480 ADDENDUM TO THE AUSTRALIAN IIYDROMEDUSiE. 



II. SUB-OEDO. HYDROMEDUSIN^. 



12. FAMILIA. CAMPANULINID^. 

 II. SUB-FAMILIA. SERTULARIN.E. 

 61. GENUS. P0LYSERIA8. Merejkowsky. (*) 

 SertularinfB, the Hydranths, of whicli are disposed in more than 

 two series along the stem, (Selaginopsis. Kirchenpauer (2) 7). 



ISO. POLYSEEIAS MIRABILIS. Merejkowsky. 

 P0LY8ERIAS HINCKSJI. Merejkowsky. 

 DYPHOSIA MIRABILIS. Verill. 

 SELAGINOPSIS MIRABILIS. Kirchenpauer. 

 This widely distributed species has been obtained by Verill, 

 from the coast of New England, and has accordingly to be added 

 to the Australian species. 



62. GENUS. SERTULARIA. 

 222. SPECIES. SERTULARIA ELONGATA. Lamouroux. 



Kii'chenpauer (1) 534 mentions this species under the name of 

 Sertularia lycopodium, de Lamarck, as occurring at the Richmond 

 River Heads and near Mount Dromedary. 



224a. SPECIES. SERTULARIA MILLEFOLIUM. De Lamarck. 



This species was obtained by Kirchenpauer (1) 534 from the 

 East coast of Australia, near Mount Dromedary, and has 

 accordingly to be added to the Australian species. 



In all one Genus and 13 Species have been added to the 

 ])reviously described Australian ones. 



I think it not unlikely that one or the other of Kirchenpauer's 

 new species may be identical with some described recently by W. 

 Bale in the " catalogue of the Australian Hydroid Zoophytes." 



I think it, howevei', better to leave it to Dr. Kirchenpauer and 

 Mr. Bale to find this out themselves, as they, being in possession 

 of the types, are much better able to judge than anyone else. 



The total number of Australian Genera is herewith increased to 

 74, and that of the species to 254. 



(*) Annals and Magazine of Natural History. 1S77, September. 



