PLATE XXVIII. 



This is one of the most singular species that is found on the British 

 coasts. It is very analagous to the famous Scalaris or Wentletrap of 

 the East Indies, which bears such a high price amongst Conchologists ; 

 and from this analogy it is called the False Wentletrap. Its length is 

 about an inch, and sometimes two inches or even more. The mouth is 

 perfectly round, and bordered with a thick ring ; from this ring arise 

 several distinct equi-distant prominent ridges, generally eight in 

 number, which extend the whole length of the shell in an obliquely 

 longitudinal direction. These ridges appear the more remarkable 

 and prominent, as the spires are very convex or swelled, and sepa- 

 rated from each other by a deep spiral channel. The colour of 

 most specimens is milk white, but is sometimes obscured with brown, 

 or marked transversely with distinct circles of ferruginous interrupted 

 lines. 



Turbo Clathratus is found on several of the British coasts. 



