POLY CHYETA—B ENH AM. 25 
The parapodia spring from near the anterior boundary of the segments, are short, 
and contain but few chsetse—about 6 in the anterior and 4 in the posterior feet. 
There are three kinds of chsetse (fig. 13)— (a) the uppermost simple capilliform, 
swollen at the end with a symmetrical but fine point (this is the “ acicnlum ” of McIntosh); 
(6) the uppermost gomphotrich, which differs from that found in E. heterosetosa, as will 
be described below ; and (c) some four or five smaller gomphotrichs. These have an 
enlarged end to the shaft and articulated deep down at one side is the short bidentate 
appendix. They are similar to those in E. heterosetosa, but have a more swollen cup. 
The lowest chsetse have this somewhat less enlarged than the upper ones, but the 
difference between them is not very marked. 
The uppermost gomphotrich is not “ spathulate” at its extremity. It consists 
of a slender shaft, which is much expanded at its extremity to form a large cup, which 
when seen from the side is quadrate. Three of its sides or edges are smooth, and in the 
re-entering angle between two of these the appendix is articulated, the fourth side 
forming the real free end of the shaft is finely but sharply denticulate, and its face is 
striated. The appendix is rather long, curved, and bidentate. 
When seen in the other plane—that is, from the front—-the swollen end of the 
shaft is oval, and the free tip of the appendix projects beyond. It has somewhat the 
appearance of Ehlers’s figure of the chseta of E. heterosetosa (1897, pi. Ill, fig. 65), if a 
line were drawn between the pointed tip and the oval portion ; but there are no con- - 
centric lines here in the present species. The previous authors, McIntosh, Elders, 
Gravier, have stated that this particular chseta is “ simple” and “ spathulate.” But 
in a recent paper Fauvel (1919, p. 356) states that it is really a gomphotrich, i.. that it 
bears a long and delicate appendix (“ arete”) which, being easily broken off, gives the 
appearance of being simple. But, even so, the form of the cli;eta in the worms before me 
differ so much from the figures that I cannot correlate the two, hence the new species. 
It differs from E. clavator Elders, in the absence of the chsetse with very long 
appendices that occur in the upper part of the bundle, as well as in other characters; 
and from E. turqueti Gravier, also in the form of the chsetse. 
The dorsal cirrus is ovate and shorter than the chsetigerous lobe ; the ventral 
cirrus is longer, pointed, and extends beyond the lobe. 
The pharynx is lined with a dark-brown cuticle and extends through the peris- 
tomium and three following segments to enter the barrel-shaped proventriculus, which 
occupies 2| segments. This leads into a sub-globular region occupying the rest of the 
7th segment, and then follows the intestine. 
Locality .— 
Commonwealth Bay and Macquarie Island. 
Amongst some material sorted out by Professor Haswell he noted some individuals 
bearing young ones, which he kindly forwarded to me. The young ones are carried on 
each side of the ventral surface just below the ventral cirri. They form a double series 
of 8 or 9 on each side of the segments 12-20. 
*33892—D 
