32 
AUSTRALASIAN ANTARCTIC EXPEDITION. 
This is an instance of the wide distribution of animals living at great depths 
for it has been recorded from the Antarctic to the coast of J apan. 
It has been met with by the “ Challenger ” at the following places :—Between 
Trince Edward Isi nd and Kerguelen, at a depth of 1,600 fathoms. Midway between 
Australia and the Antarctic, at 1,950 fathoms. Also in the North Pacific (lat. 35° 41' 
N., long. 157° 42' E.) at 2,300 fathoms, and (lat. 35 ° 22' N., long. 169° 63' E.) at a depth 
of 2,900 fathoms. While Moore records the variety from the coast of Japan at 3,774 
fathoms. 
Sub-family PoLYNOixm. 
Genus Enipo Malmgren. 
Enipo rhombigera Elders. 
Elders (1908), p. 47, pi. IV, figs. 1-12. 
Elders (1912), p. 13. 
Ehlers (1913), p. 449. 
Gravier (1911), p. 81. 
Of this very distinctly' patterned species, which is confined to the Antarctic 
region, as many as forty-two specimens were gathered by the “ Aurora ” from eight 
stations and from one unnamed locality. 
The plan of colouration is sufficiently described and illustrated by coloured 
figures by Ehlers, and some other variations of pattern are mentioned by Gravier. 
I have oidy to add that in one specimen, which measured 100 mm., the dorsum is very 
darkly coloured. The violet median band, with its rhomboidal outgrowths, is nearly 
continuous on the elytriferous segments ; with a streak of dark brown along the hinder 
half of the segment; while in the cirriferous segments, where the median band is 
not produced outwards, there are two parallel cross-bars of brown, extending inwards 
from the cirrophore, one in front, the other behind it, nearly meeting the median 
pigmented band. 
The greatest length of any of my specimens is 100 mm., though others have 
been previously described that exceed this. 
The figure of the head given by Ehlers is not quite satisfactory, since the median 
tentaculophore is so drawn as to suggest that it bore the tentacle (which is missing, 
as it usually is) on its upper surface, which would be a very unusual position in the 
family. As a matter of fact, however, it is the fault of the artist, for I find that the 
tentacle is inserted at the anterior extremity of the tentaculophore as usual. 
Localities 
Commonwealth Bay, Station D, 45-50 fathoms (two). 
Station E, 55-60 fathoms (four). 
Station 1, 350-400 fathoms (nine). 
