[ X4 ] 



F I G. 50. 



TURBO Sex anfractibus apertura ovali bidentata. 



The double toothed turbo of fix fpires and an oval aperture, 



The colour opaque brown and glofly, 



On the roots of ruflies in marflies near Faverfham — very common. 



F I G. 51. 



TURBO Striatus fex anfractlbus apertura ovali bidentata marginata. 



The ftriated double toothed marginated turbo of fix fpires and an 



oval aperture, 

 The colour femipellucid white. 

 In the moITy banks of a flream near Faverfliam — common; 



F I G. 52. 



TURBO Quatuor anfraclibus fubumbilicatus reticulatus apertura ovali. 



The reticulated four fpired fubumbilicated turbo witii an oval aperture 

 The colour pellucid white. 

 From Shepey ifland — very rare. 



F I G. 53. 



TURBO Quatuor anfraflibus apertura unidcntata. 



The four fpired turbo with a one toothed oval aperture, 



The colour brown femipellucid glolfy, 



In mofs of boggy ground near Faverfliam — not uncommon. 



F I G. 54 



