46 NATURAL HISTORY BULLETIN 



or sometimes two furrow-spines within the groove. Pedicellariae 

 have not been found in any species. 



The eggs and young are carried in clusters around and below 

 the oral region until the young take on the stellate form pro- 

 vided with sucker-feet. 



This genus diffei*s from Echinaster in the absence of a thick 

 external integument ; in the covering of minute spinules ; and in 

 the nearly uniform small ossicles of the dorsal and lateral skel- 

 eton, the connective ossicles being almost indistinguishable from 

 the primary series; and in the quadrangular form and regular 

 arrangement of the marginal and interactinal plates. 



According to the accepted rules of priority it is necessary to 

 adopt Henricia instead of Crihrella as the name of this genus, 

 for it has at least a month of priority. Crihrella of Agassiz, 

 1835, was a different group. 



Henricia ANTiLLARUM (Perrier). Verrill, 1914a, p. 210. 



CribreUa antillarum Perrier, Bull. Mus. Comp. Zool., vol. ix, p. 8, 1881; 

 Etoiles de Mer, p. 207, pi. iii, fig. 3, 1884. 



Rays, in the type, five, rather long, slender terete, regularly 

 tapered. Radii 7°^ and 42°^'" ; ratio, 1 :6. 



Dorsal ossicles small, reticulated, leaving numerous papular 

 areas mostly smaller than the ossicles and containing a single 

 papula. They are covered with numerous minute, short spinules. 

 Madreporic plate single, raised, about midway between the cen- 

 ter and margin of the disk, and covered with minute spinules 

 similar to those of the dorsal ossicles. 



Two marginal rows of plates are well developed, rectangular, 

 closely covered with minute spinules. 



There are two or three rows of interactinal plates proximally, 

 but only one reaches the middle of the ray. Their larger plates 

 are quadrangular and of the same length as the marginals and 

 adambulacrals. 



The latter are transversely oblong; their actinal surface is 

 covered with small spinules ; five or six of them become abruptly 

 larger near the furrow margin and stand in two rows, two or 

 three in each row. 



Dredged by the Albatross at station 2671, off Georgia, in 280 

 fathoms. (No. 18,392, N. Mus.) 



