CONTENTS 



CHAPTER I 



PA(iH 



PROTOZOA i 



CHAPTER II 

 METAZOA INTRODUCTORY REMARKS : COELENTERATA . . 84 



CHAPTER III 



PORIFERA ... . . Il8 



CHAPTER IV 



ANNELIDA . . . . . . .129 



CHAPTER V 

 THE PARASITIC WORMS . . 159 



CHAPTER VI 

 ARTHROPODA ... . . 209 



CHAPTER VII 



MOLLUSCA . . . . . . .267 



ix 



