72 
AUSTRALASIAN ANTARCTIC EXPEDITION. 
The parapods are very short, even, anteriorly (fig. 77), with a rounded posterior 
lip, which does not project much beyond the anterior lip ; the length of which scarcely 
exceeds its height. Posteriorly the feet are even shorter (fig. 78). Each is supported 
by a single uncoloured aciculum ; the chsetse are very few ; of the capilljforms 
(fig. 81) I see only one in the 8th foot ; there are no roots embedded in the foot, so 
that it is not a question of breakage and loss. In the 25th foot there are none. 
The hooded hooks are also few ; in the 8th only one is present ; in the 25th 
there are four; and at about the 45th three only. 
These hooded hooks are, for the most part, without any articulation (fig. 80) ; 
the hood is strongly striated, and at its proximal region its edge is denticulated, some 
five or six distinct teeth being recognisable, at any rate in the 25th foot. 
In the various preparations of feet from different parts of the worm I met with 
only one articulated hook ; it presents below the articulation a “ ventral ” independent 
flange (fig. 79), like that in L. magalhaensis. 
The upper jaws recall those of L. magalhaensis , but the lower jaw plates are white, 
and resemble those of L. sphcerocephala. 
In the brevity of the feet it bears a resemblance to L. hrevicirris Elders, and in this 
species, too, there are no articulated hooks, but the form of the hooks is very 
different, and the species differs from the present in other ways. 
From L. sphcerocephala Schmarda, of which I have studied local examples, the 
present species differs in having very much shorter feet ; in the early cessation of the 
capilliforms ; in the lack of articulation in the hooks ; in having a single colourless 
aciculum instead of three, of which one or more is dark brown ; and in the structure 
of the upper jaw plates. 
Locality .— 
Macquarie Island. 
Genus Ophryotrocha claparede and Metschnikqff. 
Ophryotrocha claparedi Studer . 
Studer (1878), p. 119, pi. V, fig. 11. 
Paraetius notialis Elders (1908), p. 101, pi. XIV, figs. 1-6. 
Paractius notialis Elders (1913), p. 500. 
A very large number of specimens of this minute worm, which measures about 
2-3 mm., were collected by Dr. A. L. McLean in Boat Harbour. He notes that when 
alive they are “ pale, with dark patches dorsally.” There is no pigment in the 
preserved worms, and it may be that he saw the black jaws through the transparent 
wall. 
