AUSTRALIAN HYDROMEDUSJE. 



10 



20 Sertularella polyzonias. Gray. (9) 104, (G3) 205, (93) 417. 

 Cotulina, polyzonias (2) 35G. 



Great tooth Coralline (35) 5. 



Serlularia Ellisii (82) 142. 



Sertularia ericoides (113) 127. 



Sertularia Jlexuosa (45). 



Serlularia Hilernica (67) 128. 



Sertularia pinnata. Templeton. 



Sertularia polyzonias (38) T. VT. figs 1-6, (67) 61, (82) 142, (83) 190 



Sertularia simplex (25), (64). 



South coast of Australia (Port Phillip). 

 New Zealand. 



21. Sertularella indivisa. Bale. (8) 24, (9) 105, (93) 417. 

 South Coast of Australia : (Victoria and South Australia.) 



22. Sertularella solidula. Bale. (8) 24, (9) 106, (93) 417. 

 South coast of Australia (Port Phillip). 



23. Sertularella macrotheca. Bale. (8) 25, (9) 107, (93) 417. 

 South coast of Australia (Western Port in. Victoria). 



24. Sertularella lajvis. Bale. (8) 24, (9) 107, (93) 417. 

 South coast of Australia (Port Phillip). 



25. Sertularella pygmsea. Bale. (8) 25, (9) 108, (93) 417. 



South coast of Australia (Victoria and South Australia) New Zealand. 



26. Sertularella Johnstoni. Allman. (5) (9) 109, (93), 418. 



Sertularia Johnstoni (25), (46), (64). 



South coast of Australia (Victoria and South Australia), Tasmania, New 

 Zealand. 



27. Sertularella divaricata. Busk. (9) 110, (18), 388, (93) 418. 



East coast of Australia (Port Stephens). South coast of Australia (Bass' 

 Straits). 



28. Sertularella neglecta. Thompson. (9) 110, (93) 418, (127) 100. 

 South coast of Australia (Victoria, South Australia). 



29. Sertularella ramosa. Thompson.* (9) 111, (93) 418, (127; 102. 

 South coast of Australia (Bass' Straits). 



10. Genus DIPHASIA. Agassiz. 



The trophosomes possess an internal operculum. Polypostyles different in 

 the two sexes. The female gonophores with marsupium. 



* Thompson is not sure whether this species described liy him conies from Bass' Straits 

 (127) 102. 



B 



