CONTENTS. 



Description of the Frontispiece ■•• Page v 



Introduction ' • ix 



Classification .... xiii 



I. Multivalves xiii 



II. Bivalves - xiii 



III. Uuivalves. — 1. With a regular spire xiv 



2. Witliout a regular spire xv 



I. MULTIVALVES. 



Chitou 1 



Lepas 5 



Pholas 11 



II. BIVALVES. 



Mya 15 



Soleii 19 



Tellina 23 



Cardium 29 



Mactra 33 



