26 
AUSTRALASIAN ANTARCTIC EXPEDITION. 
Each young one consists of head and 4 chsetigerous segments, followed by one 
segment with a parapod, but without chsetae, and the anal segment carries a pair of 
long cirri. 
Owing to the position of the mother, I am unable to see the characteristic gom- 
photrich, but as the specimens come from the same locality I have little doubt that it 
is this species. 
Genus Sph^rosyllis Malmgren. 
Sphjerosyllis McIntoshi Elders. 
Scdvatoria kergudensis McIntosh (1885), p. 188, pi. XXX, fig. 4 ; pi. XXXIII, 
fig. 1 ; pi. XV a, figs. 11 , 12. 
Sphcerosyllis mcintoshi Elders (1897), p. 46. 
Splicerosyllis mcintoshi Elders (1913), p. 481. 
(Plate 1, figs. 4-6.) 
Ehlers has laready shown that Scdvatoria of McIntosh is in reality a Syllid 
belonging to Malmgren’s genus. McIntosh, although he placed the worm amongst the 
Hesionidse, recognised in the course of his account that in several features it approached 
the Syllidse. 
In the present collection I find specimens of this small worm amongst those taken 
in Boat Harbour during the month of June, 1912, in 3-4 fathoms of water. 
They are only 3-4 mm. in length with 28-33 segments. The tentacles and the 
dorsal cirri have swollen bases and narrowed tips, but are not so short and stumpy as 
in the typical Sphcerosyllis. The rounded prostomium (figs. 4, 5) carries three tentacles, 
two pairs of eyes, and a pair of palps ; the last are fused and project beyond the 
prostomium. Ventrally this region is deeply furrowed in the median line indicating 
the double nature of this organ. McIntosh, it will be remembered, denied the existence 
of the palps ; but his specimens were soft and ill-preserved. 
He was, I think, in error too in stating that the filamentous tapering extremity of 
tentacle and cirrus is “ distinctly segmented/’ for in my specimens, 'Much are well 
preserved, there is no indication of this, though there are a few quite irregularly disposed 
constrictions along this region, when the animal is mounted in glycerine. 
I have thought it well to give a careful drawing of the head (fig. 4) as McIntosh’s 
figure, the only one as far as L know that has been published, is misleading. 
The peristomial cirri are short. The following segments carry long parapods, 
each with a single bundle of chsetse, a dorsal cirrus, and a short cylindrical ventral cirrus 
which extends beyond the chsetigerous lobe. 
The chsetigerous lobe is supported by two acicula, each of which is swollen just 
below the point (fig. 6). Below these are 8-10 chsetse, the uppermost of which is 
capilliform, as McIntosh has noted, while the rest are gomphotrichs of the form shown 
in his figure. 
