S. Lyon and 8. A, Casseday on new species of Crinoidea. 238 
Art. XXIX.—Description of Nine new species of Crinoidea from 
the Subcarboniferous Rocks of Indiana and Kentucky; by SiDNEY 
Lyon and S. A. CassepaY. : 
Ir was our intention originally, to publish the description of 
these, and other western Crinoidea, in the fourth volume of the 
Report on the Geology of Kentucky; but as many of our new 
and most interesting fossils find their way to the cabinets of’ 
European paleontologists and are described by them in conti- 
nental journals, we determined to lay before the public the results 
of our labors at the earliest possible moment. We have draw- 
ings of all the species described, which we will publish sometime 
uring the winter of the present year. 
GONIASTEROIDOCRINDS, n. g., Lyon and Casseday. 
Generic Formula. 
to 9. 
Arms, 5, nearly round, com of about seven rows of small 
hexagonal pieces resting midway between the primary radials 
each side of them severally. Non ciliate. The interbrachial 
a support long, pendulous cilia, from five to seven in each 
e a 
Summit, pentagonal, composed of numerous polygonal pieces, 
Fome of %y ich Bin pained “folds enclosing fields of smaller 
Pieces. “Mouth depressed, sub-central. 
lumn, round, stout, composed of thin pieces alternately 
larger and smaller, the larger are the thickest. 
The generic name was suggested to us by the resemblance of 
the summit to a Gonias oy 
Body, general form subeylindrical, or like a rounded pentagon, a little 
higher than wide, base deals excavate. Summit plane or slightly eleva- 
near the centre; the first radials are prolonged downwards and out- 
wards into a spinous process. cee eer eg Teter = 
b mh 7 ae forming together a regular pentagon ; nearly covered 
Y the supra columnar piece. ee Si) Se 
Subradials five, ret hexagonal, nearly equal in size, joined together, 
te Margin presents four angular, and five plain margins between the 
1859. 
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