C’ORYPHODOK 
227 
median posterior cariniform heel. The descending anterior cingulum, or 
crest, is well developed on all of the true molars, and the heel on the last 
two. This is, on the last molar, uninterrupted, and descends from the inner 
to the outer side, commencing within, opposite the middle of the cusp. 
The crests had not, when unworn, the relative elevation seen in the 
C. radians and C. latidens, and the space between them is relatively greater. 
The entire crown is narrower posteriori}’ than anteriorl}^ The enamel is 
nearly smooth. 
An obtusely truncate osseous fragment was found attached to the 
superior posterior angle of the cranium. I cannot now attach it in place, 
owing to the loss of intermediate fragments; but a sketch which I took on 
the spot indicates that it projected, like a free and flattened horn-core, back¬ 
ward in the position of the lateral occipital crest in the 0. elepliantopiis and 
in LoxoJophodon. It therefore projected in a vertical plane considerabh^ 
beyond the line of the occi}>ital condyles. Its free end is somewhat 
thickened. 
Measurements. 
M. 
Depth of the premaxillary bone at tlie second incisor tooth ... 
Lenigth of the premaxillary bone from the maxillary, including two alveoli.... 
Diameter of the alveolus of the first incisor. . 
Diameter of the base of the crown of the canine 
autero posterior 
transverse . 
Length of the bases of the posterior six superior molars. 
Length of the bases of three premolars.... 
Length of the penultimate molar... 
Width of the same . 
Length of the last molar. 
AVidth of the same... 
Length of seven inferior molars. . . 
Length of fhree inferior true molars . 
Length of the i)ennltimate molar... 
AVidth of the same... ... 
Length of the last molar.... 
AVidth of the same in front. 
AVidth of the same posteriorly. 
Elevation of the inner posterior cusp. 
Depth of the ramus at the last molar. . 
Dei)th of the ramus at the last premolar... 
Vertical diameter of the lateral occipital protuberance.. 
Q'ransverse diameter. . 
0. 032 
0. 030 
0. 015 
0.017 
0.018 
0.120 
0. 051 
0. 020 
0. 033 
0. 020 
0. 030 
0. 154 
0. 081 
0. 020 
0.018 
0. 034 
0. 021 
0. 017 
0. 014 
0. 008 
0. 084 
0. 003 
0. 024 
