XIT CONTENTS. 



PA»H 



Fam. rV. ArcadcB. — Area, Cucullaea, Pectunculus, Limopsis, 

 Nucula, Isoarca, Leda, Solenella, Solemya 424 



Fam. V. Trigoniadcs. — Trigonia, Myophoria, Axinus, Cur- 

 tonotus, Pseudaxinus, Lyrodesma 430 



Fam. VI. TInionidce. — Unio, Castalia, Anodon, Iridina, 

 Mycetopus, JEtheria, Miilleria 432 



Segtion B. Siphonida : Integro-pallialia 436 



Fam. VII. Chamidcs. — Chama, Diceras, Reqiiienia 437 



Fam. VTIl. Hippuritidce. — Hippuiites, Eadiolites, Capri 



jieUa, Caprina, Caprotina 440 



Fam. IX. TridacnidcB. — Tridacna 451 



Fam. X. Cardiada. — Cardium, Conocardium 453 



Fam. XI. LucinidcB. — Lucina, Cordis, Tancredia, Diplo- 



donta, Ungulina, KeUia, Montacuta, Lepton, Galeomma 155 



Fam. XII. Cy clad idee. — Cyclas, Cyrena, Cyrenoides 46 i 



Fam. XIII. CyprinidcB. — Cyprina, Circe, Astarte, Goiildia, 

 CrassateUa, Isocardia, Cypricardia, Pleiu'opliorus, Cardilia, 

 Megalodon, Pachydomus, Pachyi-isma, Opis, Cardinia. 

 Myoconclia, Cardita, Verticordia 463 



Section C. Siphonida ; Siau-pallialia 472 



Fam. XTV. Veneridcs. — Venus, Cytherea, Meroe, Trigona, 



Artemis, Lucinopsis, Tapes, Venerupis, Petricola, Glau- 



comya 472 



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



traria, Anatinella 477 



Fam. XVI. TellinidcB. — Telliria, Gastrana, Capsula, Quen- 



stedtia, Psammobia, Sanguiaolaria, Semele, Mesodesma, 



Ervilia, Donax, Galatea 479 



Fam. XVII. Solenidce. — Solen, Cultellus, Solecurtus 486 



Fam. XVIII. Myacidce. — Mya, Corbula, Nesera, Thetis, 



Panopsea, Glycimeris 489 



Fam. XIX. Anatinidce. — Anatina, Eibeiria, Thracia, Phola- 



domya, Myacites, Ceromya, Cardiomorplia, Edmondia, 



Lyonsia, Pandora, Myadora, Myochama, Chamostrea .... 494 

 Fam. XX. Gastrochcenidce. — Gastrocliaena, Saxicava, Ciava- 



gella, Aspergillum, Huniphreyia 500 



Fam. XXI. Fholalidce. — PLolas, Pholadidea, Xylophaga, 



Teredo 503 



Index 508 



