Vlll 



CONTENTS. 



PLATYHELMINTHES- 

 TURBELLARIA . 

 TEMNOCEPHALOIDEA . 

 TREMATODA 

 CESTOIDEA 

 NEMERTINI 



CCELENTERATA 



CTENOPHORA 

 ACTINOZOA 

 SCYPHOZOA 

 HYDROZOA 



PORIFERA- 



CALCAREA . 

 SILICEA 



PROTOZOA- 

 INFUSORIA. 

 MASTIGOPHORA . 

 RHIZOPODA 



