71 



ZoNiTEs cRYSTALLiNus (The Crystalline Snail). 

 iMiiller. 



Figures 45 and 46. 



^6. 



This very pretty, minute, and delicate-looking crys- 

 talline shell is almost fiat, pellucid, polished, milky- 

 white in colour, smooth, blunt apex, and aperture 

 lunate. There are from five to six convolutions. The 

 peristome is not thickened, and the umbilicus, although 

 small, is deep. 



Diameter usually exceeds the eighth of an inch. 



Described by BIr. J. E. Grey, in the year 1821, in the 

 " Medical Repository." 



Inhabits damp situations, amongst moss and decayed 

 leaves, and under stones. 



It appears to be an active snail, and capable of en- 

 during colder weather than many of our Helices. 



In this neighbourhood it is found sparingly at High- 

 field House, Stanton- on the- Wolds, and Wollaton. 



Other localities are — Bristol (Miller), Wiltshire 

 (Montagu), Essex (Sheppard), Kendal (Gough), Thorn- 

 ley and Chaigeley, Lancashire (The Author), Newcas- 

 tle (Alder), Norwich (Bridgman), Grantham (The 

 Author). 



The Isle of Man (Forbes). Near Edinburgh 

 (Gerard). General in Ireland (Thompson). 



On the Continent, in France (Draparnaud), in Ger- 

 many (Pfeiffei), and in Sfveden (Nilson). 



