C LAVS I LI A. 177 



and Ireland, but it is local. In Scotland it has been 

 found sparingly near Perth by Dr. Buchanan White. 



These snails, as well as the two preceding species, 

 do not usually leave their hiding-places till sunset, 

 when they ascend trees to feed during the night, 

 returning at daybreak to the ground in quest of 

 shelter ; but after rain, or in very dull weather, C. 

 laminaia may frequently be seen in the daytime on 

 the trunks of beech and other trees. 



The eggs of this species, which are very large, and 

 from ten to twelve in number, are laid in August and 

 September. The young attain maturity at the end of 

 the second year. 



Var. I. pellucida. — Shell thinner, more transparent, and very- 

 glossy. Penrice, Glamorganshire (J. G. J.), B.C. 



Var. 2. albida. — Shell greenish-white. Box Wood, near Bath 

 (Clark), Darnwood, Kent (Stephens), Clevedon, Somersetshire, 

 and Watlington, Oxfordshire (Norman), Surrey (Choules), New- 

 market (Wright), B.C. Cooper's Hill, near Cheltenham (E. 

 Simpson), J.C. 



C. PARVULA, StUDER. 



The author of ' British Conchology ' (vol. i. pp. 

 280-1) makes the following remarks respecting this 

 species : " C. parviila differs from the present species 

 (C. rugosa) in being smaller and quite smooth, with 

 the exception of some veiy faint transverse lines, 

 which are only observable with a lens, or of a few 

 striae near the mouth. It inhabits the north of France, 

 as well as every other part of the Continent, and may 

 be expected also to be found in Great Britain." 



This prediction seems to have been fulfilled, for 

 in the Supplement to the same work (vol. v. p. l6i) 



N 



