72 



with regular raised longitudinal lines : aperture 

 roundish-oval, sinuous at the upper and outer 

 angle ; the margin thick, white, detached all round, 

 with four or five plaits, two of which are much 

 longer than the rest. 



Of so rare a shell it is not easy to collect all the va- 

 rieties. Such as are above enumerated are in the 

 author's cabinet. In every respect they answer 

 to the accurate descriptions of Draparnaud and 

 Brard. 



Found by Mr. Rolph, in Charlton Wood, Kent, and 

 latterly in other woods of the same county. 



55. CLAUSILIA liplicata. Shell ventricose, opake 

 grey-brown, with regular raised striae: aperture 

 with two plaits, the margin detached all round. 



b. with a minute additional denticle or two. 



Clausilia biplicata. Leach, Mollusc, p. 120. 

 Clausilia ventricosa. Drap. p. 71. t. 4./. 14. 

 Turbo biplicatus. Mont. p. 361. t. II. f. 5. 



Shell nearly three quarters of an inch long, dark 

 grey, opake, regularly striate longitudinally : spire 

 consisting of eleven or twelve rather flat but well- 

 defined volutions ; the suture a depressed line : 



