PATAGONIAN EXPEDITIONS : PALAEONTOLOGY. 
M-&-, antero-posterior diameter ...... 
.015 
“ transverse “ ...... 
.0105 
M-i, antero-posterior “ ...... 
*- n 
TLTJ 
0 
q 
“ transverse “ ...... 
.0085 
Lower canine, antero-posterior diameter at alveolar border . 
.0163 
“ “ transverse “ “ “ “ 
.0112 
Anterior inferior premolar, antero-posterior diameter . 
.009 
“ “ “ transverse “ 
.005 
Median “ “ antero-posterior “ (approximate) . 
.0117 
“ “ “ transverse “ 
.006 
Posterior “ “ antero-posterior “ 
.0143 
“ “ “ transverse “ 
.0065 
M t , antero-posterior diameter ...... 
.012 
“ transverse “ 
.006 
Mg, antero-posterior u ..... . 
.012 
“ transverse “...... 
.007 
Mg-, antero-posterior 
.013 
“ transverse “ 
.0075 
M ? , antero-posterior “..... . 
.016 
“ transverse “...... 
.009 
Atlas, transverse breadth ....... 
.0805 
“ breadth across anterior cotyles .... 
.0498 
“ width of neural arch ...... 
.022 
“ “ “ intercentrum including median process 
.0145 
Axis, length of centrum, including odontoid 
.052 
“ width of posterior face of centrum .... 
.0195 
“ depth “ “ “ “ “ .... 
.015 
“ length of odontoid ....... 
.01 1 
“ width across anterior cotyles ..... 
•039 
“ antero-posterior diameter of neural spine . 
.0745 
“ height of spine above floor of neural canal 
.042 
Third cervical, length of centrum ..... 
.026 
“ width across transverse processes (approximate) 
.061 
“ “ “ “ prezygapophyses 
•0335 
Fifth cervical, length of centrum ..... 
.027 
“ width of posterior face of centrum 
.0195 
“ “ depth “ “ “ “ “ 
.0182 
“ “ width across transverse processes . 
•053 
“ “ “ prezygapophyses 
.040 
antero-posterior diameter of inferior lamina of transverse process 
•0335 
Sixth cervical, length of centrum ..... 
.028 
“ width of posterior face of centrum 
.0183 
“ “ depth “ “ “ u 
•0175 
“ width across transverse processes (approximate) 
.044 
“ “ “ prezygapophyses 
•0335 
antero-posterior diameter of inferior lamina of transverse process 
.029 
