548 OREODON OF NEBRASKA. 
SPRECES OT ORE OPDEN. 
OREODON CULBERTSONII. Leidy. 
(Tab. x., figs. 4, 5, 6; xiii., figs. 8, 4.) 
Merycoidodon Culbertsonii: Proc. Acad. Nat. Sci., vol. iv. p. 47; pl. figs. 1-5. 
Oreodon priscus: ib., vol. v. p. 238. 
Cotylops speciosa, ib., p. 289. 
Of this species, the head of which is about the size of that of the Newfoundland 
dog, there are the following specimens in the collection of Dr. Owen. 
1. A nearly entire head, wanting only the end of the nose, incisors and their alveoli, upper canines, 
the right zygoma and post-orbital arch, a small portion of the left zygoma, the posterior two-thirds of the 
sagital crest, and the angle of the right side of the lower jaw, to be complete. (Tab. x., 5,6.) From 
its relation of size with the specimen next designated, it is presumed to be the head of a female. 
ADMEASUREMENTS.* 
Lines 
sagan of face at infra-orbitar foramina, . ‘ m : ; 18} 
above first premolars, 15 
favs of face from infra-orbitar foramina tb wt: of ate angular pro- 
cesses of os frontis, . 
Breadth of nasal bones at the ends of the yi processes, . : . 8} 
— of series of superior molars, : : : : - 404 
inferior ae ? : : : 40 
“ - superior true molars, —. ; : : : 22 
ts inferior ‘ a ; ; : : ‘ 243 
2. A skull (Tab. x., 4), accompanied by a small fragment (Tab. xiii., 4) of the right side of the lower 
Jaw, containing the three true molars broken. The former has the end of the nose, zygome, and occipito- 
sagital protuberance broken away. The forehead is somewhat crushed, but otherwise, excepting fractures, 
without displacement of fragments, the specimen is pretty perfect. It contains all the molar teeth of 
both sides, the left canine, and the root of the right. j 
From the greater degree of robustness of this specimen, compared with that indicated in Number 1, it 
is presumed to be of a male individual. 
The face is more flattened above, and its transverse section has a more square appearance than in the 
female. 
The molar teeth are more robust than in the latter, and the canines are also more robust and project 
more outwardly. 
“* A short table of admeasurements is appended to the aes ge ofeach specinsen, so as to present the 
extent of variation in size in different individuals of the species 
