38 



of the rami causes the whole cirrus to he short. The first pair is placed near the mouth and 

 at some distance from the second. Its rami are nearly ecjual and composed of five segments 

 onl\'. The first segment is very long, longer than the other four segments together and not 

 ciuite distinctly composed of four or five short and broad segments soldered together. Segments 

 2 — 4 are of a very characteristic pentagonal shape, segment 5 is short, small, quadrangular. 

 The sli(Thtly shorter ramus is at the same time a little narrower. It can be said to have one 

 seo-ment more than the longer ramus, as the last segment of those which are soldered together 

 to form the first segment of the longer ramus has remained free in the shorter one. Each 

 segment bears a broad group of long bristles on its outer surface-, the first segment shows 4 

 or 5 such groups of bristles. The last segment has the bristles planted close to its extremity. 

 On the inner surface the bristles are less numerous and not placed so regularly, on the outer 

 segments they form a row near the extremity. Along the dorsal margin, each segment bears 

 a long bristle planted slightly above the middle of its length. 



The pedicel of the first cirrus is much shorter than that of the other cirri. The filamentary 

 appendage " is seated beneath the basal articulation of the first cirrus; it is long, conical and 

 pointed at its extremity. 



The 2"^^ cirrus has ten .segments in both rami, the 3''^ 11 in the shorter and 13 in the 

 longer ramus; the 4'*^ has 12 and 13 segments, the 5"^ and 6''' 13 and 15 — at least these 

 were the numbers in the specimen I investigated more carefully. The pedicels are long, the 

 segments short, slightly longer only than broad. Each segment is protuberant at the anterior 

 face, a little beneath the articulation with the following segment. On this protuberance is planted 

 a dense brush of bristles; a transverse row of bri.stles is also inserted on the outer side near 

 the extremity of each segment. In the upper segments the.se bristles have the character of thick 

 and claw-like spines. On the inner side the bristles are less strong and also less numerous. 

 They form distinct rows only on the upper segments. 



The basal segment of each ramus is in most cirri indistinctly divided into two segments. 

 Thus the 6"' cirrus might as well be said to have 1 3 and 15 as 12 and 1 4 segments. 



The caudal ajjpendages are rather long and delicate. In one of the specimens I 

 dissected the one consisted of 8, the other of 10 joints. In length they equal the pedicels of 

 the 6''> cirrus, the lo-jointed one being slightly longer. The basal segments are short and broad, 

 the middle long and narrow, the upper very narrow, but not so long as the middle ones. The 

 short and thin bristles are planted on the extremity of each segment, the terminal segment 

 being- furnished with a tuft of bristles. 



The penis is thick and long, curled together in a curious way, tapering towards the 

 extremity, where its end is indistinctly bilobed. The articulations are not very plain, yet the 

 basal as well as the terminal ])ortion can be said to be ringed, there being an intermediate 

 part where the rings can hardly be distinguished. Ver\' long and delicate hairs are scattered 

 over the surface, forming a .somewhat irregular tuft at the extremity in the little furrow between 

 the two points or lobes. 



The eggs are small and very numerous. I found a single lamella onl)-. The eggs in 

 the specimen I have investigated were far advanced in development : most of them contained 



