218 
by favor of the Rev. H. Steinhauer; they resemble some 
sent me by Thomas Meade, Esq. from the Cornbrash stratum 
near Chatley, of which they are said to be characteristic; 
they are mostly rounder, but with the same kind of points* 
The Rev. T. O. Marsh has sent me specimens from Fel~ 
mersham, one of which I have given two views at fig. 4 
and 5. These are more gibbous than those from Bradford* 
but less so than the Chatley ones, some of which are almost 
globose* 
