PLATE 29. 



Favosites canadensis. Devonian. 



1. 2. Upper surface of fragments of coralla having the common form, 

 from the Lower Devonian, Falls of the Ohio. Collection of the 

 author. 



3. Lateral view of a corallum of rarely digitate growth, from the hori- 

 zon and locality of the preceding examples. Collection of the 

 author. 



