NOTES ON TASMANIAN HYDROZOA. 315 
AGLAOPHENIA DECUMBENS, Bale. 
Aglaophenia decumbens, Bale, Biological Results ‘‘ Endeavour,” 11, 
1, 1914, p. 48, pl. iv, fig. 4, pl. vi, fig. 6; sd. Briggs, Rec. 
Austr. Mus., x, 10, 1914, p. 300. 
Bale instituted this species for a single specimen from 
Bass Strait, at the same time pointing out that “‘there is 
some doubt as to whether this species is identical with the 
A. brevicaulis, Kirchenpauer.”’ 
The largest colony is 84 mm. in height, and the minute 
characters of the hydrothecee agree closely with Bale’s 
diagnosis, except that the median anterior teeth of the 
hydrothece are without the characteristic outward bend. 
Dimensions.— 
Hydroclade-bearing internode, length ... 0°42—0°45 mm. 
Hydroclade-bearing internode, diameter... 0°19—O°21 ,, 
Hydroclade internode, length 4 .. 0'435—0°45 ,, 
Hydroclade internode, diameter ... ... O'O8—O0°10 ,, 
Hydrotheca, depth ... oe Pe tO ad OOS by. 
Hydrotheca, breadth at mouth ... ae Ol SOL 47, 
Locality.— Off Thouin or Wineglass Bay, Freycinet Pen- 
insula, Tasmania, 80 fathoms. 
Distribution.— Previously recorded from Bass Strait (Bale); 
Seven miles east of Cape Pillar, Tasmania, 100 fathoms 
(Briggs). 
AGLAOPHENIA DIVARICATA (Busk). 
Plumularia divaricata, Busk, Voy. ‘‘ Rattlesnake,” 1, 1852, p. 398. 
Piumularia ramosa, Busk, op. cit., p. 398. 
Aglaophenia ramosa, Kirchenpauer, Abh. Nat. Ver. Hamburg, 
¥, 8372, p. 38) pls, 1, uw, fist 7; 
Aglaophenia McCoyi, Bale, Journ. Micro. Soc. Vict., 1, 1882, 
p. 36, pl. xiv, fig. 2. 
Lytocarpus ramosus, Allman, Journ. Linn. Soc., Zool., x1x, 1886, 
p. 154, pl. xxv, figs. 1 — 3. 
