AUSTRALIAN HYDROMEDUS.E. 47 



69. Genus CRYPTOHELIA. Milne Edwards. 



Pores in regular cyclo-systems. Styles absent. Gastrozooids without 

 tentacles ; gastrophores with two chambers ; summits of the cyclo-system 

 covered by a lid. 



237. Crytophelia pudica. Milne Edwards et Haime. (32) 93, (33) (95) 



616. 

 Northern limit (N"ew Guinea). 



IV. SUB-ORDO.-TRACHOMEDUSIXJE. 



V. Lendenfeld, 1884. 

 TRACHOMEDUSJE. Claus. 



Hydromeduste which are medusa 1 , and are propagated sexually without a 

 change of generation, and without forming polypoid zooids. Meduste, with 

 entodermal acustic clubs. 



XVIL- Familia TRACH03IEDUSIILE. 



V. Lendenfeld, 1884. 

 = TRACHOMEDUS^. Haeckel. 



Trachomedusinse with gonads on the radial side. (34) (50) (.31) (-37) (58) 

 (59). 



I._Sub-familia PETASIN^E. V. Lendenfeld, 1884. 

 With four radial canals and long tube-shaped stomach. 



II. Sub-familia TRACHINEMIN^. V. Lendenfeld, 188 I. 

 TRACHINEMID^E. Gegenbauer. 



With eight radial canals, with long tube-shaped stomach. 



III. Sub-familia AGLAURINJE. V. Lendenfeld, 1884. 

 = AGLAURIDJE. L. Agassiz. 



With eight radial canals and with a pedicle to the stomach. 



70. Genus STAUROGLAURA. Haeckel. 



Aglaurinpe with four gonads in connection with alternating radial canals, 

 the other four canals sterile. Gonads on the stalk of the stomach, not on tlu? 

 sub-umbrella. The four acustic clubs in. the interradii. 



238. Stauraglaura tetragonima. Haeckel. (50) 277, (95) 617. 

 Australia. 



