356 THE CRINOIDEA CAMERATA OF NORTH AMERICA. 
consists of four plates, which are much narrower at the top than at the 
bottom, and two of them are narrower than the others. Construction of the 
anal tube, its length, and the structure of the arms unknown. 
HMorizon and Locality. — Niagara group; St. Paul, Ind. 
Type in the collection of Wachsmuth and Springer. 
Remarks. —The unique specimen from which the above description is 
made, was discovered by Mr. Charles 8. Beachler, a very enthusiastic collec- 
tor, in whose honor the species is named. He has since found a second 
specimen at the same locality. 
Callicrinus acanthinus Rrivcursere. 
Plate LXX XIII. Fig. 18. 
1890. Rrvevesere ; Annals N. York Acad. Sci., Vol. V., p. 302, Plate 3, Figs. 1 and 1a. 
The specimens from which this species was described are quite fragment- 
ary, only showing portions of the dorsal cup, and nothing of its super- 
structure, but enough is seen to indicate that the species is unlike any other 
heretofore described. The dorsal cup evidently was very short, shorter even 
than represented in Ringueberg’s restored figure in the Annals, Plate 3, 
Fig. 1, the lower ends broadly truncated, and almost as wide at the bottom 
as at the top. The cup rests upon the median part of the large radials; the 
lower end of the plates curves inward to meet the four basals, and the upper 
end abruptly upwards. 
The basals, together with the lower part of the radials, form a deep 
pentapetalous concavity, which at the inner side of the calyx is represented 
by a short cone, rounded at the upper end. First costals twice as wide 
as long, the suture lines convex; the second a little longer, their sloping 
upper faces at right angles. The first distichals in contact laterally, some- 
what smaller than the upper costals, wider than long, the upper face con- 
cave; the second much smaller, and the arm-bearing palmars smaller still. 
First interbrachials almost as large as the radials, a little longer than wide, 
subrotundate in outline; the two plates above elongate, and together-much 
smaller than the first. The interdistichal very small, resting within a notch 
formed by the first distichals. The faces supporting the partition walls 
projecting considerably over those supporting the arms. The axillary costals 
and first interbrachials are extended into long, rather sharp spines, proceed- 
ing from the middle of the plates and directed obliquely upward. In addi- 
