851 



5454. The twelfth dorsal vertebra. 



The costal surface has now wholly passed upon the extremity of the short and thick diapo- 

 physis : the metapophysis and anapophysis are distinct from this. 



As compared with the twelfth dorsal of the Australian, besides a considerable inferiority of 

 size, the costal surface is on the side of the neurapophysis, and has not ascended upon the 

 tubercle which represents the diapophysis, as in No. 5204. 



5455. The first lumbar vertebra. 



The anapophysis and metapophysis have subsided to tubercles, and the diapophysis is elon- 

 gated by the extension of ossification into the fibro-cartilaginous basis of the pleurapophysis. 



In the Australian the metapophysis is relatively longer, the diapophysis smaller, and the 

 tubercles on the back of the posterior zygapophyses are less developed. 



5456. The second lumbar vertebra. 



5457. The third lumbar vertebra. 



The upper part of the neural arch has been, probably after fracture, moveably articulated 

 with its piers or bases. The anapophyses are well developed. 



5458. The fourth lumbar vertebra. 



That of the Australian differs in its much shorter diapophyses. 



5459. The fifth lumbar vertebra. 



The shortened and much thickened diapophyses present an articular surface for the pro- 

 duced angles of the sacrum. 



5460. The sacrum. 



It is larger and broader in proportion to its length than in the Australian (No. 5210) ; it 

 is also more concave anteriorly. The neural arch is left open and incomplete in all the ver- 

 tebrae, whilst in the Australian the neural arch of each of the three anterior sacral vertebrae 

 is completed and supports a spine. 



5461. The first pair of thoracic ribs. 5462. The second pair of thoracic ribs. 



5463. The last pair of thoracic ribs. 



5 Q2 



