640 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxvi. 



Radials projecting slightly beyond the edge of the centro-dorsal ; 

 IBi\ oblong, short, about three and one-half or four times as broad as 

 long, not in lateral apposition, with a rounded ventro-lateral process 

 in the proximal half; IBr^ (axillary) broadly pentagonal, twice as 

 broad as long, the lateral edges about half as long as those of the 

 IBr.,, produced into a rounded prominent ventro-lateral process; 

 synarthrial tubercles rather prominent ; IIBr, IIIBr, and IVBr 

 (when present) 2; elements of division series and first brachials with 

 prominent rounded ventro-lateral processes. 



Thirty-three or thirty-four arms 120 nun. long, in general resem- 

 bling those of S. teiiuipirnin. 



Pj 14 mm. long, stout, stiff, and spine-like, with fourteen joints, the 

 first two somewhat broader than long, the third to the fifth squarish, 

 the remainder becoming gradually elongated and twice as long as 

 broad distally ; Po and P3 exactly like P^ ; P4 10 mm. long with ten 

 joints, resembling the preceding; P^ 7 mm. long, spine-like as the pre- 

 ceding, but somewhat more slender, with eight joints; following pin- 

 nules decreasing gradually in length, P^ being 5 mm. long with eight 

 joints; subsequent pinnules remaining of similar length, but de- 

 creasing in stiffness and increasing in the numl)er of joints, V^., being 

 5 mm. long with twelve joints, the third squarish, the distal twice as 

 long as broad, only slightly stiffened proximally ; distal pinnules 

 slender, 9 nun. long. 



Type-specimen. — Cat. No. 18 H = ^^ijj^, Indian Museum; "India." 



Cotype.—Qvii. No. 25481, U.S.N.Iil. ; from 'r India." 



Family COLOBOMETEIDzE. 



Genus COLOBOMETRA A. H. Clark. 



COLOBOMETRA DISCOLOR, new species. 



Cirri XVIII-XXII, 20-40 (usually about 35), 25 mm. to 80 mm. 

 long, slender, resembling those of C. i^ersp'moHa^ but with the distal 

 ends of the joints not so strongly spinous. 



liadials projecting slightly beyond the centro-dorsal; IBr^ oblong, 

 slightly over twice as broad as long, the ventro-lateral borders slightl}' 

 produced into a thin border, by which they are in ap]iosition; YWv., 

 (axillary) broadly pentagonal, twice as broad as long, the lateral edges 

 somewhat more than half the length of those of the IBr^, making 

 with them a straight line, and with the same ventro-lateral projection; 

 a slight constriction is usually present just below the lateral angles. 



Ten arms, 80 mm. long, rather slender, resembling in general those 

 of C. suaois. 



Po absent; P^ 0.5 mm. long, small, tapering rapidly to a slender 

 and delicate tip, with 15 or 10 joints; first joint twice as broad as 



