155 



CVCLOSTOMIDiE. 



Pulmonifera having an operculum. 



NottiDgham is deficient of this intereresting family. 



They comprise: — 



CrCLOSTOMA. 



A spiral turreted shell with oval aperture and strong 

 operculum. Only one British species, which is a large 

 and strong shell. 



CrCLOSTOMA BLEGAN8. 



This handsome species is ', ."^y a southern shell 

 although found in Yorkshire, and in one locality near 

 Kendal. 



Turreted cylindrical shell with egg-shaped aperture 

 and thin operculum, only one British member. 



ACME LINEATA. 



Better known as the Acme fusca (of Grey), a rare but 

 widely spread minnte shell. 



Probably either this or the preceding species may 

 eventually be added to our local catalogue. 



This concludes our list of land and fresh water shells- 



