The cirri are XXI \', 12 — 13, 13 nun. to 15 mm. loii^ ; llu- tir.st sej^ment is short, llie 
second nearly or quite twice as broad as lon<4, the third twice as \ong as the diameter of the 
ends, the fourth-si.xth three times as Uin^^ as the median diameter, the following decreasing in 
lcn<;ih so that the antepenultimate is about one third again as long as broad -, the opposing 
spine is represented by a slight subterminal tul)ercle; the terminal claw is longer than the 
penultimate segment, rather stout, moderately curved; the longer proximal cirrus segments 
have slightly swollen distal ends, this character gradually disa|)pearing as the segments become 
shorter: the eighth or ninth segment becomes lighter in colour distally, and is a slightly marked 
transition segment, though the preceding segments are smooth like the following; the last four 
or hve segments before the penultimate have their distal dorsal margin very slightly thickened ; 
the cirri are moderately compressed laterall)-, this increasing slowly and uniformly from the 
base to the short outer segments. 
The subradial clefts are very narrow and very deep. The ends of the basal rays are 
very prominent as rounded tubercles in the angles of the caly.K. 
The radials are concealed in the median line, being visible only at the side of and 
above the ends of the basal rays; their distal angles are separated interradially by a promi- 
nent \'-shaped gap ; the IBrj are very short, slightly trapezoidal, narrower distally than basally. 
three times as broad as long; they are very widely separated laterally, the sides of adjacent 
IBrj making rather more than a right angle with each other; the axillaries are very broadly 
pentagonal, almost triangular, about twice as broad as long; the lateral edges are about half 
as long as those of the IBrj, and make slightly more than a right angle with them. 
The ten arms, which were probabl)- about 90 mm. long, resemble those of C. decameros, 
but are not so rugged and show only traces of the synarthrial and articular tubercles. 
The ossicles of the division series and the lower brachials are covered with fine dermal 
granulations. 
Pj is 15 mm. long, composed of 42 segments; the comb occupies 19 segments, ari.sing 
very gradually; the teeth are low, w-ell separated, and well rounded distally, in height not 
reaching the lateral diameter of the segments which bear them; the second-fourth or -fifth 
segments of the pinnule have prominent and coarsely spinous ends. P„ is 12 mm. long, similar 
to Pj but smaller and proportionately less stout. P^ is 7 mm. long, very slender, proportiona- 
tely smaller and more slender than P„, P^ is 6.5 mm. long, slightly stouter than P.., without 
a comb, slightly stouter than P,, though becoming very slender distally. The distal pinnules 
are 12 mm. long with 23 segments which have prominent articulations. 
This species differs from C. decameros in having fewer cirri which are composed of 
fewer .segments and are very slightly stouter and less compressed laterally. The synarthrial and 
articular tubercles are not so prominent as in C. dccamei'os, but the rugged character of the 
arm bases is indicated, and might become prominent in larger examples. 
SIBOGA-EXPEDITIE XLIl/'. 
