392 
PATAGONIAN EXPEDITIONS : PALAEONTOLOGY. 
In the type skull, there are but three molars on the right side, where 
M- is wanting. This tooth is present on the opposite side, where it is 
proportionately no more reduced than in C. lustratus . 
The broad, blunt points of the upper canines are the result of fracturing, 
and are not characters of specific importance. 
Measurements. 
r to M4- (approx 
Skull, width across jugal arches (approximate) . 
Face, length, premaxillae to anterior border of orbit 
Cranium, width at postorbital constriction 
Nasals, length (approximate) 
“ width anteriorly . 
“ “ posteriorly . 
Palate, length . 
“ width between canines 
“ “ “ posterior premolars 
“ “ “ Mi . . 
Upper dentition, length from median incisoi 
“ “ “ of premolar series 
“ “ “ “ molar “ 
Upper median incisor, width of crown 
“ lateral “ “ “ 
Upper canine, antero-posterior diameter at alveolar border 
“ “ transverse “ “ “ “ 
Anterior superior premolar, antero-posterior diameter. 
“ “ “ transverse 
Median “ “ antero-posterior 
“ “ “ transverse 
Posterior “ “ antero-posterior 
“ “ * “ transverse 
Mi, antero-posterior diameter . 
“ transverse “ 
Mi, antero-posterior “ 
“ transverse 
Mi, antero-posterior 
“ transverse “ 
Mi, antero-posterior “ 
“ transverse “ 
Atlas, width across anterior cotyles 
“ “ of neural arch 
“ “ “ inferior “ 
Eleventh dorsal, length of centrum 
“ width of posterior face of centrum 
<< << depth iC ii f< ii 
<( 
<( 
imate) 
.090 
.060 
.01 1 
.057 
.009 
.026 
.076 
,014 
.020 
•037 
.079 
.032 
.0245 
.0012 
.0018 
.010 
.007 
.006 
.0025 
.0085 
.003 
.0085 
.0038 
.007 
.005 
.0078 
.006 
.0088 
.007 
.003 
.007 
•035 
.016 
.009 
.0175 
.0165 
.010 
