1893.] - The Genealogy of Man. 329 
development, neither the Papuans, Australians, nor Negroes of 
any race. But we find the superciliary crests and underlying 
sinuses identical in adult female orangs and chimpanzees and 
young male gorillas. In the female chimpanzees the crests are 
almost inferior in size to those of the man of Spy. 
I1.—The retreating forehead of the two crania of Spy, is not 
found in any existing human race, while it is typical of that of 
Cannstadt. It is characteristic of female orangs and gorillas 
and of the young males of both species, and of adult males and 
female chimpanzees. It appears in existing men in rare and 
isolated cases. 
III. —The prominent transverse superior semicircular crest 
of the occipital bone is found in existing races among the 
Fellahs of Africa and the Nigritos. It is characteristic of the 
Cannstadt skulls, and presents exactly the same characters as 
the young male and female orang and gorilla, and young male 
and adult female of the chimpanzee. 
IV.—No human race presents the characters of the lower jaw 
exhibited by those of Spy, Naulette and Shipka. In this part 
of their osteology the anthropoids depart widely from man, the 
most conspicuous point in the latter being the presence of a 
chin. Accordingly, the angle formed by the anterior face of 
Fie. 3. ; Fic. 4. 
Vertical sections of symphysis mandibuli of gorilla (Fig. 3), and orang (Fig. 4). 
From Fraipont and Lohest. 
