Atretia Jeffr. 
Atrina Gray 
Atropis Pease 
Atys Montf. 
Aulopoma Trosch. 
Auricula Lam. 
Auriculella Pfr. 
Auriculidae 
Avicula Brug. 
Axina Alb. 
Axinaea Poli 
Axinopsis Sars 
Azara d’Orb. 
Azarella Gray 
Azeca Leach 
Azecastrum Bgt. 
Azor Gray 
Elalea Prid. 
Baleastra Pfr. 
Bankivia Beck 
Barbala Humphr. 
Barbatia Gray 
Barnea Risso 
Bathyomphalus Ag. 
Batissa Gray 
bBeccaria Trinch. 
Beguina Bolt. 
Bensonia Pfr. 
Berendtia Crosse 
Berthella Blv. 
Binuneyia Coop. 
Blainvillia Hup. 
Blandia Chitty 
Blandiella Gupp. 
Blanfordia Ad. 
Blauneria Shuttl. 
Boettgeria Heyn. 
Bolma Risso 
Boltenia Pfr. 
Bornella Gray 
Bornia Phil. 
borus Alb. 
Bostrychocentrum Streb. 
Bostryx Troschel 
Botula Mörch. 
Douchardia Dav. 
Boureieria Pfr. 
Joysia Pfr 
Brachychlamys Ehrbg. 
Brachydontes Swains. 
Brachyspira Pfr. 
Brechites Guett. 
Broderipia Gray 
Brondelia Bgt. 
Bryopa Gray 
Bryophila Carp. 
Bucardium Gray 
Buceinulus Plane. 
Buchanania Less. 
Buckleyia Higg. 
Bulimella Pfr. 
Buliminus Ehrbg. 
Bulimus Scop. 
Bulimulus Mart. 
Bulinus Adans. 
Bulla L 
Bullaea Lam. 
Bullina Fer. 
Seite 
380 
367 
200 
174 
192 
305 
293 
302 
305 
254 
370 | 
351 
319 
355 
278 
278 
317 
284 
254 
160 
359 
368 
312 
300 
542 
185 | 
355 
215 
269 
178 
92 
265 
324 | 
208 
187 
188 
305 
292 
153 
207 
135 
sol 
260 | 
270 
267 
304 
379 
200 
278 
181 
363 | 
295 
s15 | 
165 
Sul 
515 
366 
345 
171 
212 
195 
295 
272 
257 
265 | 
298 
173 
175 
382 
Dursatella Blv. 
, Byssanodonta d’Orb. 
Byssomya Val. 
Cadulus Phil. 
Caecella Gray 
Caeeilianella Bgt. 
Caeliaxis Ad. 
Calceola Swains. 
Calceolina Ad. 
Caliphylla Costa 
Callia Gray 
Callicochlias Agas. 
Callina Lowe 
Calliopaea d’Orb. 
Callocardia Ad. 
Callonia Crosse 
ı Callopoma Gray 
Callista Poli 
Calma Ald. 
Calobates Gould 
Calyeidoris Abr. 
Calyculina Cless. 
Camaena Alb. 
Camarga Bergh 
Cameronia Bourg. 
Camitia Gray 
Campaspe Bergh 
Camptoceras Bens. 
Camptonyx Bens. 
Campylaea Beck 
Candidula Kob. 
Canistrum Pfr. 
Cantareus Risso 
Cantharidus Mtf. 
Canthyria Swains. 
Capsa Lam 
Capsa Bose. 
Capsella Gray 
Capulacmaea Sars 
Caracolina Ehrbg. 
Caracolus Montf. 
Cardiomya Ad. 
Cardilia Desh. 
Cardinalia Gray 
Cardissa Mühlf, 
Cardita Brug 
Cardium L. 
Carelia Ad. 
Carinella Newe. 
Carinidea Swains. 
Carinigera Möll. 
Carinifex Bens. 
Carthusiana Kob. 
Caryatis Röm. 
Carychium Müll. 
Caryodes Alb 
Casella Ad. 
Cassidula Fer. 
Casta Alb. 
Castalia d’Orb. 
Cataulus Pfr. 
Catillus Humphr. 
Cavolina Brug. 
Cecilioides Blv. 
Ceeina Ad. 
Cemoria Leach 
\ Cepolis Monttf. 
172 | 
Cerasina Kob. 
Cerastoderma Poli 
Cerastus Alb. 
Ceratodoris Gray 
Ceratosoma Ad. et Rve. 
Ceres Gray 
Ceronia Gray 
Ceropsis Dall. 
Cervicobranchia Gray 
Chama L. 
Chamelaea Klein 
Chametrachaea Kl. 
Chamostrea Roissy 
Charadrobia Alb. 
Charax Bens. 
Charis Alb. 
Charopa Alb. 
Chelidonura A. Ad. 
Chersomitra Alb, 
Chilina Gray 
Chion cop. 
Chione Mühlf, 
Chironia Desh. 
Chittyia Lives. 
Chlamys Bolt. 
Chloraea Alb. 
Chlorhoea Gould 
Chloritis Beck 
Chlorostoma Swains. 
Choanomphalus Gerstf. 
Choanopoma Pfr. 
Chondrella Pease 
Chondropoma Pfr. 
Chondrula Beck 
Chondrus Cuv. 
Choristodon Jon. 
Chromodoris Aid. 
Chromotis Ad. 
Chrysallis Alb. 
Chrysostoma Swains. 
Ciliella Mouss. 
Cionella Jeffr. 
Circe Schum. 
Cistellula Gray 
Cistula Gray 
Claneulus Montf. 
Clausilia Drp. 
Clausiliastra Möll. 
Clausina Brown 
Clausina Jeffr. 
| Clavagella Lam. 
Clavator Mart. 
Cleanthus Leach 
Cleidothaerus Carp. 
Clementia Gray 
Clidiophora Carp. 
Clithon Montf. 
Clostophis Bens. 
Clypidella Swains. 
Clypidina Gray 
Cochlicella Risso 
Cochlodesma Couth. 
Cochlodryas Mart. 
Cochlostyla Fer. 
Codakia Scop. 
Coelatura Pfr. 
Colocentrum Crosse 
Coelodon Carp. 
Coelopoma Ad. 
Coilostele Bens. 
