PLATE 95, 
AULACOPHYLLUM SULCATUM. Devonian. 
1. Anterior, or central-gap view and view of the calyx of a corallum, 
from the Middle Devonian rocks, Falls of the Ohio. 
2. Left lateral view of a weathered corallum, from the Middle Devo- 
nian red clay, near Louisville. 
3. Posterior, or apertural-gap view of a weathered corallum, from the 
Middle Devonian red clay, near Louisville. 
[Nore.—-The arrangement of the lamelle about the line of the apertural-gap may be observed.} 
AULACOPH YLLUM PARVUM, Nov. Spec. Devonian. 
4, View of the central-gap line and of the calyx of a corallum, from 
the red clay of the Middle Devonian, near Louisville. 
AULACOPHYLLUM UNGULOIDEUM, Nov. Spec. Devonian. 
5. View of central-gap line and of the calyx of a corallum of medium 
size, from the Lower Devonian rocks, Falls of the Ohio. 
[Nore.—In this specimen are conspicuously shown the four gaps proper to Cyathophylloids, and 
the consequent fascicular grouping of the lamelle.] 
6. Similar view of a corallum, in which the central and lateral gaps 
are obscure, but showing the lamella occupying the center of the 
apertural-gap fovea. 
7. Left lateral-gap view of a corallum (prone). This and example 6 
are from the same horizon and place as example 5. 
[Nore.—The arrangement of the lamella about the line of the left lateral gap is noticeable.] 
8. View of the calyx of a weathered corallum, from the Lower Devo- 
nian ferruginous clay, near Louisville. 
(Notz.—In this example some of the lamellae beyond the lateral gaps remain erect, and by their 
co-incidental meeting have the appearance of continuous plications from opposite margins of the wall.] 
AULACOPHYLLUM INSIGNE. Devonian. 
9. View of the central gap and of the calyx of a corallum, whose 
lamellee are fortuitously broken down in the calyx bottom. From 
the manganese limestone of the Lower Devonian, Falls of the 
Ohio. 
The examples are from the collection of the author. 
