MAC CURDY HUMAN SKULLS FROM GAZELLE PENINSULA. 19 



the root of the first upper premolars. The alveolar arch of 

 the upper jaw projects considerably beyond (in one case as much 

 as 12 mm.) the third molars. The percentage of first lower 

 premolars with anterior roots is high. The spina mentalis is 

 practically wanting, and the angle of symphysis, large. 



