264 



ti^e haMt of that (liell, but is readily diftinguinied from it, 

 by being rather more flender, not fo large in the body vo- 

 lution, the fpires a little rounded, not flat at the top, and 

 the colour is never white: the ribs, too, are generally 

 more in number. 



We have taken it alive by dredging on the coafl: of De- 

 vonJJiire, of a dark purplidi colour, probably its ufual ap- 

 pearance in that ftate: as all thofe of a different colour from 

 other places were dead iliells, and deprived of much of 

 their beauty. 



10. 

 SiNuosus. M. with a flrong, thick, white (hell, with fix coflated 



Tab. 9. f. S. volutions, tapering to a fine point: the fpires are very 

 little railed, and feparated only by a fine thread-like line : 

 the ribs are feven on each fpire, flrong, much elevated, 

 and arched, but do not quite extend to the upper part of 

 ^ach : the whole flicll is finely and regularly flriated tranf- 

 verfely, or acrofs the ribs, and is moft conlpicuous in the 

 deprelfions betM'een them : aperture narrow, oblong-oval ; 

 canal fliort, and not much contrafted ; at the upper angle 

 is a dcQ-^Jinus ; the outer lip is flightly thickened by a rib ; 

 inner lip replicated on the Columella. Length three-quar- 

 ters of an inch ; breadth a quarter. 



VVe were favoured with this new, and rare fpecies, by 

 Mr. Bryer o^ Weymouth, who found it on the fliore near 

 that place. It is at once diflinguiflied from all other Eriiijli 



fpecies. 



