43 



o 



H. with a comprefled, fub-carinated fiiell, of a light- 

 brown colour, prettily rayed with chefnut: volutions fix, 

 not much raifed, but well defined by the feparating line, 

 and fi;rongly marked with clofe-fet, regular, longitudi- 

 nal firias, from the apex acrofs the volutions: aperture 

 lunated : umbilicus extremely large for the fize of the 

 fhell, the turn of the fpires vifible to the end. Diame- 

 ter a quarter of an inch. 



This fpecies is not uncommon in many parts o^ Eng- 

 land, on old walls, and dry banks ; and not unfrequent 

 in woods, or under ftones, or timber that has lain for 

 fome time. 



We have found it in many parts of mofi; the fouthern 

 counties. It is fubjeft to fome variety ; fome are of a 

 pale horn colour, with fcarce any vifible rays ; dead 

 fliclls become whitifii and opaque, with faint brown rays; 

 but in all ftates, it is eafily diftinguifhed by its comprefled 

 fhape, deep and large umbilicus, and regular, deep- 

 cut flriic. 



Not racliata of Gmelin, nor Jlriatula, which Do61or 

 PuLTEMEY has quotcd with doubt; but we fufpefl; the 

 rotundata. 



Animal light-cinereous ; tentacula four, fuperior ones 

 filiform, fub-clavate, furnifhed with eyes at their tips. 



K k k H. with 



