A M ONOGRAPH 



01 



THE EOCENE MOLLUSCA, 



OR, 



DESCRIPTIONS OF SHELLS 



I' ROM 



THE OLDER TERTIARIES OF ENGLAND. 



BY 



SEARLES V. WOOD, F.G.S. 



PART I. 



BIVALVES- 



LONDON 



PRINTED FOR THE PAL^ONTOGRAPHICAL SOCIETY. 



1861. 



