232 THE AUSTRALIAN HYDROMEDUSCE, 



II. SUB-FAMILY. CANNOTIN,E. 

 AKNOTIDiE. Haeckel. 

 Leptonieduspe, without marginal vesicles, with branched Radial 



Canals. 



Staurodiscus. Haeckel. 



G-aninerna. A. Agassiz. 

 Ptychogena. A. Agassiz. 

 IStauropkora. Brandt. 

 Polyorchis. A. Agassiz. 

 Cannota. Haeckel. 

 Discannota. Haeckel. 

 Berenice. Peron et Leseur. 

 Dipleurosoma. A. Boeck. 

 Dicronocanna. Haeckel. 

 Toxorchis. Haeckel. 

 Veletta. Haeckel. 

 Willia. Forbes. 

 Proboscidactyla. Brandt. 

 Cladocanna. Haeckel. 



III. SUB-FAMILY. EUCOPIX.E. 

 EUCOPID^E. Gegenbaur. 

 Leptomedusse, with marginal vesicles and four simple unbranched 



radial canals. 



Eucopium. Haeckel. 

 Saphenella. Haeckel. 

 Eucope. Gegenbaur. 

 Obelia. Peron et Leseur. 

 Tiaropsis. L. Agassiz. 

 Euchilota. McCrady. 

 Phialium. Haeckel. 

 Pbialis. Haeckel. 

 Mitrocomium. Haeckel. 

 Epeuthesis. McCrady. 

 Mitrocomella. Haeckel. 

 Phialidium. Lemkart. 





