65 



milky whiteness more confined to the edge of the um- 

 bilicus. 



As yet it has been considered as a local species in 

 England. 



It is found in woods and at the sides of hedges, under 

 stones and amongst moss. 



In this neighbourhood it is found at Highfield House, 

 Sawley, and at Nottingham Castle. 



More remote localities are, Newcastle (A)der), Ken- 

 dal (Gough), Scarborough (Bean), London (Grey), 

 Essex (Sheppard), Norwich (Bridgman), North Devon, 

 Kent, and Wilts (Jeffreys), and Penzance (Millett). 



In the Isle of Man (Forbes). 



Generally distributed in Ireland (Thompson). 



On the Continent in Germany (Pfeiffer). 



ZoNiTES puRUS (The Delicate Snail). Alder. 

 Figures 37 and 38. 



19. 



This delicate and not very common shell is nearly 

 smooth, glossy, transparent, depressed, and having a 

 blnnt apex. The mouth of the shell is placed 

 obliquely; it is large, rounded, and not so high as it is 

 broad. The peristome is thin, and is not reflected, 

 Umbilicus deep and somewhat large. There are from 

 three and a half to four convolutions. The shell is 

 about two lines in diameter, and more frequently not so 

 much. 



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