218 ECHINODERMA OF THE InDIAN MuSEUM, PART VII. 



in a point at about the level of the third or fourth cirrus socket ; the columns of 

 each radial area are closely crowded against, and tend to alternate with, the 

 columns of the adjacent areas. 



Cirri XL, 25-26, about 40 mm. long ; first segment very short, second and 

 third equal in size, about twice as broad as long, fourth slightly longer, fifth as 

 long as broad ; sixth, seventh, and eighth segments the longest, slightly longer 

 than broad to about one third again as long as broad, the following very gradually 

 decreasing in length so that those in the distal half are about as long as broad or, 

 in some cases, slightly broader than long; third segment from the distal end of 

 the cirrus slightly longer than broad ; antepenultimate segment about one-third 

 longer than broad; penultimate segment, which is somewhat less in diameter than 

 the preceding, half again as long as broad; the distal dorsal edges of the outer 

 segments show an inclination to develop low blunt tubercles ; opposing spine repre- 

 sented by a small blunt tubercle , terminally situated ; terminal claw long, about 

 as long as the penultimate segment, moderately curved. The cirri are rounded 

 basally but moderately compressed in the distal two-thirds ; there is no trace of 

 dorsal carination. 



Disk completely covered by a pavement of small plates ; side and covering 

 plates strongly developed along the pinnule ambulacra. 



Ends of the basal rays visible as large rhombic tubercles in the angles of the 

 calyx; radials concealed; IBr, short, four or five times as broad as long, chevron- 

 shaped, in close lateral apposition, with a more or less wavy proximal and distal 

 border ; the apposed edges are somewhat thickened and produced and there are a 

 few low broad tubercles on the distal border; IBr.^ rhombic, twice as broad as 

 long, rising to a rather sharp dorsoventrally elongate tubercle with the IBr, ; 

 lIBr 4 (3-|-4) ; on three of the IIBr series the syzygy between the two outer ele- 

 ments is replaced by a synarthry ; IIIBr 2 (l-(-2), developed interiorly. The divi- 

 sion series are very strongly rounded dorsally and have a sligh tly indicated median 

 carination ; they are in very close lateral apposition and the lateral edges are 

 slightly produced and everted, suggesting the conditions found in Glyptometra. 



Thirty-two arms (in the type) 150 ram. long; first two or four brachials oblong, 

 short, united in S3'^zygial pairs which are not quite so long as broad; following two 

 or three brachials oblong, somewhat over twice as broad as long, then becoming 

 wedge-shaped, twice as broad as long, and slightly longer and more oblique after 

 the proximal tlxird of the arm, wlien the brachials develop slightly prominent 

 distal ends. 



Pd 17 mm to 20 mm. long, very slender and flagellate distally, with from 

 fifty to fifty- three segments; first two segments disproportionately large, twice as 

 broad as long, strongly flattened exteriorly ; third segment about half as broad as 

 the first and half as long as the second, twice as broad as long : following segments 

 to the fifteenth decreasing in diameter and increasing in length, at first twice 

 broad as long but becoming after the fifteenth uniformly small and about as k ng 

 as broad ; P, about the same length with forty-five segments, similar, but much 



