SINCLAIR: MARSUPIALIA OF THE SANTA CRUZ BEDS. 359 



Seventh cervical, length of centrum ........ .027 



" width of posterior face of centrum . . . . . .0185 



" " depth " " " " " 0185 



" width across transverse processes . . . . . .053 



" prezygapophyses ...... .034 



First dorsal, length of centrum. ........ .024 



" width of posterior face of centrum ...... .024 



" " depth " ,, , 73 



" " width across diapophyses ....... .054 



Seventh ? dorsal, length of centrum ........ .023 



" width of posterior face of centrum ..... .023 



depth " " " 0145 



" " width across diapophyses. ...... .038 



" " greatest width of neural spine ...... -0135 



" " length of neural spine ....... .056 



Eighth ? dorsal, length of centrum ........ .0226 



" width of posterior face of centrum ..... .025 



" " depth " " " " " 0145 



Third ? caudal, length of centrum ........ .025 



Fourth? " " " " 0237 



" width of posterior face of centrum . . . . . .017 



" " depth " " " " " 013 



" " width across transverse processes ..... .056 



Fifth? " length of centrum 0238 



" " width of posterior face of centrum ..... .017 



" " depth " " nun 0136 



" " width across transverse processes (approximate) . . . .048 



Scapula, length ........... -1378 



" width of neck .......... .025 



" antero-posterior diameter of glenoid cavity, including coracoid process .0345 

 " transverse diameter of glenoid cavity ...... .022 



Radius, length ........... .1265 



" width at proximal end . . . . . . . . . .018 



" " distal " 0228 



Ulna, length 165 



" greatest width of olecranon process ....... .024 



" " " below sigmoid cavity ...... -0305 



Femur, length ........... -1745 



" width at proximal end ......... .049 



" " distal end 036 



Second rib, length .......... .066 



Metacarpal II, width at proximal end . . . . . . . .012 



" III, " " distal " 0115 



IV, length .0435 



" " width at proximal end ...... -Oi I 



" " " " distal " 012 



