o 



11 



T. with a Ilrong, conic fiiell, with five or fix vohitl- 

 ons, coaiTely ribbed : colour various; fome gloffy white 

 others dark chefnut-brown, or pale rufous, fometimes 

 variegated ; but the moft beautiful fpecimens are dark 

 with white ribs: aperture fub-orbicular; outer lip thick- 

 ened by a rib. A variety is only ribbed on the lower 

 volution ; others are fometimes found worn quite fmooth 

 and gloffy, and might readily be miftaken for diftinft 

 fpecies ; but this is not unufual with many fmall (hells 

 taken amongfl finefand, by the conftant fritlion of which 

 they are worn and polifhed. The general fize is about 

 one eighth of an inch in length. Perfeft (hells have the 

 ribs ftrong and diftant, from nine to eleven on the body 

 whirl. 



We have found this fpecies in great abundance in 

 Cornwall, particularly at the land's end, and at fal- 

 ffioufh; and not uncommon on the coaft of DevonJUiire, 

 DorfeiJIare, and various other parts ; indeed, it appears 

 to be one of the mofl common (liells on all our fand\ 

 fliores. 



Da Costa mentions it from Gucr 



n 



19. 

 Turbo coftatus. Lin. Tram. iii. p. 65. t.l3. f.I3.14.(^(/<7/nj-j Costatcs, 



Turt. Lin. iv. p. 4S7. Tab. 10. f. 6. 



Walk. Min. Shelh. f. 47. 

 Tu"-bo craffus. Turt. I.in iv. p. 500. 



Adams Microfc. t. 14. f. 20. 



T. with 



