﻿SUPPLEMENT 



TO THE 



MONOGRAPH OF THE CRAG MOLLUSCA, 



WITH 



DESCRIPTIONS OF SHELLS 



FEOM THE 



UPPER TERTIARIES OP THE EAST OF ENGLAND. 



BY 



SEARLES V. WOOD, F.G.S. 



VOL. III. 



UNIVALVES AND BIVALVES. 



WITH 



AN INTRODUCTORY OUTLINE OF THE GEOLOGY OF THE 

 SAME DISTRICT, AND MAP. 



BY 



S. V. WOOD, Jun., F.G.S., and F. W. HARMER, F.G.S. 



LONDON : 



PRINTED FOR THE PALiEONTOGRAPHICAL SOCIETY. 



1872—1874 



