ACTINOCRINID^. 623 



followed by two arms, the two outer supporting one arm each, there being 

 normally six arms to the ray, exceptionally five. Arms equidistant, crowded 

 at their bases, and bending abruptly outward; they are very long, rounded 

 on the back, and tapering ; the tips infolded, descending to the top of the 

 calyx. The back of the arms covered with two series of rather large nodes, 

 whose sharp points are directed upwards. These nodes are larger than 

 those of the preceding species, but not so regularly arranged, and are farther 

 apart ; they are not confined to one plate, but generally extend over two 

 or more, sometimes even encroaching upon those of the opposite series. 

 Pinnules long, constructed and arranged as in C. ornaiissimus. Regular 

 interbrachials five, the two of the second row almost as large as the first. 

 Anal plate, which is generally a little narrower than the radials, supports 

 2, 3, and 2 plates. There is one interdistichal, but no interpalmar. Ven- 

 tral disk hemispherical, covered by large spiniferous plates, separated by 

 small, almost flat pieces. The posterior oral is erect, and forms a part of 

 the ventral tube, which is almost central and comparatively short. Column 

 moderately strong, composed of alternate large and small joints, rounded on 

 their edges. In a specimen before us in which the stem is preserved to its 

 distal end, it measures nearly 27 cm. The upper half is stouter than the 

 lower half, which ultimately terminates in a fine point, and is for some dis- 

 tance provided with small branches, too delicate to have served as a means 

 for permanent attachment. 



Horizon and Locality. — Same as last. 



Tyjpes in the collection of Wachsmuth and Springer. 



Remarks. — Differing from the preceding species in the style of its orna- 

 mentation, the abrupt spreading of the calyx near the arm bases, its greater 

 length, and in the largo, spiniferous plates of the ventral disk. 



