66 



There is a pale horn -coloured variety, probably 

 owing to situation only. 



In describing this shell, which more closely resembles 

 Zonites crystallinus than any other British species, it 

 may be remarked that it can be easily recognized from 

 that snail from not having so many convolutions, the 

 convolutions being not so closely set, having a larger 

 umbilicus, the outer whorl larger in proportion to the 

 others, and the shell somewhat larger and more convex. 



The colour of the animal is white, with two black 

 lines; the mantle white, marbled with black. 



Specimens received from Mr. Alder and Mr. Damon 

 closely resembled those found in this neighbourhood. 



Zonites Purus was discovered by Mr. Alder, and des- 

 cribed in 1830, in his " List of Newcastle Shells.^' 



It is an inhabitant of woods, amongst moss; also 

 found under stones and decayed leaves; being most 

 abundant in the north of England. 



It is rare in this neighbourhood, but found at Oxton, 

 Highfield House, Stanton, and Bulwell. 



It is also found at Newcastle-upon-Tyne (Alder), and 

 at Chaigeley and Thornley, Lancashire (The Author.) 



In Ireland, Cabinteely, county of Dublin (Brown), 

 and widely spread (Thompson). 



Mr. Grey remarks it has not been found in Germany. 



Zonites Radiatllus (The Rayed Snail). Alder. 

 Figures 39 and 40. 



ie. 



Z.O. 



