870 



5574. The axis. 



With the same superiority of size, it differs from that of the Esquimaux in the more back- 

 ward inclination of the transverse processes and the deeper notch between these and the 

 posterior zygapophyses. The spine is not so broad, but is higher. The notch between the 

 post-zygapophysis and diapophysis is less deep in the Australian than in the Esquimaux. 



5575. The third cervical. vertebra. 



In this, the character of the deeper notch between the zygapophysis and diapophysis is 

 repeated. The spine is longer and more slender. 



5576. The fourth cervical vertebra. 



The notch between the diapophysis and zygapophysis is wider than in the Esquimaux and 

 deeper than in the Australian. The spine is longer, and, as in the preceding vertebrae, is 

 unsymmetrically bifurcate. 



5577. The fifth cervical vertebra. 5578. The sixth cervical vertebra. 



5579. The seventh cervical vertebra. 







This shows a marked superiority of size over that of the Esquimaux, and still more so over 

 that of the Australian. The diapophyses are thicker and more produced: both, but especially 

 the right, are perforated by smaller foramina than those of the preceding cervical vertebrae. 

 Besides the increase of size, this vertebra differs from the preceding in the minor depth of the 

 anterior articular surface of the centrum, in the increase of that part transversely, and the 

 absence of any prominent plate from the costal part of the transverse process which now forms 

 simply the lower boundary of the arterial foramen ; in the greater length, breadth and thick- 

 ness of the diapophysial part of the same process ; and in the greater length and thickness of 

 the spine, which terminates in an obtuse enlargement notched behind but not bifurcate. The 

 posterior zygapophyses are also relatively larger. 



5580. The first dorsal vertebra. 



The diapophyses are longer, and less inclined upwards than in the Esquimaux or Australian, 

 and the aspect of the costal surface upon them is more directly downwards. In the Australian 

 it looks more outwards than in the Esquimaux. The ridge along the lower part of the same 

 process, here strongly developed, is feebly marked in the Esquimaux and is not present in the 

 Australian. The produced parts of the border of the anterior articular surface of the centrum 

 formed by the neurapophyses are more restricted to the upper and outer parts than in the 

 preceding vertebrae.. 



