CORYPHODON. 
213 
the inferior anterior tuberosity is not prominent. Depth at tliat point, 
0“.045. This specimen, like the last, was adult. 
.The remains of the third specimen were found strewn over a consider¬ 
able extent of a slope of the bad-lands, where the waters of erosion had 
scattered them either directly or by the undermining of the bed in which 
they had lain. The little ravines, whose divergent courses mark the lines 
of drainage, abounded in the fragments, while a few yet remained project¬ 
ing along the crests of the dividing ridges. The marl has at this spot a red 
color, and all the bones partake of it. A more remarkable example of 
breakage I have seldom seen. The long bones were broken into short 
sections as though sliced with a knife, and many of the fragments were 
fractured as though in cleavage-planes. The pieces, collected in packages 
as they were found lying, form a considerable bulk; but I have not had 
the success I had anticipated in reuniting them. It is, however, evident 
that two animals are mingled in this mass; the largest of which I refer to 
the C. radians^ referring to the teeth, which I found in close juxtaposition, 
as the representative portions. 
The teeth agree in technical characters very closely with those of the 
type, and the specimens above described, with one exception. The poste¬ 
rior cingulum, or heel, has the same reduced proportions and the crests the 
elevation. The anterior descending crest is strong, and there are no cin¬ 
gula ; but, instead of the enamel being smooth, it is everywhere marked 
with delicate flame-like ridges. The animal is younger than those just 
described, but not more so than the type, the crests being worn, as in the 
latter, by attrition, which has just reached the dentine. A trace of the 
rugosity only exists in the type-specimen, so that it must be regarded as a 
strong individual peculiarity of the present animal. The inferior canine is 
a much larger weapon than that of the type, but not larger than that of a 
second specimen, also from Wyoming. The inner face is flat, and the 
remaining surface strongly convex. The antero-interior margin is produced 
into an aliform ridge; the postero-interior margin consists proximally of 
two angular ridges separated by a groove. This ridge is simple in the type 
of C. latidens. The crown is curved upward and a little outward. A supe¬ 
rior first molar resembles strongly one from the locality of the Wyoming 
