BRITISH EAST AFRICA 
108 
Subnasal prognathism is present, but in a slight degree only. 
The canine fossae are distinct below each orbit. 
The palate is of relatively large size : no upper teeth 
remain (but some have fallen out post-mortem). The cranial 
base is flat. The foramen magnum occupies a central position 
in norma basilaris. This is due to the occipital elongation 
already remarked. The occipital condyles are small and 
round. The glenoid fossae are of the shallow type. 
In norma occipitalis (fig. 4) the transverse arc is less evenly 
rounded than in norma facialis ( q.v .). The transverse (coronal) 
section of the cranium in the parietal region thus contrasts 
with a similar section in the frontal region. Yet this contrast 
is not great here. The deficient downward extension of the 
mastoid processes is evident from this point of view. 
The mandible is small, with a rather remarkably pointed 
chin (fig. 5). The whole of the left ascending ramus is deficient 
and also part of the right side (figs. 5, 6). The lack of lower 
incisor teeth is not to be ascribed to senility ; for, as already 
noted, these teeth are artificially extracted by the Kikuyu 
tribe. The remaining teeth are : on the right side pm 2 , m 1 , ra 2 , 
on the left m 1 only. Taking the general dimensions of the skull 
into comparison, these teeth are relatively large, but not 
excessively so. Yet they are distinctly larger than in the 
majority of civilised jaws. 
B 
Fig. 5. — The man- 
dible of the 
ancient Kikuyu 
skull, viewed 
from above, 
(x b) 
Fig. 6. — The man- 
dible of the 
ancient Kikuyu 
skull, viewed 
from the right 
side, (xj.) 
Fig. 7. — The man- 
dible of the 
ancient Kikuyu 
skull, viewed 
from in front 
( x b) 
