CORALS OF THE CINCINNATI GROUP. 223 



description are really distinct from T. fibratum, Safford, or not ; but I 

 have thought it best to keep them separate in the meanwhile, since they 

 agree with T. minus, and differ from the former species in the small size 

 of the corallites, of which three or four occupy the space of one line. 

 Our specimens also differ from T. fibratum in the greater closeness of the 

 tabulae, these structures being constantly present, and being very con- 

 spicuous. On the other hand, the peculiar septa of the genus are only 

 occasionally recognizable in polished transverse sections. 



Position and locality: Upper beds of Cincinnati group, Lebanon, Waynesville, 

 etc., Ohio. From the collections of Prof. Edward Orton and Mr. U. P. James. 



