PANOP^A.— Plate VI, 



The AusTiiALiAN Panui-.ea. Shell rather thin, white, 

 very widely gaping on both sides, concentrically 

 wrinkled, very inequilateral; anterior side very 

 wide, reflected, dorsal margin elevated, convex ; 

 middle compressed, ventral margin concave, um- 

 bones acuminated; posterior side narrower, oblong, 

 truncated, dorsal margin 



SowEUBY. Genera of Shells. No. 40. 



Hah. Tasmania. 



Several specimens of this species e.vist in the collec- 

 tion of the British Museum, and although ratlier light 

 and thin, appear to be adult. A drawing of one of 

 these was sent to M. Valenciennes, who considered it 

 to represent the young state of tlie large shell which he 

 has figured in the " Illustrations Conchyliologiques.'' 

 and which, in our plate, three of this genus is named 

 Panopaa attenuata. 



