Xll CONTENTS. 



PAGE 



Fam. XII. Oycladidce. Cyclas, Cyrenoides, Cyrena 296 



Fam. XIII. Cyprinidce. Cyprina, Circe, Astarte, 

 Crassatella, Isocardia, Cypricardia, Pleui'ophorus, 

 Cardilia, Megalodon, Pachydomus, Pachyrisma, 

 Opis, Cardinia, Myoconcha, Hippopodium, Car- 



dita, Venericardia, Yerticordia . . 298 



SECTION C. SIPHONIDA; sinu-pallialia 304 



Fam. XIV. Yeneridce. Yenus, Cytherea, Meroe, 

 Trigona, Grateloupia, Artemis, Lucinopsis, Tapes, 

 Yenerupis, Petricola, Glaucomya 304 



Fam. XF. Mactridce. Mactra, Gnathodon, Lu- 

 traria, Anatinella 308 



Fam. XFI. Tellinidce.Teftma, Diodonta, Capsula, 

 Psammobia, Sanguinolaria, Semele, Syndosmya, 

 Scrobicularia, Mesodesma, Ervilia, Donax, Galatea 309 



Fam. XFII. Solenida. Solen, Cultellus, Cerati- 

 solen, Machaera, Solecurtus, Novaculina 314 



Fam. XVIII. MyacidcB. Mya, Corbula, Sphenia, 

 Neaera, Thetis. Panopsea, Saxicava, Glycimeris 317 



Fam. XIX. Anatinida. Anatiria, Cochlodesma, 

 Thracia, Pholadomya, Myacites, Goniomya, Ce- 

 romya, Cardiomorpha, Edmondia, Lyonsia, Pan- 

 dora, Myadora, Myocliama, Chamostrea 320 



Fam. XX. GastrocJianidce. Gastrochsena, Chsena, 

 Clavagella, Aspergillum 325 



Fam. XXI. Pholadidce. Pholas, Pholadidea, Jouan- 

 netia, Xylophaga, Teredo, Teredina 327 



