30Q 



16 

 T. with a conic, pellucid, horn-coloured fhell, withCANALis. 

 five fmooth, rounded volutions, the lower one large in Tab. 12. f. 11. 

 proportion to the reft : apex pointed : aperture fub-orbi- 

 cular, fub-angulated ; outer lip extremely thin ; pillar 

 lip broad, white, furniftied with a channel or groove, 

 terminating in an umbilicus. 



This fpecies has fomewhat the habit of Helix tentacu- 

 lata, but is at once difcriminated by the aperture, and 

 groove on the Coluviella ; is alfo a marine fhell. It rarely 

 exceeds three eighths of an inch in length, and a quar, 

 ter in breadth. We found this only on the fliore near 

 Southampton, wjiere it is plentiful : and with it what muft 

 be confidered a variety, with two brown bands on the 

 body ; in every other refpeft the fame : fuch however is 



rare. 



*■ 



17. 

 Turbo laevis quinque anfraftlbus apertura fub-rotunda mar- Crassior. 

 ginata. Walk. Min. Shells, f. 24. 



T. with a ftrong, thick, opaque, yellowifli-white, co- 

 nic (hell, with five rounded volutions, divided by a deep 

 depreflion, and terminating in a fine point : aperture fub- 

 orbicular ; pillar lip wrinkled, that and the infide white. 

 Length half an inch ; breadth a quarter. Live fliells are . 

 covered with a thin, light yellowifh-brown epidermis, be- 

 neath which a few obfolete ftriee are obferved in a fpiral 

 direftion on the body whirl. 



It 



