42 



nearly central ; valves not capable of clofing at the fmaller 

 end. Infide white: a broad tooth in each valve hollowed 

 in the middle, projefting horizontally inwards; the teeth 

 when clofed cover each other, and by which they arc 

 held together by the connecting cartilage. Length above 

 Italfaninch, breadth one inch. 



We are informed that Petiver received his (hell from 

 Poole. It has been called Wliite Spoon-hinge, from the 

 tooth refembling the bowl of a fpoon. Dotlor Pulte- 

 NEY mentions having found it on the North fhore near 

 Broxonfea IJle, and on the fliore between Weymouth and 

 Portland ; and remarks with Tome doubt whether it is not 

 the young of the pubefcens. 



"Wehavenodoubtof itsbeingperfeflly diflinft, and con- 

 ceive if the Doftor had met with the young of the j^Mi^^^nj 

 to have compared, fuch doubts would never have exifted. 



This fliell is not truncated, is much more flat, and has 

 not that fingular flexure of the dexter valve; befides 

 which the tooth is eflentially different. 



It is not uncommonly dredged froni Falmouth Har- 

 bour, but moftly fingle valves: is alfo found on the South 

 coaft o^ Devon, where we have taken perfeft fliells. 



11. 



DisTORTA, M. With a fub-pellucid, thin, fragile, white fliell, rug- 



Tab. 1. f. 1< ged and diftorted into various fliapes ; the valves are 



convex 



