7^ AUSTRALASIAN ANTARCTIC EXPEDITION. 



The parapods are very short, even anteriorly (fig. 77), with a rounded posterior 

 Up, 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 capilliforms 

 (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 8tli 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. spha"rocephala. 



In the brevity of the feet it bears a resemblance to L. brevicirris Ehlers, 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 Schnmrda, 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 colom-less 

 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 Metschnikoff. 

 Ophryotrocha claparedi Studer. 

 Studer (1878), p. 119, pi. V, fig. 11. 



Paractius notialis Ehlers (1908), p. 101, pi. XIV, figs. 1-6. 

 Paractius notialis Ehlers (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. 



