We are deficient of: — 



Cladsilia LAMIN4TA [the Clausilia bidens of Dra- 

 paruaud, Fleming, Grey, Brown, Lamark, &c.]. Chiefly 

 a southern shell, although found in Northumberland. 



Clausilia plicatula. A southern shell. 



Clausilia biplicata [the Clausilia Rolphii of Grey, 

 Turton, and Brown]. A southern species. 



ZUA. 



A pretty, shining, very smooth, spiral, land shell 

 Aperture ovate, and peristome thickened. 

 The animal ver} similar to that of the Helix. 

 Only one species belongs to Great Britain. 



ZuA LUBRiCA [The Common Varnished Shell]. Midler. 

 Figure 81. 



Discovered by Dr. Lister, in the year 1678. 



This pretty and very common British land shell is 

 spiral, polished, very smooth, nearly transparent, and 

 brov?nish-horn coloured; cylindrical-oblong in form, 

 apex sunk and blunt, and small aperture, which is Ian- 

 ciolate-ovate in form. No umbilicus. There are six 

 convolutions. Length, nearly a quarter of an inch. 



The colour of the animal is a brilliant lead-blue. 



Found under stones and fallen leaves, and amongst 

 moss on lawns and in woods. 

 l3 



