TABLE DES GENRES 



Acera 329 



Acicula 276 



Aciis 297 



Aclscon 328 



Acteonia 338 



Adeorbis 314 



yEgirus 33o 



Alcyonella 395 



Amaroucium .... 389 



Amphisphyra .... 330 



Ancylus 272 



Anguinaria 400 



Anodonta 3o8 



Anomia 345 



Aplidium 389 



Aplysia 332 



Arca. 354 



Argiope 392 



Artemis 372 



Ascidia 386 



Astarle 370 



Astellium 390 



Avicula 349 



Bicellaria 398 



Bithynia 302 



Botrylloïdes • . . . 388 



Botryllus 387 



Buccinum 281 



Bugula 399 



Bulla 328 



Bullœa 331 



Calliostoma 319 



Calyplrœa 322 



Cardium 360 



Cassis 284 



Cellaria 398 



Cellepora 397 



Cerithium 298 



Chemnitzia 295 



Chiton 325 



Clavelina 386 



Gœcum 299 



Corbula 381 



Coriocella 292 



Crania 392 



Crepidula 323 



Crisia 401 



Crislalella 395 



Cyclas 365 



Cyclostoraa .... 274 



Cyclostrema .... 314 



Cylichna 329 



Cyprœa 290 



Cyprina 370 



