910 ADDENDA TO THE AUSTRALIAN HYDROMEDUSjE, 



11. FAMILY. LEPTOMEDUSID^. 



46a (74). GENUS. OCTORHOPALON. 

 197a (240). O. FERTILIS. Nov. Spec. 

 I obtained this interesting representative of a new Genus in 

 Port Jackson. 



49. GENUS. EUCOPE. 



201a (239). E. HYALINA. Nov. Spec. 

 A large new Species obtained in Port Jackson. 

 50. GENUS. OBELIA. 

 203. OBELIA AUSTRALIS. Von Lendenfeld. 

 I obtained the hitherto unknown adult stage of this Medusa in 

 Port Jackson. 



12. FAMILY. CAMPANULINIDyE. 



59a (75). GENUS. OAMPANULINA. 

 214a (240). CALICULATA. Von Lendenfeld. 

 I have received specimens of Campanularia caliculata, Hincks, 

 from Port Phillip, Victoria ; and Lyttleton, New Zealand. I 

 find, that this Species is not a Campanularia but a Campanulina. 



The Species which are added to the Australian Fauna in this 

 paper, bring the total number of Australian Hydromedusse up to 

 240, which are distributed amongst 74 Genera. 



I. SUBOEDO HYDROPOLYPIN^E. 



Von Lendenfeld. 



5. FAMILY. BLASTOPOLYPIDA. Von Lendenfeld. 

 III. SUB-FAMILY. CAMPANULARIN^E. 

 4a (70). GENUS. MONOSKLERA (1). Nov. Gen. 

 Campanularinre, with erect unbranched stems, which bear alter- 

 nate Trophosomes on the distal ends of each Internode on short 

 annulated stalks. Internodes wedge-shaped, with a cylindrical 

 tube along one side. Gonophor, unknown. 



(1.) From fiovo one, one-sided ; and oKXrjpa thick skin. 



