CONTENTS 



CHAPTER I 



PAOE 



THE MOLLUSCA 1 



CHAPTER II 



THE AMPHIXEURA ...... 40 



CHAPTER III 



THE GASTROPODA ...... 66 



CHAPTER IV 



THE SCAPHOPODA . . . . . .197 



CHAPTER V 

 THE LAMELLIBRAXCHIA ..... 205 



CHAPTER VI 



THE CEPHALOPODA . . . . . .285 



INDEX 347 



