122 
a very minute sharp spine in lateral view; on the second-fourth segments the lateral angles 
of this ridge project beyond the borders of the cirrus segments as seen dorsally, but from that 
point onward it becomes narrower, beyond the sixth dividing more or less completely into two 
transversely oblong sharp ridges or small sharp spines; the antepenultimate segment bears a 
single spine; the opposing spine is much larger than the spine on the preceding segment. 
The radials are just visible beyond the centrodorsal ; the IBrj are very short, about four 
times as broad as long, with the proximal and distal edges straight and parallel, and the 
lateral edges converging slightly ; there are slight rounded ventrolateral projections ; the axillaries 
are broadly pentagonal, half again as broad as long; -synarthrial tubercles are moderately 
developed; like the IBr^ the axillaries and first brachials have slight rounded ventrolateral 
processes. The arms resemble those of the other species of the genus; on the lower oblong 
brachials there is a faintly indicated rounded median carination. The arms are 35 mm. to 
40 mm. long, and very slender. 
In some specimens the ventrolateral processes on the ossicles of the IBr series and the 
first brachials are produced into a rounded triangular flange, of which the axillary has two, a 
proximal and a distal. 
Pj is 2 mm. long with 8 or 9 segments, nearly as stout basally as P,, but tapering 
more rapidly and becoming slender and delicate distally ; the first segment is short, the following 
gradually increasing in length and becoming slightly longer than broad on the third and about 
twice as long as broad distally ; the distal edges of the outer segments are slightly spinous. 
P„ is 3 mm. long, stiff and spine-like, though slender, tapering slowly from the base to the 
tip, composed of 8 or 9 segments of which the first is twice as broad as long, the second is 
nearly as long as broad, and the third is nearly twice as long as broad; the remainder are 
about three times as long as broad ; the third and following bear long and prominent spines 
on the prismatic angles; the pinnule is rather strongly prismatic. P^ is 2 mm. long, small and 
slender, slightly stiffened, composed of 8 segments which become elongate distally. P^ is 125 mm. 
long, very delicate and not stiffened, composed of 9 segments which become much elongate 
distally. P. is similar to Pj, but slightly shorter. The distal pinnules are 2.5 mm. long, exceedingly 
slender and delicate, composed of 1 3 segments of which the second and third are strongly 
carinate and the outer are very greatly elongated. 
Some specimens show a much greater development than others of the spines on the 
segments of the lower pinnules. '' 
The disk is thickly sprinkled, or almost covered, with small rounded plates. 
The specimen from Stat. 79''' has the arms about 15 mm. long, and 11 — 12 cirrus 
segments; that from Stat. 144 has arms about 20 mm. long; that from Stat. 260 has arms 
28 mm. long, and cirri with i 1 segments. 
In addition to those mentioned above I have before me a specimen from the Gulf of 
Davao, Philippine Islands, dredged in 18 fathoms ("Albatross" Stat. 5248; Cat. N" 36038 
U. S. Nat. Mus.). 
