190 
PATAGONIAN EXPEDITIONS : PALAEONTOLOGY. 
Thoracic 2, length of centrum 
width of anterior face 
“ over transv. proc. 
“ ant. -post, width of spine 
Thoracic 4, length of centrum 
width of anterior face 
“ over transv. proc. 
“ length of spine . 
Thoracic ?ll, length of centrum . 
“ width of anterior face 
“ over transv. proc 
“ length of spine 
Thoracic ?i6, length of centrum . 
“ width of anterior face 
i < H U il „ _ 1 i • 
spine at tip 
“ length of spine (fr. arch) 
No. 15,968. No. 15,000. No. 15,489. No. 15,967. No. 9192. 
•151 
Cervical 7, width over transv. proc. . 
.148 
.132 
Neck, length in straight line 
.285 
.300 
Thoracic 1, length of centrum 
.044 
•037 
•045 
“ width of anterior face 
.050 
.041 
.044 
“ “ over transv. proc. . 
.115 
.138 
“ ant. -post, width of spine . 
•034 
.032 
.032 
.044 
.047 
.088 
.124 
.046 
.048 
.120 
•035 
.048 
.048 
.101 
.280 
.048 
.041 
•057 
.104 
.050 
•045 
.132 
.044 
No. 15,492. 
Lumbar 2, length of centrum . . .050 .053 
“ width of anterior face . .035 .046 
“ length of spine (fr. arch) . .054 
Last lumbar, length of centrum . . .047 
width of anterior face . .055 
“ “ posterior face . .057 
No. 15,489 is remarkable for the massiveness of the cervical vertebrae 
and their thick spines ; unfortunately, these spines are all broken, so that 
their length is not determinable, but they were evidently much longer 
than in any of the other individuals. No. 15,967 is a large animal, 
which measures 128 mm. across the occipital condyles, and the third 
upper molar is 65 mm. in antero-posterior length by 44 mm. in trans- 
verse width. No. 15,489 is a very similar animal, of which the skull 
and teeth are not preserved, while No. 15,968, also a large individual, is 
represented by a considerable part of the skeleton. No. 15,492, on the 
contrary, is quite small, the lower series of grinding teeth measuring 
only 179 mm. in total length. 
