73 



aperture oval, a little sinuous at the upper and 

 inner angle, with two plaits, one near the top of 

 the pillar lip, and the other not quite half way 

 down, both of them approaching each other as 

 they recede inwardly : the margin white and de- 

 tached all round. 



In woods and close hedges. 



'[56. Clausilia hidens. Shell very slightly striate, 

 the suture crenate with white papillary dots : 

 aperture with two plaits, and the margin detached 

 all round. 



Turbo bidens. Linn. Syst. p. 1240. 



Linn. Trans, vui. p. 178. t. 5.f. S. 



Puh. Dors. ^. 46. ?. 21./. IG. 



Clausilia papillaris. Drap. p. 71. t. 4,f. 13. 



Shell half an inch long, pale brown, finely striate 

 obliquely, tumid in the middle : volutions nine or 

 ten, the five or six smaller ones suddenly decreasing 

 in size, and all marked by small white tubercles 

 on a brown line which winds round the sutures, 

 giving the line of junction a crenate appearance : 

 aperture broad oval, with the margin rather thin, 

 and detached all round ; the outer lip with two 

 rather remote laminae, and often a small tubercle 

 between them. 



