294 TURBO. WREATH-SHELL. Class VI. 



Abundant on most rocks, far above low- 

 water mark. The Swedish peasants believe, 

 that when these shells creep high up the rocks, 

 they indicate a storm from the south. 



They are called P err 'twinkles ; are sold com- 

 monly in London, and eaten by the poor ; as 

 they are in most parts of the kingdom. 



3. RUDIS. Lin. Tr. viii. 15(). Mont. Test. Br. 304. t. 4. /. 12. 13. 



* T. with a subovate, rather obtuse shell ; volu- 

 tions tumid ; diameter three quarters of an 

 inch. 



Found on the banks of the Tamar, in Dor- 

 setshire, Kent, and Caithness. 



4. crassior. Lin. Tr. viii. 15Q. Mont. Test. Br. 30Q. id. 



Sup. t. 20./. 1. 



* T. with a conic rough shell, striated length- 

 ways ; the first volution somewhat ridged ; 

 length half an inch; breadth a quarter of an 

 inch. 



Sandwich and Biddeford bay. 



