NOTES ON TASMANIAN HYDROZOA. 307 
Dimensions. — 
Gonosome, length... ee ae Ae up to 1°6 mm. 
Gonosome, maximum diameter... .. 0°70 — 0°71 
99 
Locality.— Off Thouin or Wineglass Bay, Freycinet Pen- 
insula, Tasmania, 80 fathoms. 
Distribution.—Previously recorded from Mers australes — 
(Lamarck); Broughton Island, New South Wales, 25 fathoms 
(Bale); Station 48, off Wollongong, New South Wales, 55 — 
56 fathoms (Ritchie); Bass Strait, 40 fathoms; Fifty miles 
south of Cape Wiles, South Australia, 75 fathoms (Bale). 
Genus NEMERTESIA, Lamouroux. 
NEMERTESIA CILIATA, Bale. 
(Plate X, fig. 3.) 
Nemertesia ciliata, Bale, Biological Results “Endeavour,” Il, 4, 
Paez p. 170; pl. xxxvi, fig. |. 
There isa considerable amount of variation in the details 
of the structure of this species recently described by Bale 
from Oyster Bay, Tasmania. A single robust colony 213 
mm. in height, was dredged in the neighbourhood of the 
type locality. The stem and main branches are polysi- 
phonic and give off numerous small monosiphonic branchlets. 
These, as in Bale’s specimens, are divided into internodes 
which support from one up to six or eight whorls of hydro- 
cladia. Hach whorl! usually consists of three hydrocladia: 
in a few instances four were observed. There was no trace 
of gonosome. The colour of the colony is very dark brown. 
A specimen (locality unknown) in the Tasmanian Museum 
is similar to the type, being light brown in colour. 
Dimensions.— 
Hydroclade internode, hydrothecate, length 0°26 —0°29 mm. 
Hydroclade internode, intermediate, length 0°15 — 0°17 
Hydroclade internode, diameter ... oo. 0 0a —0:06 
Hydrotheca, depth .. iD 3 Oe 0°05 
Hydrotheca, disinoter at sight ..- 0°05- 0°06 
