BY DR. R. VON LENDENFELD. 227 



SCHEMA. . 



Ovum 



I 

 Medusa 



I 

 Polyp 



- I 



Hydrorhiza 



I 

 First Polyp 



I 

 Ovum. 



or : 

 Ovum 

 Medusa Ovum 



Medusa 

 Polyp 



rr I 



Hydrorhiza 



First Polyp 



I 

 Ovum. 



or : 

 Ovum 

 Polyp Medusa 



V 



Hydroriza 



First Polyp 



_ I 

 Ovum. 



