CORYPHODON. 
241 
Coryphodon No. II. 
Plate Iviii, fig. 9; Plate lix; Plate lx. 
A number of elements of a skeleton of a Coryphodon were found in the 
bed from which the C. latidens and C. molestus were obtained. They were in 
immediate association with the bones of the latter, all having- been taken 
out successively; those to be here described on the 16th and 17th of Octo¬ 
ber, 1874, those of C. molestus on the 22d and 23d, and those of C. latidens 
on the 24th. All of these are of a reddish color, and are invested with a 
thin coating of the matrix, which can rarely be removed without taking 
with it a part of the superficial layer of the bone. It is not certain that 
some of these bones may not belong to the C. molestus, but the different 
proportions of the fore foot show that the individual, and probably the 
species, are different. 
The remains in question include a left humerus, a left ulna and radius, 
and a left fore foot, which probably belong together; also a right femur and 
patella, a right tibia and fibula, and a right hind foot, which are parts of one 
limb; also a series of caudal vertebrae. The limb-bones are at some points 
distorted by pressure, but are elsewhere of normal form. 
The humerus displays the large greater and lesser tuberosities separated 
by the deep bicipital groove. This groove is defined on the shaft in front by 
the crest, which is not very prominent. The shaft is rather slender, giving a 
much more elongate form than in the American Tapir. The inner distal tuber¬ 
osity is not very prominent, and, on the posterior face, bounds the very deep 
olecranar fossa, which is not perforate. 
The ulna is preserved in its proximal half, which displays a narrow 
inferior face, except below the olecranon, where it speads out. The coro- 
noid process is the most elevated portion, and at its base the olecranon 
is compressed. Its superior surface rapidly descends to the transversely- 
expanded extremity. The outline of the extremity is obliquely rounded 
to the inner side. The radial facets are not separated by a notch. 
The fore foot exhibits all the carpal and metacarpal bones, many of 
them adherent and but little dislocated, and a number of the phalanges, 
including an unguis. Their forms have been already described under the 
head of the genus, and the measurements express their specific proportions. 
16 G K 
