Sy 
rotaw - ; 
WS Im 
1348 
Vy 2 A MONOGRAPH 
M 0 \ 1 . 
OF THE 
CRAG MOLLUSCA, 
WITH 
DESCRIPTION OF SHELLS 
FROM THE 
UPPER TERTIARIES OF THE BRITISH ISLES. 
By | KA LZ3Sq 
SEARLES V. WOOD, F.G:S. 
VOL, If. 
BIVALVES. 
LONDON: 
PRINTED FOR THE PALHONTOGRAPHICAL SOCIETY. 
1851—1861. 
