SKELETON OF QUADRUMANA. 



523 



346 



tliirteentli dorsal answering to the first lumbar in Man, with the 

 pleurapophyses retained as distinct elements. The bodies of the 

 middle dorsal vertebras 

 are shorter in propor- 

 tion to their breadth; 

 the diapophyses are 

 thicker, stand more di- 

 rectly outward, and the 

 costal surfaces are 

 more concave and ob- 

 long than in Man ; the 

 metapophysis, which 

 projects distinctly in 

 the eleventh vertebra 

 in Man, does not so 

 appear until the twelfth 

 in the Gorilla. In the 

 first dorsal the diapo- 

 physis projects directly 

 outward ; the propor- 

 tionate increase of the 

 centrum is greater than 

 in Man ; the neural 

 spine is less obliquely 

 bent baclvAvard, and is 

 thicker antero-posteri- 

 orly, though not lon- 

 ger; the anterior zyga- 

 j)ophyses are more pro- 

 duced; the diapophyses 

 are broader and some- 

 what shorter. In the 

 eleventh dorsal the 

 neural spine is much 

 expanded at its extre- 

 mity. In the twelfth, 

 there are distinct and 

 well-developed meta- 

 pophyses, projecting 

 from the fore part of 

 the diapophyses, and 



OVerhano;ino: the ante- Gorma. Clrogludylcs GonlUO. cm-. 



rior zygapophyses : this vertebra corresponds in this character 



