This species strikes the eye by the striped appearance of its oblong elytra, that are 

 furnished with 4 or 5 longitudinal dark stripes, in a somewhat obHque direction from the inner 

 to the outer margin. Potts however mentions a specimen from Minikoi, in which the posterior 

 elytra were more uniformly pigmented. Moreover the elytra show in their posterior half, in the 

 vicinity of the scar of attachment, a couple of keels, having the same direction as the above- 

 named stripes. Grube and M.\renzeller mention only a single keel and some specimens appear 

 to want both of them, for Potts found, that in a specimen from Diego Garcia no tracé of 

 these structures was present and Mc Intosh also does not mention them. Along the anterior 

 and interior margin of each elytron there occurs a band of small refringent bodies, also figured 

 by Mc Intosh and Potts, thongh not mentioned by them; Marenzeller calls them "sehr 

 niedere Papillen", a name, which however in my opinion does not suit them, because they do 

 not extend above the surface of the elytron, but He embedded in a dish-like cavity of the cuti- 

 cula. Usually they have the appearance of small oval buttons, with a canal in the centre. The 

 number of elytra amounts to 22 or 23 pairs; like Potts' specimen from Minikoi, our specimen 

 from Aru Island has 22 pairs of scales, whereas Marenzeller mentions 23 pairs. In the noto- 

 podium besides the aciculum I observed only one or two short setae, with undivided tip and 

 several transverse ridges beneath it ; also Mc Intosh and Marenzeller found a few of them, 

 whereas the specimens, examined by Grube and Potts, did not show any. 



In the Siboga-specimens the palpi are enormously long, tapering distally and extending 

 somewhat beyond the tentacle, that is dilated beneath its terminal filiform process ; the paired 

 antennae are not quite so long as the last one. Grube also says : "impar paribus paulo lon- 

 o-ius" ; how-ever Mc Intosh asserts, that the tentacle should be longer than the palpi and the 

 antennae should have nearly the same length as these. Marenzeller also found the antennae 

 longer than the palpi; he adds however; "dieser Fall beweist wieder, wie niedrig, ceteris pa- 

 ribus, Angaben über die Grössenverhaltnisse der Anhange des Kopflappens taxiert werden 

 mussen." I quite agree with Marenzeller in considering Polynoc platycirrus Mc Int. to be 

 identical with Polynoc fn/voviftafa Gr., for, though Grube has overlooked the large flattened 

 dorsal cirri, Mc Intosh himself already recognised the great agreement of the Challenger-worms 

 with those from the Philippines. 



2. Halosydna pilosa n. sp. PI. XIX, figs. i and 2. 



Malacca Strait, 5°8' Lat. N., 100' 11' Long. E. Depth 19.S M. Van Kampen. 17 Juni 190S. 



In Malacca Strait by Dr. van Kampen a small Lepidonotidc was dredged, that could 

 not be identified with any species hitherto described from the Indian Waters and probably must 

 be ranged among the genus Halosydna. Its body consists of about 40 segments and bears 1 7 

 pairs of scales, overlapping each other in the median dorsal line. They (PI. XIX, fig. i) are 

 marbled with black and have a black spot on the scar of attachment, the latter being situated 

 nearly in the centre. Their shape is auriculate and in their general appearance they much 

 resemble the elytra of Gattyana cirrosa^ as the posterior and exterior part of their margin 

 is beset with a row of slender, filiform appendages; laterally these cilia alternate with short 



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