NOTES ON TASMANIAN HYDROZOA. 317 
in opposite pairs, both series in one plane and all facing the 
same direction. Hach branch commences with several 
internodes carrying median sarcothece only. 
Gonosome.—Corbule (female) are present on several of 
the colonies, and agree in structure with those described 
by Bale. 
Dimensions.— 
Hydroclade-bearing internode, length ... 0°42—0°43 mm. 
Hydroclade-bearing internode, diameter... 0°40 —0°42 
99 
Hydroclade internode, length $08 et OraO — Ora ates 
Hydroclade internode, diameter ... soe MUI Us 
Hydrotheca, depth ... fa 14. ... 0°36—0°38_ ,, 
Hydrotheca, breadth at mouth ... . O21-0°22 ,, 
Corbula, length ia: “ae sac oo stl) GO; 1275, 4 45 
Corbula, diameter ... ae ted a 2 
99 
Locality.— Off Thouin or Wineglass Bay, Freycinet Pen- 
insula, Tasmania, 80 fathoms. 
Disiribution.—Previously recorded from Oyster Bay, 
Tasmania, 20 fathoms (Bale); Seven miles east of Cape 
Pillar, Tasmania, 100 fathoms (Briggs). 
AGLAOPHENIA TENUISSIMA, Bale. 
(Plate XI, fig. 2.) 
Aglaophenia tenuissima, Bale, Biological Results “ Endeavour,” 11, 
AP UStAS yp. 179, pl. xxxvii; figs. 1,2: 
Several colonies, the largest 335 mm. in height, represent 
this extremely slender and flexuous species recently 
described by Bale from the Great Australian Bight. The 
gonosome was not observed. The specimens, however, 
agree in detail with the type, for the colonies are very light 
brown in colour, exhibit a slender habit, and have poly- 
Siphonic stems, 2 mm. in diameter at the base. From the 
flexures oi the stem arise small and delicate alternate 
monosiphonic branches, the proximal portions of which 
