Class VI. TURBO. WREATH-SHELL. 299 



Lin. Tr. viii. 164. Mont. Test. Br. 318. 18. ulva. 



ulva. 



T. with four spires, the first ventricose; of a 

 deep brown color; aperture oval. Size of a 

 grain of wheat. Tab. lxxxix. Jig. 7. 



Inhabits the Ulva Lactuca on the shores of 

 Flintshire. 



Lin. Tr. viii. 164. Mont. Test. Br. 317- t. 12. 19. ventro- 



/. 13. sus ' 



* T. a conic smooth shell, with six round volu- 

 tions ; aperture subovate ; margin very entire ; 

 minute ; inhabits the sea. 



Not uncommon on the Kent and Dorsetshire 

 coasts. 



Lin. Tr. viii. 165. Mont. Test. Br. 316. 20. SUBUM- 



BILICATUS. 



* T. with a conic subumbilicated shell ; volu- 

 tions, four or five tumid; aperture perfectly 

 oval ; length one eighth of an inch ; breadth 

 one tenth of an inch. 

 Weymouth. 



