50 



In describing their species they say "Body subglobose where 

 the arms are folded inward''. This applies as well to our 

 species. They say "From the base to the fn-e arms somewhat 

 discoid"; this we do not understand, because we do not sup- 

 pose the arras become free until they passed the interradial 

 plates, and we think their species agreed with ours in this re- 

 spect. They say "Eobust, externally' covered with minute gran- 

 ules. Basal pieces three, similar in form and size, forming b3' 

 their outer margins apparently the upper joint of the column, 

 slightly thickened opposite the middle of the pieces. Subradial 

 pieces five, in good specimens presenting five obtusely angular pieces 

 disconnected with each other, resting apparently upon the supra- 

 columnar piece." All these parts are not visible in our specimen, 

 but, if we understand them correctly, the two species may agree 

 in these respects. 



They say "Radial pieces, first sei-ies, generally, four in each 

 ray, the first five resting between the angular points of the 

 subradials are regular in size and form, four are irregular hex- 

 agonal, twice as wide as high, the fifth pentagonal and much 

 smaller than either of the others. The second and third radials 

 are obscurely hexagonal, similar in form, differing slightly in 

 size; the fourth is axillary, obscurely six-sided, rising into a 

 long, angular point; on each of its oblique upper sides sup- 

 porting three pieces of the secondary radials, which are similar 

 in form and nearly as large as the first radials". Much of this 

 will apply to our species, but we think the three secondary 

 radials in each series, in our species, are much smaller than the 

 primary radials. 



They say "TIk^ last of these being axillary support on their 

 upper oblique margins from four to seven brachial pieces." In 

 our specimen the ray on the left and the ray on the right of 

 the azygous area have each eight of these brachial pieces, and 

 another ray shown on the right side of the illustration has ten, 

 and another on the left of the illustration has ten. And from 

 this part to the end of the arms the number of plates do not 

 agree in the two species, though there are sixty arms in each 

 species. 



In their species there are fifteen regular interradials, as follows : 

 One, followed by two in the second range and three in the third 



