XU CONTENTS. ! 



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Fam. XII. Cycladidce. — Cyclas, Cyrenoides, Cyrena 296 • 



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



Crassatella, Isocardia, Cypricardia, Pleurophorus, ] 



Card ilia, Megalodon, Pachydomus, Pachyrisma, ! 



Opis, Cardinia, Myoconcha, Hippopodium, Car- ' 



dita, Venericardia, Verticordia 298 



Section C. Siphonida; sinu-pallialia 304 ; 



Fam. XIV. Veneridce. — Yenus, Cytherea, Meroe, \ 



Trigona, Grateloupia, Artemis, Lucinopsis, Tapes, \ 



Venerupis, Petricola, Glaucomya 304 



Fam. XV, Mactridce. — Mactra, Gnathodon, Lu- 



traria, Anatinella 308 ' 



Fam. XVI. TellinidcB. — Tellina, Diodonta, Capsula, 



Psammobia, Sanguinolaria, Semele, Syudosmya, h 



Scrobicularia, Mesodesma, Ervilia, Douax, Galatea 309 



Fam. XVII. Solenidce. — Solen, Cultellus, Cerati- 



solen, Maclisera, Solecurtus, Novaculina 314 ' 



Fam. XVIII. Myacidce. — Mya, Corbula, Sphenia, 



Neaera, Thetis, Panopsea, Saxicava, Glycimeris 317 '' 



Fam. XIX. Anatinidce. — Anatina, Cochlodesma, 



Thracia, Pholadomya, Myacites, Goniomya, Ce- i 



romya, Cardiomorpha, Edmondia, Lyonsia, Pan- | 



dora, Myadora, Myocliama, Chamostrea 320 



Fam. XX. Gasti'oclicenidce. — Gastrochsena, Chsena, 



Clavagella, Aspergillum 325 ' 



Fam. XXI. Pholadidce. — Pliolas, Pholadidea, Jouan- 



netia, Xylopliaga, Teredo, Teredina 327 , 



