ANATOMICAL STEUCTUEE OF ANTHROPOID APES. 77 



The orbits of the orang, which are sometimt-s 

 rounded, sometimes more square, are divided from 

 each other by a narrow partition. The space be- 

 tween them and the anterior nares is not so 

 great as in the gorilla. While in the last-named 

 animal the space between the root of the nose and 

 the teeth of the upper jaw-bone is convex, in the 



Fig. 22. — Skull of middle-aged female orang. 



chimpanzee it is generally vertical, and in the orang 

 it is depressed (Fig. 22). The maxillary parts, 

 furnished with strong canine teeth, are very prog- 

 nathous, yet hardly to the same extent as in the 

 chimpanzee. The body of the lower jaw is high, 

 and its rami are high and wide. The bony crests 

 of which we have spoken are absent in the female. 



