69 



ZoNiTEs NiTiDUS (The Shining Snail). Muller. 

 Figures 43 and 44. 



More generally known as tbe Helix lucida of Drapar- 

 naud, Alder, Turton, Thompson Brown, and L. 

 Pfeiffer, and as the Zonites Lucidus of Grey. Tbe pre- 

 sent name has been adopted by Professor Forbes from 

 tUe Helix nitida of Miiller, Jeffreys, Lamark, and C. 

 Pfeiffer. 



It was added by Mr. J. E. Grey, and described, in 

 1821, in the •' Medical Repository ." 



A very lucid shell, of a browish born-colour. It is 

 depressed, pellucid, has from four and a half to five 

 convolutions, a large umbilicus, and a nearly circular 

 aperture. The spire is elevated in a small degree. 

 Peristome not thickened. 



Diameter a quarter of an inch. 



The young conchologist will perhaps confound this 

 species with the Zonites nitidulus, Z. cellarius, or Z. 

 alliarius. It is, however, more convex, darker in colour, 

 and does not possess that marked feature, the white- 

 ness around the umbilicus. 



The animal is dark in colour. 



Found under stones, in damp and shady situations. 



Although not a ccmmon species generally, it is toler- 



