137 



colour, others almofl white, with zigzag, angular ftripes of 

 chefnut, or orange-yellow, in younger fhells the mark- 

 ings are frequently of a carnation colour. It is faintly 

 flriated longitudinally, with tranfverfe, antiquated v/rinkles 

 or ridges : umbo large, central, and not turned to either 

 lide. Infide white, with fometimes a little purplifh-brown 

 at one end ; margin ftrongly crenated. Diameter two 

 inches and a half, or more. 



This fpecies and the Area glycymeris have been greatly 

 confounded, and indeed it is not an eafy matter to afcer- 

 tain them by the fynonyms of Gmelik. 



Lister has given a very good figure of this fl^icll, and 

 marks it as Englijli, as well as from Giiernfey ; this how- 

 ever is quoted by Gmelin for his Glycymeris. We have 

 had fome doubt whether thefe two (hells are aftually dif- 

 tinft, and whether the variation may not be occafioned 

 by climate. Do6lor Pultemey exprefsly fays, they are 

 totally different; we have therefore followed that able 

 conchologift, in giving it as the j!^z7o/?i of Linn^us. 



This fliell is in great abundance on the Ihore near Pen- 

 dennis Cajile in Cornwall, of a large fize, but all worn 

 and mutilated, as if driven from a confiderable diftance. 



We have obtained it by dredging, on the fouth coafl; of 

 Devon, but rarely alive, except fmall fpecimens: is alfo 

 taken on the Dorfet coaft by dredging, at Weymouth and 

 at Swanage ; and we have received it from Kent. 



T Area 



