CONTENTS. 



Introductory Note, . 

 The Genus Scaphites . 



Scaphites warreni, . 

 Prionotropis woolgari, . 

 The Genus Ostrea, . 



Ostrea beloiti, 

 Fasciolaria, 

 Fusus, 



Astrocaenia conica, 

 Pseudo-perna wilsoni, . 



Page. 

 205 

 207 

 210 

 211 

 213 

 214 

 214 

 215 

 215 

 215 



ILLUSTRATIONS. 



Opposite 



Plate. page. 



XXII 209 



XXIII 210 



XXIV . . . . . 211 



XXV 214 



XXVI. 215 



