286 HELICID^E. 



not wanting. Var. 2. Box Wood, near Bath (Clark) ; 

 Darnwood, Kent (Stephens) ; Clevedon, Somersetshire, 

 and Watlington, Oxfordshire (Norman) ; Surrey 

 (Choules) ; Newmarket (Wright). This last variety has 

 also been noticed by Malm as occurring in Sweden. C. 

 laminata has been found in the upper tertiary strata at 

 Copford. Its extra-British range extends from Finland 

 to Italy, and (according to Roth) it inhabits Smyrna. 



This pretty land-shell is by no means common, al- 

 though it seems to be gregarious in some places. Bou- 

 chard-Chantereaux says that -its eggs are enormous in 

 comparison with the size of the animal, being wider than 

 the mouth of the shell, and that their number seldom 

 exceeds from 10 to 12. They are laid in August and 

 September ; and the young are excluded on the twen- 

 tieth day, but do not become adult until the end of their 

 second year's growth. According to DesMoulins, these 

 snails regularly leave their lurking-places at nightfall 

 and climb the trees in search of food, descending at sun- 

 rise. In wet weather, however, they may be found 

 crawling freely on the trunks of trees in the daytime. 



This is the Helix bidens of Miiller (but not of Linne) 

 and the Clausilia bidens of Draparnaud, Nilsson, and 

 other writers, as well as the C. derugata of Fe*russac. 



C. labiata was introduced by Da Costa and Montagu 

 into the British fauna on the authority of Mr. Swain- 

 son ; but both of the localities mentioned by the latter 

 (viz. "an osier-ground in Battersea fields" and "Hyde 

 Park near the banks of the Serpentine ") are more ap- 

 plicable to C. biplicata than to the species in question, 

 which inhabits dry situations. It is a native of the 

 extreme South of Europe. 



The C. solida of Draparnaud, which has been referred 

 by Fe"russac and all subsequent writers to C. lahiata, is 





