THE SKELETON 59 



This so-called processus frontalis is remarkable on account of its 

 more frequent occurrence in the lower races, such as Negroes, 

 Australians, and Veddahs (according to the Sarasins it occurs in 



FIG. 39. SKULL OF A GIRL TWO TEARS OLD, in which the temporal bone (tp.) is 

 separated from the frontal (fr.) by the broad ala magna of the sphenoid (alisphenoid 

 bone, a.s.) ; pa., parietal. 



FIG. 40. SKULL OF AN ABORIGINAL AUSTRALIAN, in which the temporal bone is 

 separated from the frontal merely by a long process of the alisphenoid (a.s.). 



10 per cent of the last named). This process is also often found 

 in the lower Mammals. [The upper edge of the alisphenoid, above 

 alluded to, may be not infrequently replaced by a distinct bone 

 (the epipteric of Flower before mentioned cf. p. 55, footnote, and 



