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 Japan. 



It has been met with by the " Challenger " at the following places : Between 

 Trince Edward IsL 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 fathorr.s, and (lat. 35 22' N., long. 169 63' E.) at a depth 

 of 2,900 fathoms. While Mooie records the variety from the coast of Japan at 3,774 

 fathoms. 



Sub-family POLYNOIN^. 



Genus ENIPO Holmgren. 

 ENIPO RHOMBIGERA E filers. 

 Ehlers (1908), p. 47, pi. IV, figs. 1-12. 

 Ehlers (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 Gravie;-. 

 I have only 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 

 pigment ed 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). 



