66 
AUSTRALASIAN ANTARCTIC EXPEDITION. 
axis slightly oblique to a transverse line; they face upwards and backwards. The 
anterior pair, of which only the upper half is visible from above in this specimen, faces 
forwards and outwards. The posterior pair is close to the hinder margin, the anterior 
separated from them by about the diameter of an eye. 
The tentacles are about half the length of the prostomium in one case ; nearly 
equal to it in the less well preserved specimen. The palps are broad and short, with a 
nearly spherical appendage, and do not reach further forwards than the tips of the 
tentacles, or only slightly further. 
Of the peristomial cirri, the longest, i.e., the anterior dorsal, reaches back to the 
7th or 9th segment, and is from 8 to 10 mm. in length; the next, antero-ventral, is about 
half this length, and the other two are successively shorter, the shortest being of the 
same length as the prostomium plus its tentacles. 
The peristomium is rather longer than the first chsetigerous segment and about 
equal to the second; it has a straight anterior margin. 
The parapods are relatively short: and present a peculiarity that I do not 
remember seeing noted in other species. The posterior lip of the neuropod is produced 
outwards into an ovate process, very distinctly constricted at its base, and though 
normally directed outwards, is sometimes displaced backwards. It occupies the position 
of one of the folia ceous outgrowths characteristic of the Heteronereid stage of some 
species (fig. 69). 
In the anterior feet, up to about the 22nd, the upper ligule is bluntly pointed, 
no longer than the dorsal lip or “ middle ligule.” The lip of the ventral lobe is bluntly 
rounded and carries, as I have mentioned, the curious appendage on its posterior face. 
The ventral ligule is rounded and shorter and broader than the ventral lip. and this 
seems to be a specific character (fig. 70). 
Posteriorly, at or about the 34th foot (fig. 71), the upper ligule becomes rather 
more pointed, as does also the middle ligule; the ventral bgule remains broadly rounded, 
and is even larger than anteriorly. 
In the still more posterior feet (fig. 72) this ventral bgule is still more noticeable 
as a large rounded lobe, larger than any of the other lobes. 
The chaetse are arranged as follow in the anterior feet:—- 
Dorsal bundle.—About 12-15 spinigerous homogomphs, with long slender appendix. 
Ventral bundle. —(a) Supra-acicular group : 6-8 spinigerous homogomphs, as 
above, together with 3-4 stout-shafted, brown, falcigerous heterogomphs with 
a shorter appendix.* (b) Sub-acicular group ; A few spiniger homogomphs and 
16-18 heterogomph falcigers with slender colourles shaft. 
The appendix is short only as compared with that of the homogomphs ; it is longer than the usual short falciger. 
