200 Verrill, Notes on Radiata. 



with very small sccales, larger around the edge, with small, narrow, 

 elliptical, widely separated radial-shields. Upper arm-plates more than 

 twice as broad as long, broadest near inner edge, with very acute lat- 

 eral angles, and bordered by broad, triangular, supplementary plates. 



Color, in alcohol, varying on the disk from grayish to purplish 

 brown, usually thickly covered with light spots; arms yellowish 

 o-veen or greenish broAvn with numerous dark purplish brown bands 

 extending entirely around tlie arms, and often with an interruj)ted 

 dark line along the middle ; lower side yellowish gray, the arms 

 crossed by dai'k bands. 



In one specimen the arms are olive-green above, each upper plate 

 having a small dark brown spot in the middle and another broader 

 one on the inner edge, while the supplementary plates have also a 

 similar smaller spot on the upper edge. The transverse bands have 

 the form of large rounded spots of rich, dark brown, surrounded by 

 a ring of yellowish. The arm-spines are greenish, banded with 

 brown. The arms are yellowish beneath, with transverse bars of red- 

 dish brown, occupying two or three plates, corresponding to the large 

 spots above. 



In other specimens, also w^ell preserved, the disk and arms corres- 

 pond in their colors, the disk being clear reddish brown, very thickly 

 spotted with light olive-green, of the same tint as the ground-color of 

 the arms, while the transverse bands of the arms are reddish brown, 

 like the ground-color of the disk, but they are partially interrupted, 

 along the median line, by a faint, yellowish band. One specimen 

 from which part of the arms have been partially or wholly broken 

 and again restored, has the disk and uncast portion of the arms red- 

 dish brown, the latter with narrow bands of deep browm, while the 

 restored portions of the arms are olive-green, with broad bands of 

 reddish brown. 



Ophiocnida hispida Lyman, op. cit, p. 133. 



OphioUpis hispida LeConte, loc. cit, p. 318, 1851. 

 Amphiura hispida Liitken, Addit. ad hist. Oph., p. 119. 



Two specimens of this curious species have been received from 

 Panama in the collection of Mr. Bradley. The largest measui-e 3-15 

 inches in length of arms, and -32 in diameter of disk. 



This species is remarkable for its very long, slender arms, and its 

 disk covered above and below by small, sharp spines. 



The radial shields are narrow, tapering inward to a point, separated 

 by a spiny strip. There are three short, rounded mouth-papillae, of 

 which the inner one is largest, on each side of the mouth-slits. Arm- 



