102 



We have now concluded the description of the Helix 

 family. 



Nottinghamshire, it will be observed, is deficient of 

 some of the largest, the most beautiful, and most 

 curious of this branch of British shells, viz.: — 



Helix pomatia. The largest British land shell. It 

 is confined to the south of England. 



Helix APERTA. Confined to Guernsey, where it is 

 very rare. 



Helix cantiana. 



Helix carthusiana. Only found in Kent and 

 Surrey. 



Helix pisana. Only found in Cornwall, South 

 Wales, and in the south east of Ireland. 



Helix obvoluta. A Hampshire shell. 



Helix lapicida. In limestone and chalk districts. 



Helix rufescens. Generally distributed. 



Helix lamellata. Chiefly in the north of England. 



Helix fu^ca. 



Helix umbilicata. 



Of these it i"? pns';i!)ie that some of the five last- 

 named species may yet be added to the shells of this 

 neii^hbourhood, hut any of the others it is hopeless to 

 expect' to discover. 



Bulimcs. 



This class of land snails have produced spiral taper- 

 ing shells, differing much from the Helix family. The 

 Bulimi are not polished ; the aperture and columella is 

 entire. 



The general appearance of the animal resembles 

 that of the Helices. 



