54 NATURAL HISTORY BULLETIN 



or in small groups. A single row of peractinal pseudopaxillas 

 usually extends along the proximal part of the rays, to about 

 the middle. 



SoLASTER CARiBB^us Yerrill, sp. nov. 

 Plate xxviii ; figures 1 — la. Type. 



Disk rather large ; rays seven or eight : most often eight, rather 

 short. Radii 14°^°^ and 36°^; ratio, 1 :2.6. 



The rays are rounded above and taper regularly. They are 

 closely covered with very small, elevated pseudopaxilla, having 

 very small spinules. Papulae are numerous, but mostly solitary. 

 Both rows of marginals are distinct and alternate. The upper 

 ones are much the smaller, compressed, and not much larger than 

 the dorsals. 



The inferomarginals are more than twice larger, transversely 

 oblong, and bear two or more rows of short spinules. 



The adambulacral plates have an inner or furrow-comb of 

 three or sometimes four graded, webbed spines, the middle ones 

 longest; and a trans^^erse actinal comb of about four larger ta- 

 pered spines, of which the second and third are the larger. 



The jaws have a peroral row of about eight relatively long, 

 tapered, subacute, graded spines (four on each side), of which 

 the two middle ones are considerably longer and larger than the 

 next, while the latter are about twice as long as the third. 



All the specimens are quite young. Taken by the Albatross 

 at several stations in the West Indies. 



Family Korethrasterid^ Dan. and Kor. 



Korethrasteridce Danielssen and Koren. Asteroidea, Xorske Xordiiavs-Expd. 



ZooL, xi, p. 99. pi. xii, figs. 1-14, 1884 (structure). Fislier, op. cit., 



1911&, pp. 252, 340. 

 KoretlirasieriiKE (subfamilT of Solasterid^e) Sladen, op. cit.. p. 462, 1889. 



Perrier, Exped. Trav. et Talism., pp. 151-154, 158. 1894 (descr. and 



analytical table). 



Stellate starfishes with short rays and convex disk, flat below. 

 Dorsal surface covered with thin, flat, roundish plates, overlap- 

 ping by their edges, with a boss in the middle, bearing a fascicle 

 of long, divergent spinules. Inferomarginal plates are trans- 



