252 Mr. S. V. Wood's Catalogue of Shells from the Crag. 



* Only one fragment. 



f I have not seen the lower valve of this species. 



% Only one specimen, and that doubtful, perhaps the lower valve of compla- 

 natus. 



§ This differs from the generality of the recent British specimens only in the 

 rays being more imbricated, but Mr. G. B. Sowerby has furnished me some 

 from the Mediterranean, in which they there correspond. 



