46 OREODON. 
Inches. Lines. 
Depth below the hinder portion of the lower middle premolar : ; 5 1 
Length of entire series of upper teeth . 4 8 
Length of entire series of lower teeth . t 4 
Length of series of upper molar teeth . 3 4 
Length of series of lower molar teeth . 3 3 
Length of series of upper true molar teeth . 1 10 
Length of series of lower true molar teeth 2 
Antero-posterior diameter of last upper molar.  eskit é c z 9 
Antero-posterior diameter of last lower molar : : : : 5 3 11 
Length of crown of the canine teeth : ; - : Z : : 7 
Extent of hiatus behind the upper canine —. : : : ; ‘ : 3 
Extent of hiatus between canines and incisors : ; 3 3 j - 13 
2. A very much mutilated skull, with the zygomata, upper superficial portion of 
the face, orbital margins, and rami and greater portion of the base of the lower 
jaw broken away. ‘The specimen 
is very much fissured, apparently from exposure 
to the weather since its exhumation. All the teeth, except the crowns of the 
canines and incisors, remain on both sides. 
The form, proportions, and size 
that first indicated. 
of the specimen correspond pretty closely with 
From Messrs. Culbertson’s collection. 
Length of head from occipital condyles to the anterior incisive alveoli 
Breadth of face at infra-orbitar foramina 
Breadth of face above first premolar 
Breadth of face at roots of incisors just in aeons of the upper canines 
Height of symphysis of lower jaw 
Depth of lower jaw below second premolar . 
Length of series of upper molars 
Length of series of lower molars 
Length of series of upper true molars 
Length of series of lower true molars 
MEASUREMENTS. 
Inches. Lines. * 
5 
8% 
(6; 
25 
7 
2 
- 5 
93 
11 
et 
3. A much broken anterior portion of a skull, agreeing very closely in its form 
and proportions with the corresponding part of the preceding specimens. 
From Capt. Van. Vliet’s collection. 
MEASUREMENTS. 
Inches. Lines. 
Breadth of face at infra-orbitar foramina. 2 : : : : el 9 
Distance from the latter to the frontal angular processes 1 4} 
Length of series of upper molars 3 5 
Length of series of lower molars 3 4 
Length of series of upper true molars 1 9 
Length of series of lower true molars 2 
4. An anterior portion of a skull containing all the true molars and one last pre- 
molar, with fragments of the others. It is accompanied by a portion of lower jaw 
containing the last premolar and the succeeding two true molars. 
Se 
