CONTENTS. 
Introductory Note, 
The Genus Scaphites 
Scaphites warreni, . 
Prionotropis woolgari, . 
The Genus Ostrea, 
Ostrea beloiti, 
Fasciolaria, 
Fusus, 
Astroccenia conica, 
Pseudo-perna wilsoni, 
ILLUSTRATIONS. 
PLATE. 
XXII. 
XXIII. 
XXIV. 
XXV. 
XXVI. 
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Opposite 
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