147 



In the Boyfian, a.<? well an the Portland rahittft, this is 

 named Turbo Mufa>rum ; and in the latter, th«i try is marked 

 in another place Turbo polyodais* 



By the fpecimens in the Boyfian cabinet, we have no Globosa. 

 doubt this fhell of Walker, as well as Helix coarctata, is the p- 444. 

 fry of fome other fpecies. 



Shell comprefled, glofly, white, with three volutions def- Serpuloides. 

 \\umq q{ Jlrice : a/>ex deprefled, fcarcely elevated above the Tab. 21. f. 3. 

 other whirls : aperture orbicular, flightly adhering to the 

 body, and turning confiderably downwards, forming a large 

 and deep umbilicus : the under part lliews the volutions more 

 round and diftinft than any other Briti/Jj fpecies of marine 

 iejlacea we are acquainted with. It bears fome refemblance 

 to Helix deprejfa, but differs in the flight connection of the 

 whirls, and the fuperior cylindric appearance of them under- 

 neath. It is about the fize of that fhell, but not of the fame 

 colour. Devon coaft, extremely rare. 



Turbo cristatus. L'ni. Trans, viii. p. \69. Cristata, 



p. 460. 

 This was marked in the Portland cabinet, Helix, cornea 



minime. 



Ta ViRGATA, 



