PLATE 46, 47, 48, 49, 
cuspidatus, showing the beak of the smaller, and the flat, 
perforated side of the larger valve. 
4, 5. The same in different positions. 
FIG. 6, 7 , 8. 
CONCHYLIOLITHUS Anomites ( subconicus ) longl- 
tudinaliter sulcatus sinu angulato, valva imperfo- 
rata semicirculari, altera semiconica ; nate recta 
apiciformi, foramine magna. S. p. 
Differs from the foregoing in the particulars already men- 
tioned; in the furrows, which are few in number, and 
acute ; in having a central, angular fold, instead of a 
rounded wave in the margin ; and in the beak of the conic 
valve, which is straight, or not recurved as in cuspidatus. 
Very rare. Limestone. Middleton. 
Fig. 6 , 7, 8, are different views of the same specimen. 
FIG. 9 , 10 . 
CONCHYLIOLITHUS Anomites (glaber) transver- 
sim ovalis laevis, natibus approximatis, margine sinu 
obtuso. S. p. 
Petrified shell. The original an Anomia. Perforate, with 
convex valves. Hinge straight, patulous, short. Foramen 
