PEATE AxANVIi. 
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. 
