PLATE 69. 
SYRINGOPORA TUBIPOROIDES. Devonian. 
1. Oblique view of the Upper surface of a corallum from the ferruginous 
clay of the Lower Devonian, near Louisville. Collection of the 
author. 
2. Upper surface of a corallum from the Lower Devonian rocks, Falls 
of the Ohio. Collection of Mr. Gaines. 
3. Basal expansion incrusting Favosites emmonsi, from the. Lower De- 
vonian red clay, near Louisville. Collection of Mr. McConathy. 
SYRINGOPORA PERELEGANS. Devonian. 
4. Oblique section of a corallum from the upper strata of the Lower 
Devonian group of rocks, Falls of the Ohio. Collection of the 
author. 
5. Variety (inverted) from the same locality as example 4, but whose 
horizon is a little higher, showing more widely separated corallets, 
and more remote processes of connection. Collection of the author. 
