1873.] 215 , Cope 



Measurements. M. 



Length axis along basis neural arch 021 



Elevation crest (rectangular) from posterior zygapo- 



physis 036 



Length parapophysis of fifth cervical on margin 051 



Extent zygapophyses " " " 048 



Expanse " " " « behind. .044 



Elevation neural spine of C. 6 056 



" C. 7 075 



Length centrum below " " 028 



Diameter of cup, about 032 



The measurements indicate that the neural spines of the sixth and- 

 seventh are quite elevated, the latter nearly equal to that of the first 

 dorsal. 



The spines of the dorsal vertebrae are elevated in the front of the serie s 

 rising some distance above the scapulae. They shorten and widen rapid ly 

 from the middle of the series backwards. The extremities of all from 

 the scapula posteriorly are turned forwards. The metapophyses are con- 

 spicuously elevated above the diapophysis on the eleventh dorsal, and on 

 the eighteenth, their elevation is about .4 that of the neural spine. The 

 diapophysis is extended beyond the tubercular articulation, on the 18th 

 dorsal ; the extension and expansion increases rapidly on the lumbars. 

 On the fourth they are as wide at the base as .66 the length of the cen- 

 trum and maintain their width, being directed, anteriorly. On the sixth 

 and seventh they are still wider and longer, and very thin. They present 

 a projecting transverse surface backwards one -fourth the length from the 

 base for articulation with the seventh lumbar and first sacral respectively. 

 The centra of the lumbars are depressed and slightly opisthoccelian, ex- 

 cept the last, which is flat. They are contracted and keeled below. 



The sacrum is long and narrow, and thoroughly coossified in the speci- , 

 men. The diapophysis of the first and part of that of the second gives 

 attachment to the ilium. The intervertebral foramina are rather small. 



Measurements. M. 



Length of dorsal vertebrae along middles of neural 



spines 409 



" of lumbars do 298 



of sacrum along centra 170 



Diameter centrum first dorsal (transverse) 019 



" " " (vertical) 019 



" " fifth lumbar " 020 



" " (transverse) 0325 



Length do 039 



" diapophysis sixth do 065 



Greatest transverse width of diapophysis sixth lumbar. .03!) 

 Length centrum seventh lumbar 034 



