281 



Have alfo received a fingle fpecimcn from Wales, and 

 another from Kent; and obferved one in Mr. Bryer's 

 cabinet at Weymouth, found on that fliore. 



Animal pale, with a {qv7 dun<;y fpots above at the pofte- 

 rior end, and a tranlverfe flreak of the fame behind the 

 lip: tentacula two, fetaceous; eyes black, placed on pedi- 

 cles behind the tentacula, and capable of turning about 

 in various direftions: on the fides of the pofterior end are 

 four flender appendages, originating from under the cor- 

 neous operculum, which is fixed to that part. 



6. 

 Troclius crafTus. Piilt. Cat. Dorfct. p. 44. Crassus, 



Trochus lineatus. /(/. p. 44. 

 Turbo lineatus. Da Cofia p. 100. t. 6. f. 7. • 



Don. Br. Shells, ii. 't. 71. 



Turt. Lin. iv. p. 4S0. 



T. with a (Irong, thick, fub-conic fiiell, with five round- 

 ed volutions, feparated by a fmall deprelTed line : apex 

 moderately pointed when perfe6l, but generally worn and 

 decorticated: colour cinereous, or light brov/n, covered 

 with fine, clofe fet, zigzag lines, of purplifii -brown ; and 

 fometimes dark purplifh-black : aperture rounded on the 

 outer lip, angulated at bottom, furnifhed at that part v/itha 

 blunt, tooth-like protuberance; outer lip acute, inner mar- 

 gin purplifh; pillar lip fmooth, white, not pearly ; the white 

 part extends almoflacrofs the bafe, and is a little flattened 

 as if worn, but is an invariable charatler : in fome a flight 



O o umbilicus. 



