14 
AUG. F. FOEESTE 
Judging from the fragments at hand, the basal part of the 
calyx must have been comparatively flat as far outward as the 
distal parts of the first interradials. Beyond the latter, the 
sides of the calyx probably curved more or less rapidly upward, 
producing a semi-globose form, flattened beneath, possibly 
similar to that of Lyriocrinus. The lateral diameter of the 
calyx must have equalled at least 60 mm. Obscure lines of 
elevation traverse the plates somewhat as indicated in figure 6E. 
Locality and ^position. Within 2| feet from the top of the 
Brassfield limestone, 7 miles northwest of Xenia, Ohio. The 
locality may be reached by going 1 mile east from Byron, then 
1 mile south, to a shallow wet-weather stream exposure, on the 
east side of the pike. 
Base of calyx of unknown species of crinoid 
Plate VI, figs, 2 A-D 
At the same locality and horizon as the preceding species, 
southeast of Byron, Ohio, occur the basal parts of the calyces 
of a second species of crinoid, closely resembling the preceding 
species in general appearance. The chief difference consists in 
the fact that there is no differentiation of the anal side among 
the basals, nor, apparently, among the radials and first inter- 
radials, as far as the latter are preserved. All of the basals are 
pentagonal in outline. The articulating surface for the attach- 
ment of the column is similar to that of the preceding species. 
If infrabasals ever were present, this fact remains to be proved. 
The plates of the calyx are ornamented by close-set parallel 
striae arranged in groups which are perpendicular to the adjacent 
suture lines. In intermediate parts of the plates these striae 
tend to break up into series of granules which are elongated more 
or less in the direction of the neighboring striae. The general 
form of the calyx probably was similar to that of Lyriocrinus 
melissa Hall. 
This second species appears so closely similar to the preceding 
species here described, as far as preserved, that there is a possibility 
of both belonging to the same family of crinoids. All the Dimero- 
