22 
the short outer segments rather strongly produced ; the first segment is very short, the second 
twice as long as the expanded ends, the third the longest, about four times as long as the 
median diameter ; the fourth is nearly as long as the third, but the distal end is more ex- 
panded ; the fifth is twice as long as its expanded distal end ; the following gradually decrease 
in length so that the antepenultimate is about as long as broad ; the second and third segments 
have both the proximal and distal ends considerably enlarged, and are slender and broadly 
oval in cross section ; the fourth has the proximal end only very slightly enlarged, but gra- 
dually expands from the middle to the distal edge, which is produced and overlaps the base 
of the succeeding segment; the following segments gradually increase in lateral diameter, the 
enlargement of the distal ends gradually decreasing in extent ; the fifth and following segments 
have slight subterminal tubercles ; the opposing spine is terminal, minute, but larger than the 
tubercle on the preceding segment ; the terminal claw is nearly twice as long as the penulti- 
mate segment, and is strongly curved. 
The radials are concealed in the median line, but are slightly visible in the angles of 
the calyx; the IBrj are very short, oblong, five or six times as broad as long, very closely 
united with the succeeding axillary, which is triangular, twice as broad as long. 
The ten arms are 45 mm. long; the brachials resemble those of C. Iiispida. The ossi- 
cles of the division series and the brachials have their distal borders armed with very long fine 
spines; the segments of the pinnules are exceedingly spinous and the third has a slight, very 
spinous, carination. 
The second specimen is smaller, but otherwise resembles the one described. 
5. Comissia gracilipes A. H. Clark. 
A. H. Clark. Proc. Biol. Soc. Washington, vol. 25, 1912, p. 19. 
Stat. 266. 5°56'.5S., 132° 477 E. 595 Metres. 6 Ex. 
Stat. 267. 5°54'S., I32°56'.7E. 9S4 Metres. 2 Ex. 
The largest of the six specimens from Stat. 266 has the arms 40 mm. long; the cirri 
have been lost. 
The larger example from Stat. 267 has been chosen as the type; the centrodorsal is 
large, discoidal, with a broad flat dorsal pole 2 mm. in diameter; the cirrus sockets are arran- 
ged in a single very closely crowded marginal row. 
The cirri are lacking ; but in the smaller specimen the cirri are XX, in one and a 
partial second row, the latter apparently undergoing suppression ; there are also traces of the 
sockets of a third row. The cirri have 9 segments and are from 4 mm. to 4.5 mm. long; the 
first segment is nearly or quite twice as broad as long, the second is slightly longer than 
broad, the third is about three times as long as the diameter of the proximal end, the foift-th 
is slightly longer, and the fifth is about as long as the third; the sixth is about twice as long 
as the diameter of the distal end; the seventh is slightly shorter; the antepenultimate is half 
again as long as broad, and the penultimate is about as long as broad. The longer earlier 
