Prof. O. ©. Marsh—Restoration of Coryphodon. 483 
Coryphodon, as given by the writer in 1877, are repeated. The original 
ficure, also, of the skull and the brain-cast, given by the writer 
first in 1876, and again in 1877, is repeated below, Figure 1. 
In another publication (American Journal, vol. xiv. p. 354, 1877) 
the writer defined more fully the horizon in the lower Hocene in 
which the Coryphodontide had been found in this country, and 
named the deposits the Coryphodon beds. 
Fic. 1.—Outline of skull and brain-cavity of Coryphodon hamatus, Marsh; top 
view. About one-fifth natural size. 
Fie. 2.—Fore foot of Coryphodon; front view. 
Fie. 3.—Hind foot of Coryphodon; front view. Both one-third natural size. 
The most important publication of Prof. Cope on the Coryphodon- 
tide will be found in vol. iv. of the Wheeler Survey, published 
in 1877. The remains of a number of different forms, mainly 
from New Mexico, are described and figured, and the relations of 
the group to some allied mammals are discussed. In the following 
year, Prof. Owen published again on Coryphodon, in the Annals 
and Magazine of Natural History (vol. ii. p. 216, 1878), giving 
figures of some American forms. In various papers, Prof. Cope 
subsequently referred to the Coryphodontide, naming several supposed 
