482 Prof. O. C. Marsh—Restoration of Coryphodon. 
the discovery and disposition of the specimens found. Prof. Cope, 
in 1872, gave the name Metalophon to a specimen from another 
locality in Wyoming, and subsequently (1873-1875), in several 
papers, and under the above generic names, described various 
remains from Wyoming and New Mexico. He also gave figures 
of a molar tooth, the hind foot, and a skull, all of which he referred 
to his genus Bathmodon. 
In the meantime, the writer had been investigating remains of 
the same group from Wyoming and New Mexico, including portions 
of the original specimen found by Mr. Cleburne, and other material 
of much interest. It was soon ascertained (1) that all these remains 
were apparently identical with those of the genus Coryphodon, 
Owen, as described and figured by him and Hébert; and (2) that 
the geological horizon of these fossils was essentially the same both 
in America and Hurope. An investigation was made of the skull, 
and especially of its brain-cavity, the latter indicating a brain of 
very inferior type. The feet proved to be of a primitive form, the 
manus and pes each having five very short functional digits. The 
remains studied belonged to a new family, named by the writer the 
Coryphodontide. ‘These and other results were brought together in 
a paper entitled. “On some Characters of the genus Ooryphodon, 
Owen,” and in it were given figures of the skull and the brain- 
cavity of a new species, Coryphodon hamatus. This paper was 
published separately, April 15th, 1876, and subsequently appeared 
in the American Journal of Science, vol. xi. p. 425, May, 1876. 
Subsequent to the publication of these determinations by the 
writer, Prof. Cope admitted, in several papers, the reference of these 
remains to the genus Coryphodon, and the identity of the horizons 
in this country and Europe in which they were found, but without 
referring to the above article on the subject. He likewise described 
in detail, and figured, in 1877, what he considered a brain-cast of 
Coryphodon, but again without any reference to the paper in which, 
the year before, the writer had given accurate figures of the brain- 
cast of that genus. In the specimen described by Prof. Cope, the 
eribriform plates of the brain-case were apparently wanting, so that 
in the cast figured the olfactory lobes appear to extend far forward, 
thus giving a wrong idea of the original brain.” 
In the same year, 1877, the writer published a second article 
under the title, ‘‘ Principal Characters of the Coryphodontide,” in 
which he gave more in detail a description of the skull and brain- 
cast of Coryphodon, with a figure, and also the main facts in regard to 
the skeleton. The feet of this genus, before practically unknown, 
were described and figured, and especially compared with those of 
Dinoceras, which were also represented for comparison.? In Woodcut, 
Figs. 2 and 8, of the present article, the original figures of the feet of 
1 British Fossil Mammals and Birds, p. 299, 1846; and Annales des Sciences 
Naturelles, tome vi. p. 87, 1856. 
* Proc. Amer. Philos. Soc. vol. xvi. p. 616, plates ii. 1877. See also Amer. 
Naturalist, vol. xi. p. 312, and 375, 1877 ; and Nature, vol. XVil. p. 340, 1878. 
3 American Journal, vol. xiv. Pp: 81, plate i iy. July, 1877. 
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