4/8 ADDENDUM TO THE AUSTRALIAN IIYDROMEDUSiE, 



I. SUB-ORDO. HYDROPOLYPIN^ 



5. FAMILIA. BLASTOPOLYPIN.^. 



IV. SUB-FAMILIA. SERTULARIN.E. 



9. GENUS. SERTULAKELLA. 



20. SPECIES. SERTULARELLA POLYZONIAS. Gray (1) 543. 



Recoi'ded as Sei'tularella simplex Hutton from Mount Dromedary, 

 East Coast of Australia, by KircheniDauer. 



26. SPECIES. SERTULARELLA JOHNSTONI. Allman (1) 534. 

 Recorded as Sertularella Johnstoni Gray from the Richmond 

 River Heads, East Coast of Australia by Kirclienpauer. 



29a. SPECIES. SERTULARELLA MUELLERI. Kirclienpauer (2) 49. 



A new tricuspidate species from the Chatham Islands to be 

 added to the Australian species. 



29b. SPECIES. SERTULARELLA PURPUREA. Kirchenpauer (2) 49. 

 A new tricuspidate species from the Chatham Islands to be 

 added to the Australian species. 



29c. SPECIES. SERTULARELLA SUBDICHOTOMA. Kirchenpauer 

 (2) 46. 



A new tricuspidate species from Bass' Straits, which also occurs 

 in the Straits of Magellan, to be added to the Australian species. 



29d. SPECIES. SERTULARELLA INFRACTA. Kirchenpauer (2) 46. 

 A new tricuspidate species from Bass' Straits, Hobson's Bay and 

 Richmond River Heads, to be added to the Australian species. 



29e. SPECIES. SERTULARELLA RETICULATA. Kirchenpauer (2) 4o. 



A new quadricuspidate species from Bass' Straits to be added to 

 the Australian species. 



