302 E. A. BRIGGS. 
NOTES ON TASMANIAN HYDROZOA. 
By H. A. BRIGGS, B.Sc., 
Zoologist, Australian Museum, Sydney. 
(Communicated by C. Hepuzy, F.L.s., with the authority of the 
Trustees of the Australian Museum.) 
With Plates X - XI. 
[Read before the Royal Society of N. S. Wales, November 4, 1914.] 
I. Introduction. 
During a recent Kaster encampment of the Tasmanian 
Kield Naturalists’ Club, several successful hauls of the 
dredge were made in the neighbourhood of Freycinet Pen- 
insula, on the eastern coast of Tasmania. By permission 
of the Trustees of the Australian Museum I was enabled to 
accompany the party officially, and I obtained a large 
collection which includes numerous representatives of 
several invertebrate groups. In company with Professor 
T. T. Flynn, another day was spent collecting in the 
D’Entrecasteaux Channel where additional material was 
secured. 
Owing to the generosity of the authorities of the Tas- 
manian Museum, I have also been enabled to examine the 
Tydroid collection under their charge which includes a 
considerable number of local species. 
The Hydroids dealt with in the present paper were col- 
lected at four definite areas—within Thouin or Wineglass 
Bay, Freycinet Peninsula, 11 fathoms; off Thouin Bay, 80 
fathoms; Storm Bay; and D’Entrecasteaux Channel, 2 to 
11 fathoms. The following notes refer to the family 
Plumularidce, which is represented by fourteen species, 
