AURICULA ventricosa. 
TAB* CCCCLXV.— t. 
Spec. Char. Subovate, inflated, transversely 
striated ; spire short pointed, base notched ; 
three sharp plaits upon the columella ; left 
lip callous, a thick border upon the right 
up. 
TT his is the largest of several species of shells, resem- 
bling Auricula ringens of Lamarck, all of which are 
fossil ; it is distinguished from A. ringens by its smooth 
outer lip, 'and from A. turgida, M. C. t. 163, by its callus 
upon the inner lip, and a third plait;. the length does 
not exceed the breadth. 
Forwarded from the Crag near Ipswich, by our kind 
correspondent Mrs. Cobbold ; it appears to be a very 
rare shell, the Rev. G. R. Leathes having found only 
one individual ; there is a species found at Bordeaux, 
resembling this in every tiling but size ; it is but little 
larger than the ringens. 
