74 SS. Lyon and 8. A. Casseday on new species of Crinoidea, 
species. The surface markings and proboscis (if one existed) are not pre 
served in any examples before us. ; 
The spaces between the radials supporting the arms are quite extended _ 
and present the férm of a Doric arch. os 
Geological Position and Locality—Sub-Carboniferous beds of Mont 
gomery county, Indiana. Rather rare. - 
Cyathecrinus hexaductylus, sp. nob. 
on specimens when in a good state of conservation. 
, Aadials—The first are large, wider than high, fitting into the retreat 
ing angles of the subradial pieces, equal in size; near the middle : 
“into a facet which is scooped out of the upper part of the face of the first 
: part of the face 5 | 
radials, and are bordered by a small emarginate plicature, slightly raised 
and reflected outwards. an . 
Anal pieces, two; the first is obscurely pentangular, the fifth tact . 
being hardly perceptible; it is hemmed in cntively BS the surrounding — 
pieces, much smaller than they are; the second is irregularly shaped, 
about the size of the subradials, and bears upon its upper edge an arm — 
i ] 
pieces, two quadrangular, the third axill , giving off two branche’ 
a are.longs tapering, composed of easels at of stout pieces — 
three branches give off at intervals on either side, long filamentous pe 
nul, which extend the full length of the arms. These are compos’ — 
of small pieces resembling those forming the arms, and are similarly 
Pet git There are five pairs, rising from the regular rays. From the a™ 
nses @ single, long, tapering arm, not bifurcated as the others are 
* To be given hereafter. 
