P A N P tE A. 



Species 2. (Mus. Brit, aud Lainarck.) 



I'ANor^EA Faujasii. Pan. testa magna, a-assiitfcitla, in- 

 Jlata, altu, snbcequilaterali, Icevigata, sulinigata, 

 latere antico brevnisculo, rotxindo, alto ; medio f<uh- 

 planiilato, vmhonilrus magnis, prominentibus ; latere 

 postico angiisfiiisculo, elongatiusculo, ad terminum 

 urciiatim elevato, truncato ; margine dorsali convexo. 



Faujas's Panop^sa. Shell large, rather thick, inflated, 

 deep, rather equilateral, smooth, somewhat 

 wrinkled, anterior side rather short, rounded, 

 deep; middle rather flat, umbones large, pro- 

 minent ; posterior side rather narrow and 

 lengthened, raised at the end in a curve, trun- 

 cated ; with the dorsal margin depressed convex. 



Mknarii (de St. Croix). Fossiles d'ltalie. 



//„/,. ? Recent. 



M. Valenciennes remarks in his monograph in the 

 Illustrations Conchyologiques oi'Chemn., that the recent 

 shell figured in Plate II. of liis work and copied in ours, 

 is wrongly referred to this species. He states that it is 

 one of two specimens in the collection of Lamarck in the 

 Paris Museum, and that it is only a variety of Panopcea 

 Aldrovandi. Now it must be observed, first, that both 

 his shell and' one in the British Museum differ in 

 several respects from P. Aldrovandi, and secondly that 

 in describing P. Faujasii &s a fossil only M. Valenciennes 

 points out the same differences between the two species, 

 as those which exist between the recent shells. P. 

 Aldrovandi is narrow and pointed at the anterior side, 

 and broad truncated at the posterior, while the reverse 

 is the case with P. Faujasii. 



February, 1873. 



