614 BULLETIN 82, UNITED STATES NATIONAL MUSEUM VOLUME 1 



distal border slightly and evenly concave. The inner proximal angles are just in contact 

 over the distal angle of the axillary, and the inner sides make with each other an angle 

 of about 70. The second brachials are nearly twice as large as the first, with the proxi- 

 mal border smoothly and rather strongly convex. The first syzygial pair (composed of 

 brachials 3+4) is about half again as long as broad, slightly longer interiorly than 

 exteriorly. The fifth brachial is nearly as long as the preceding syzygial pair, but the 

 sixth, seventh, and eighth are only slightly longer than broad. The second syzygial 

 pair (composed of brachials 9 + 10) is not quite twice as long as broad; the syzygial 

 line is slightly raised. After the second syzygy the brachials become very obliquely 

 wedge-shaped and longer than broad. The ends of the brachials are unmodified. 



Syzygies occur between brachials 3+4, 9 + 10, and 14+15, and distally at intervals 

 of 3 or 4 muscular articulations. 



P! is 5 mm. long, moderately slender, composed of 10 segments, of which the first 

 is about as broad as long, the second is twice as long as broad with the distal end slightly 

 enlarged, and the third is three times as long as broad or longer; those following are 

 greatly elongated and slender except the last, which is minute, not a fourth as long as 

 that preceding. P 2 appears to resemble PI. 



The broadly exposed interbrachial areas of the disk bear numerous small rounded 

 granules in the central portion. 



In the perisome of the pinnules there are two rows of spicules, an inner along the 

 pinnule segments and an outer, of which the inner ends overlap the outer ends of the 

 spicules of the inner row. The spicules of the inner (lower) row are about half as long 

 as the pinnule segments, slender, and bent, or more or less broadly curved in the middle. 

 The lower ends are occasionally bifurcated, the long pointed branches of the bifurcation 

 diverging at an angle of about 90, and the upper or outer ends are more or less broad- 

 ened, sometimes fanlike, and pierced with from one to three holes, more rarely simply 

 or twice bifurcated, the bifurcations with short branches. The outer spicules are about 

 half as long as the inner and correspondingly more slender. The lower end is usually 

 pointed, rarely bifurcated; the upper (outer) end is expanded into a delicate network 

 usually surrounding three large holes; sometimes there are only two holes, or a single 

 hole, and rarely the tip is simply doubly bifurcated. 



The color (dry) is yellowish white, the cirri clearer white, the perisome brown. 



Notes. The largest specimen from station 3391 has the arms about 90 mm. long. 

 There are three columns of cirrus sockets in each radial area on the centrodorsal, but 

 one column is represented by only a single socket. PI is 6 mm. long with 10 to 12 

 segments. P 2 is 5 mm. long, about as stout basally as P 1( smooth and tapering evenly 

 to a delicate tip, with 12 segments, of which the first is oblong, half again as broad as 

 long, the second is half again as long as broad, the third is twice as long as broad, and 

 those following gradually elongate, becoming about six times as long as broad distally. 

 The distal pinnules are long and slender, 11 mm. long, with 22 segments. 



In the specimens from stations 3391 and 3412, which are preserved in alcohol, 

 the perisome is very light, grayish or dirty yellowish white, and translucent. The 

 interbrachial areas are naked or more or less thickly beset with small calcareous gran- 

 ules, especially in the central portion. The distal intersyzygial interval is usually 

 3, though frequently 4, muscular articulations. 



Dr. H. L. Clark wrote that this dainty little comatulid is apparently common 

 on both coasts of Cuba, as it was taken by the Atlantis in 1938 and even more frequently 

 in 1939. It was found at no fewer than 18 stations at depths of from 200 to 290 fath- 



