[Proc. Roy. Soo. Victoria, 26 (N.S.). Tt. I., 1918.] 



Akt. X. — Fuvtiier Notes on AvMralktn Hydroids. — //. 

 By W. M. bale, F.R.M.S. 



(With Plates XII, Xlir.) 

 [Read lOth July, 1913.] 



The present paper is in oontinnation of my last connnunication to 

 the Society, which was read in April, 1893. During the somewhat 

 long interval but little has been done in Australia towards advanc- 

 ing our knowledge of its hydroid fauna, the only contributions 

 which I am aware of being those of Messrs. Bartlett, Mulder, and 

 Trebilcock, in the " Geelong Naturalist." A number of new and 

 interesting forms were made known in these papers, mostly among 

 the smaller species, and pi-incipally from collections made in or 

 near Port Phillip; and since this is the case witli a locality which 

 has perhaps been better searched than any othei' in the States, it 

 may readily be imagined what a wealth of information remains to 

 be gathered by futuie investigators along our less-explored shores. 



A quantity of liydroid material which Avas dredged by the 

 " Thetis " in 1898 was sent to Mr. Jas. Uitihic.-^.f the Royal Scottish 

 Museum, Edinburgh, and the results were published by the Aus- 

 tralian Museum in one of its Memoirs nearly two years since. In 

 this paper a number of new forms are desci-il)ed. and a good deal 

 is added to our knowledge of already-known species. 



A number of hydroids dredged from time to time by the Com- 

 monwealth trawler " Endeavour " have been ])laced in my liands 

 for examination, among them being some new and striking f(n-ms 

 obtained from the little-explored region of the Great Australian. 

 Bight. These form the subject of a Report, which was completed 

 some months since, and which it is expected will shortly be published. 

 A small lot of material since received contains several additional 

 forms new to our fauna, which I hope to report upon at a future 

 date. 



Though no other works have a})peared s])eiially devoted to the 

 Australian Hydroida, many of our species have been described in 

 accounts of collections made in otliei' ])arts of the world during 

 recent years, and the nuirdu'i- of foims known to be common to 

 Australia and other rei^ioiis has l)eon e(nisideiably augmented, while 

 numerous changes in nomenclature have found more or less accept- 



