PLATE 5. 
CoLumnopora RAYI, Nov. Spec. Hudson River Group. 
1. Upper surface of a corallum found in Nelson county. Collection of 
the author. 
3. Lateral view of a corallum from the same locality. Collection of the 
author. 
CoLUMNOPORA CRIBRIFORMIS. - Hudson. River Group. 
2. Lateral view of a corallum found in Nelson county. 
4, Upper surface of a corallum from the same locality. Collection of 
the author. 
5. View of the under surface of a corallum from which the epitheca has 
been removed, showing diaphragms and mural pores; from Nelson 
county. Collection of the author. 
