EXPLANATIOK OF PLATES. 319 



FT&. 



117. Cjrfcliera Meretrix ; e. escutclieon. 

 117. a. C. Meroe ; Gen. Meroe. 

 117. b. C. Tripla ; Gen. Trigona. 

 117. c. C. Maculata ; Gen. Chione. 



117. d. C. Castrensis. 



118. Artemis lincta ; s, sinus in the palleal impression. 



119. Venus cancellata. Antigona, Schum. a. anterior ; p. posterior ; 



c. cardinal teeth. 

 119 a. Y. Verrucosa. Dosina, Schum. 



120. PuUastra Textile. 



Fam. Cardiacea- 



121. Venericardia, recent species, resembling V. planicostata, Lam. 



122. Cardium Dionseum. Cardissa, Sw. Hemicardium. NonnuU. 

 123. angulatum. 



123*. — Grreenlandicum. Aphrodita, Lea, Acardo, Sw. 



123**. hemicardium. Gen. Hemicardum. 



124. Cardita calyculata. 



125. Cypricardia angulata. 



126. Isocardia Moltkiana. 



127. Megalodon cucuUatus, (from Sow. Min. Con.) 



128. Hippagus Isocardioides, (from Lea.) 



129. Hippopodium ponderosum, (from Sow. Min. Con.) 



130. Pachymya gigas, (from Sow. Min. Con. 

 Cardilia, fig. 581, 582. ->. 



Papyridea, fig. 503, 504. I To be added to this family. 

 Pleurorynchius, fig. 505. J 



Fam. Arcacea. 



131. Area antiquata. 



132. Bysso-arca IN'oae. 



133. CucuUaea auriculifera, (from Sowerby's G-enera.) 



134. Pectunculus pHosus. 



135. Myopara costata, (from Lea.) 



136. Crenella. 



137. Xucula margaritacea, three views. 



138. Solenello Norrissii 

 Leda, fig. 578. ") 



NucineUa, fig. 579. j ^"^ ^® ^^*^®^ *^ *^^^ ^^"^J- 



