850 



5444. The axis. 



This is larger, has larger zygapophyses, and the under part of the centrum less compressed, 

 than in the Australian. In both the neural spine is broad transversely, with its angles bent 

 back. 



5445. The third cervical vertebra. 



The posterior zygapophyses are larger, the diapophyses thicker and more produced, and 

 the canal for the vertebral artery wider, than in the Australian. 



5446. The fourth cervical vertebra. 



The vertical diameter of the centrum is much greater than in the Australian. 



5447. The fifth cervical vertebra. 



5448. The sixth cervical vertebra. 5449. The seventh cervical vertebra. 



5450. The first dorsal vertebra. 



It differs chiefly in its longer and stronger proportions from that of the Australian. 



5451. The second to the sixth dorsal vertebrae. 



The parapophysis (or articular surface for the head of the rib) increases in size and distinct- 

 ness from the fourth to the sixth. These vertebrae differ chiefly from those of the Austra- 

 lian by the relatively greater size of the centrum and the stronger processes. 



5452. The seventh to the tenth dorsal vertebrae. 



They differ chiefly in their relatively larger centrum from those of the Australian. 



5453. The eleventh dorsal vertebra. 



It has a single surface for the head of the rib on each side, which has ascended from the 

 body upon the neurapophysis. The diapophysis is very short and obtuse : a metapop'hysis 

 of greater length extends from its upper and back part towards the zygapophysis. There is 

 a short anapophysis. 



