374 PATAGONIAN EXPEDITIONS I PALAEONTOLOGY. 



Third cervical, width across transverse processes ..... .050 



" " " " prezygapophyses . . . . . . .0315 



Fourth cervical, length of centrum ........ .025 



" " depth of posterior face of centrum ..... .014 



" " width " .<<.< , 9 5 



" " " across prezygapophyses ...... .038 



Fifth " length of centrum ........ .025 



Seventh dorsal, length of centrum ........ .021 



" depth of anterior face of centrum . . . . . .014 



" " width " 0165 



" " width across diapophyses . . . . . . .040 



" " " of neural spine . . . . . . . .010 



Tenth dorsal, length of centrum ........ -0235 



" depth of anterior face of centrum . . ... . .014 



" " width ".'" 020 



Eleventh dorsal, length of centrum ........ -0235 



" " depth of anterior face of centrum . . . . . .016 



" " width " " 022 



" " " " neural spine . . . . . . . .016 



" " " across anapophyses ...... .027 



Twelfth dorsal, approximate length of centrum ...... .0235 



" depth of anterior face of centrum . . . . . .016 



" width " " " 022 



" " " of neural spine . . . . . . . .013 



" " " across anapophyses ....... -0275 



Fourth lumbar, length of centrum ........ .0345 



" " depth of anterior face of centrum ..... .018 



" width " " " " 0225 



" " " " neural spine ....... .0165 



" " " across prezygapophyses ...... .030 



" " " of transverse process at base . . . . . .015 



Fifth lumbar, length of centrum . . . . . . . . .0335 



" " depth of anterior face of centrum . ..... .0185 



width " ". 0235 



" " " " neural spine . . . . . . . . .0155 



" " " across prezygapophyses . . . . . . .033 



" " " of transverse process at base . . . . . .015 



Sixth lumbar, length of centrum ..... . . .033 



depth of posterior face of centrum . . . . . .0185 



" width " 029 



" " " " neural spine 015 



" " across prezygapophyses ...... .034 



" " " of transverse process at base ..... .016 



Sacrum, length of centra .......... -0505 



width at point of greatest expansion of auricular processes . . .061 

 depth of anterior face of centrum of first sacral .... .018 



