228 THE AUSTRALIAN HYDROMEDUSyE, 



I. SUB-FAMILY. CODONIN^. 

 CODONLILE. Haeckel. 



Mouth simple, with flaps or barbels. Gonade simple tube 

 shaped, not divided radially, with four simple Radial Canals and 

 unbranched tentacles. Alimentary Zooids, with tentacles, which 

 are scattered, or in two verticils. 



Codonium. Haeckel. 



Sarsia. Lesson. 



Syndictyon. A. Agassiz. 



Ectopleura. L. Agassiz. 



Dipurena. MacCrady. 



Bathycodon. Haeckel. 



Dicodonium. Haeckel. 



Dinema Van. Beneden. 



Steenstrupia. Forbes. 



Euphysa. Forbes. 



Hybocodon. L. Agassiz. 



Ampbicodon. Haeckel. 



Amalthaea. O. Schmidt. 



Globiceps. Ayres. 



Gymnocoxyne. Hincks ? 



Vorticlava. Alder. 



Acharadria Strethill. Wright. 



Dendroclava. Weismann. 



II. SUB-FAMILY. TIARIN^E. 

 TIARID^E. Haeckel- 

 Anthomedusidse with four broad Moutharms, with four or four 

 pair of gonads, four simple Radial Canals and unbranched tentacles. 

 The alimentary Zooids of the Polypecolonies with scattered 

 capitate tentacles. 



Protiara. Haeckel. 

 Moderia. Forbes. 

 Corynites. McCrady. 

 Amphinema. Haeckel. 

 Codonorchis, Haeckel. 



