271 



We found tliis fpecies, in drifted fand, at the month of 

 the Aun in Devoiijhire, fparinglv. It has alfo been picked 

 up on the coall ol' SaJidzvic/i, by Mr. Boys. 



^ 13. 



Turbo turrltus perverfus novem anfraftibus punftatus aper- Adversus. 

 tura coardata. IValk. Min. Shells, f. 48. 



Chem. Conch, ix. t. 113. f. 9fa6 ? 

 Turbo Pundatus. Turt. Lin. iv p^ 501. 



Adams Microfc. t. 14. f. 21. 



M. with ten or eleven, reverfed, tuberculated fpires^ 

 tapering to a fine point: the volutions fcarcely defined by 

 the feparating line, with three ferirs of tubercles on each, 

 the middle row fmaller than the others : aperture oval, 

 ending in a iirait canal ; bafe with two or three fraooth, 

 fpiral ridges. Length three-eighths of an inch; fome- 

 times, though rarely, half an inch ; breadth not quite 

 one-eighth. Colour opaque light brown. 



This fpecies has much the habit of the preceding, but 

 is at once diflinguilhed by the volutions turning the con- 

 trary way. 



It differs alfo a little in the fhape of the aperture and 

 canal : and particularly, in the middle feries of the tuber- 

 cles being fmaller. 



We firft received this fhell from Mr. Boys, for that of 

 Walker's above quoted ; and have fince found it fparing- 

 ]y on the Cornijh and Devonjhire coails, 



Strom- 



