *289. 

 Anatina, *495. 

 Anatina, 431. 

 Anatinella, *479. 

 Anatinidse, *494. 

 A7into7nns, 2G9. 

 AnciUaria, 24, *227. 

 Ancistrochiriis, 171. 

 Ancistroteuthis, 171. 

 Ancula, 327, *331. 



Anculotus, 247. 

 Ancvloceras, *200. 

 Ancylu?, 287, *302. 

 Aneitea, *297. 

 Anisoceras, 200. 

 Annivlati, *199. 

 Annulosa, 2, 

 Anodon, 30, *434. 

 Anolax, *220. 

 Ayiomalocardia, 424, 473. 

 Anomia, 19, *408. 

 Anoplomya, 496. 

 Anoplotlieca, *379, 

 Anops, 342, 

 Anthracosia, *470. 

 Antigone, 473. 

 Antilles, shells of, 110. 

 Antiopa, *337. 

 Aperostomn, 308. 

 Aperture, 206. 

 Apex, 205. 

 Apiocems, 193. 

 Aplexa, 302, 

 Aploceras, 194. 

 Aplustrum, *318, 

 Aplj'sia, 11, 22, 23, 24,*320, 

 Aplysia, 321. 

 Aplysiadee, *320. 

 Aporrhais, 211, »244. 

 Aptychus, 182. 

 Aquiferous system, 24. 

 Arabian shells, 9S. 

 Aralo-Caspian prov., 63. 

 Area, 30, 395, *424. 

 ArcadEC, *124. 

 Architcrtomn, 253. 

 Arcinella, 437, 471, 502. 

 Arcomya, 497, 

 Arctica, 464, 

 Arctic province, 57—59, 

 Arcopagia, 480. 

 Argentine region, 114, 

 Argiope, *36S. 

 Argonauta, 23, 31, 39, 56, 



*161, 

 Argus, 411. 

 Arietes, *198. 

 Arion, »2i>6. 

 Ai-iophanta, *290. 

 Armati, *193. 

 Artemis, *474. 

 Articulated operc, 208. 



