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Cirri long, with short and numerous segments, with the exception of those of the first 

 pair which are rather short and broad. 



First cirrus placed far from the second ; its pedicel is relatively long, its rami short, 

 slicrhtlv unequal, the longest has also the broadest segments; both rami have eight segments, 

 the last being very minute. The segments on both rami bear strong bristles placed in a row 

 near the anterior extremity of each segment. The segments of the strongest ramus have further 

 a dense clothing of bristles on the side which is directed towards the more slender ramus. 

 Whereas the small terminal segment of the more slender ramus bears three strong spines, the 

 same segment of the stronger ramus has one slender spine only; further a number of extremely 

 small hairs are placed at its extremity. In the row of bristles at the extremity of the sixth and 

 seventh segments of the stronger ramus two or three bristles are wanting; minute scales are 

 present at the places left open. Beneath the basal articulation of the first cirrus a long filamentary 

 appendage is situated. 



Second to sixth cirrus much resembling each other, their length and the number 

 of the segments slightly increasing from the second to the sixth ; in the second each ramus has 

 13 a 14, in the sixth 16 a 17 segments. The pedicels and the lowermost segments of the rami 

 of the second and third cirri are much more densely clothed with hairs than the same parts 

 of the fourth — sixth cirri. As a rule each segment of each ramus bears a row of bristles near 

 its extremity, two very strong bristles on the dorsal face of each segment near the articulation 

 of the following segment and a group of bristles on the ventral face, also near the extremity of 

 the segment. The ventral face of most segments shows a row of very short stiff hairs, giving 

 it the appearance of being serrated. 



The rami of the 5''' and 6''^ cirri are slightly unequal; the outer ramus has 17, the 

 inner only 1 5 segments. 



Caudal appendages long, reaching as far as the end of the fifth segment of the 

 rami of the sixth cirrus, composed of 14 very slender segments each with a number of very 

 delicate bristles or hairs on its summit. 



Penis indistinctly ringed or segmented, tapering towards the extremity; numerous delicate 

 hairs scattered over its surface and a dense tuft of slightly stronger hairs at its extremity. 



One of the specimens I investigated was furnished with eggs which were united in one 

 egg-mass. The eggs were extremely numerous and very small. Most of them contained Nauplii 

 and many seemed to have come out before the animal was caught and put into the preserving 

 fluid. The form of the eggs was long-oval, their length was 0,3, the greatest breadth 0,13 mm. 

 Larvae without eyes or without black pigment in the eyes. 



This species was taken at : 



Stat. 316. February 19, 1900. Lat. 7° 19.45., Long. ii6°49'.5E. Depth 538 m. Bottom: fine, 

 dark brown sandy mud. 



The specimens were found attached to the spines of Porocidaris clegans, a sea-urchin 

 which was caught with the trawl. There are in all a dozen large and about as many smaller 

 specimens. Often one or two large and a few smaller specimens form a group, being attached 

 near one another to the same spine. 



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