52 OREODON. 
+ 
20. Fragments of the upper and lower jaw, the former containing the last two 
molars, the latter the last three molars. Upon these was originally established the 
Merycoidodon Culbertsonii, in the Proceedings of the Academy of Natural Sciences 
(vol. iv. p. 47. Plate: Figs. 1-5). 
The specimens were collected by Mr. Alexander Culbertson, and presented to 
the Academy of Natural Sciences by his father Mr. Joseph Culbertson. 
Average Measurements of Specimens of OREODON CULBERTSON; but principally taken 
fron the female head represented in Plates II. and IV. Figs. 1, 2. 
Inches. Lines. 
Length of skull from occipital condyles to incisive alveoli in the female . 
Length of skull from occipital condyles to incisive alveoli in the male 
Length of face from antero-orbital margin to incisive alveoli . 
Length from post-glenoid tubercle to incisive alveoli 
Length from hinder part of last molar to incisive alveoli 
Length from inion to coronal suture 
Length from coronal suture to end of nose . 
Leneth of os frontis at middle 
Greatest breadth of skull at zygomata . : 
Greatest breadth at inter-temporal region, near maale ; 
Least breadth at coronal suture 
Breadth at middle of post-orbital arches 
Breadth of face above last molar 
Breadth of face above first premolar 
Breadth of face at infra-orbitar foramina : 
Breadth between ends of frontal angular processes 
Breadth of each nasal bone 
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Vertical diameter of the orbit 1 
Transyerse diameter of the orbit i 
Greatest length of lower jaw 6 2 
Height of lower jaw at coronoid process 3 3 
Height of lower jaw at condyle . 2 9 
Height of lower jaw at last molar il 7 
Height of lower jaw at second premolar 1 1. 
Length of series of upper molars 8 4 
Length of series of lower molars 3 3 
Length of series of upper true molars 1 10 
Length of series of lower true molars 2 
Antero-posterior diameter of last upper molar 9 
Antero-posterior diameter of last lower molar 11 
Antero-posterior diameter of penultimate lower molar . . : : : i 
Antero-posterior diameter of upper premolars - 2 : ; : : 5 
Antero-posterior diameter of lower premolars . : : : : 54 
Length of crown of upper canine ; : 2 : : mae 9 lines; female 7 
Length of crown of lower canine 3 5 ‘ ‘ : : : : 6} 
Breadth of lateral series of upper incisors . ; : , : 5 ; 7% 
Breadth of lateral series of lower incisors. 5 ; : 5 6 : 9 
Length of crown of upper internal incisor . 5 : : 3 : : 34 
Length of crown of upper lateral incisor . — . : 3 : ° é 4} 
Length of crown of lower internal incisor . : ‘ : 5 ‘ ae 32 
Length of crown of lower lateral incisor . : : . : : ; 5 
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