24 
AUG. F. FOEKSTE 
posed radials, in the proximal parts of the rays, have been dark- 
ened. Only a small portion of these supposed radials is seen 
in certain cases, due to hiding beneath the overlapping accessory 
plates, intervening between the columns of radials and supra- 
marginals. Proximally, there appear to be two columns of the 
accessory plates. These plates are ovate in outline, the more 
or less pointed ends being directed diagonally both toward the 
distant end of the ray and toward the radials, more or less over- 
lapping the latter. The original arrangement of plates appears 
to have been disturbed least in the proximal parts of ray II; in 
ray V, the basal supramarginal and the two adjacent plates of 
the same series have been crowded inward, permitting only the 
tips of several of the adjacent accessory plates to show; other- 
wise the plates of the proximal part of this ray are but little 
disturbed. 
The number of supramarginals in each column, exclusive of 
the basal supramarginal, apparently varies between 17 and 19, 
of which the distal two or three are much smaller than those 
immediately preceding. The most distal accessory plates occur 
at the side of the fifth, sixth, or seventh of the supramarginal 
plates, not counting the basal plate of the series. It is diffi- 
cult to interpret the distal parts of rays II and IV without 
assuming the presence of supernumerary plates in the radial 
series, one or two supernumerary plates occurring also in three 
of the supramarginal series. 
All of the rays expose some of the inframarginals, the longest 
continuous series being exposed on the sinistral side of ray I and 
on both sides of ray II. The number of these inframarginals 
appears to be slightly greater than that of the supramarginals, 
so that while they alternate with the latter proximally, they are 
even with them laterally in more distant parts of the ray, and 
become alternate .again farther on. The inframarginals are 
larger in size then the supramarginals at least in the distal parts 
of the rays. They form the margins of the rays and extend 
from the abactinal to the actinal side of the rays, and are seen 
best on lateral view. No ambital or accessory plates occur be- 
tween the columns of supramarginals and that part of the series 
