26 Cincinnati Society of Natural History. 



I)lates, the curves and shapes of the rays towards and at the ter- 

 mination, and the convexity of the body: and from A. piliiis, Hall, 

 the same variations may be stated, except the convexity in which 

 it resembles A. pileiis. 



Position and locality. Cincinnati (jrou[), near Lebanon, War- 

 ren county, Ohio. 



The accurate drawing and finely executed figure is by Mr. 

 Joseph J. G. Steddom of Lebanon, (). 



NOTK— This fine fos<iiI was described a number of years ago by Mr. U. P. James, 

 and publislied witlinut a figure Tlie beautiful engraving by Mr. :>teddom has been of- 

 fered to the publishinj; Committee anrt is now presented to the public with ihe original 

 description, as a contribution to the paleontology of the Cincinnati Group, -lidiior- 



