RETEOCRINIDE. 187 
them narrower above than below; the succeeding ones are a little smaller 
than the costals. Ventral disk not visible in the specimens. Column com- 
paratively large and obscurely pentagonal, the nodal joints larger, and with 
slightly undulating edges. 
Horizon and Locality. — Upper part of the Hudson River group, Warren 
Jor,.0: 
The ¢ype specimens, which are in our collection, were presented to us by 
Dr. 8. 8. Scoville of Lebanon. 
