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Spines numerous and of nearly equal size, the only exception being the upper spine which is 

 considerably stronger. Only a small part of the surface, near the exterior edge, is covered with 

 delicate hairs which are placed in groups of two or three. 



Second m a xi 1 1 a e with the inner margin distinctly divided into two rounded parts 

 each bearing a group of delicate spines. Outer surface curved and also bearing numerous spines; 

 opening giving entrance to the body-cavity on a small rounded knob. 



Cirri. First pair placed at some distance from the second, close to the mouth; rami 

 short and unequal. The anterior is the shortest and has eight to nine segments, most of them 

 being much broader than long; posterior ramus has eleven to twelve segments which are nearly 

 as long as broad, the last being nearly spherical. Surface of all the segments covered with 

 hairs, the distal segments being more densely clothed than the basal. Several hairs, on the 

 distal segments of the longer ramus especially, long and irregularly curled. 



Second pair longer than the first pair ; shorter, however, and more robust than the 

 cirri of pair 3 — 6. Longest ramus has 24 segments: the first 10 nearly quadrangular, next come 

 8 longer segments, which are about twice as long as broad, finally 6 segments which are 

 narrower, but slightly longer than broad. Shortest ramus having 22 segments, 11 of which are 

 nearly quadrangular, 5 cylindrical and 6 much narrower and shorter. Spines On the front side : 

 3 or 4 pairs on the middle segments, 1 or 2 pairs on the distal segments; on the posterior 

 side: groups of 4 — 6 stouter and a few more delicate spines 011 each segment near the extremity. 



Sixth cirrus long, slender, 28 — 29 segments in each ramus. Segments 1 — 8 nearly 

 quadrangular, 9 — 20. cylindrical, the longest about twice as long as broad; segments 21 — 29 

 narrower, not much shorter than the middle ones. On the front of each segment are 4 to ^ 

 pairs of spines, on the dorsal side groups of three or four spines, of which one or two are 

 stronger, near the extremity of each segment. 



Caudal appendages (PI. VII, fig. 19) 4-jointed with a long and very broad basal 

 segment and three minute distal segments; extremely short hairs along the interior margin of 

 segment 1 , 2 and 3 and at the extremity of 4. 



Penis short, about twice as long as the caudal appendages, cylindrical, conical at the 

 extremity; indistinctly ringed and having short hairs spread over its surface. 



Complemental males. I observed on the right side of the hermaphrodite animal 

 one, and on the left side two small males. They are very small (0,6 X 0,4 mm.), have a short- 

 oval shape and are lodged in a pouch formed by a duplicature of the mantle, which at that 

 place is rather thick and little transparent. The sac or mantle which covers the little male has 

 the surface covered with minute particles of sand or mud, whereas the hairs which ordinarily 

 occur could not be made out. Near the opening of the sac only some very short spines were 

 seen which seemed to be inserted on the tip of a couple of small excrescences. 



The Stations where this species was collected are : 



Stat. 94. June 26, 1899. Lat. 5 \\' .2 N., Long. H9°35'.4E. Depth 450111. (chart). Bottom : 



apparently sand and stone. 

 Stat. 256. December 11, 1899. Lat. 5°26'.6S., Long. i32°32.5E. Depth 397 m. Bottom: 



greyish green mud. 



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