4 Congenital Anomalies in a Native African Race 
Jaidi, male, aged 20 years, a Yao of Chumbosa, Bursali, is the second child of 
a family of three, the elder brother being dead and the younger sister normal. 
No family history was elicited. 
Fig. '2. Jaidi. 
The growth of the face is defective as before noted, the zygomatic arches are 
so little developed that there are practically no cheeks. The descending rami of 
the jaws converge very considerably so that the floor of the mouth is very narrow 
and the horizontal rami are so short that the symphysis is situated raid-way be- 
tween the lower lip and the neck as they lie on one horizontal plane. The palate 
is high and narrow. 
Tlie following measurements were made : 
Maximum occipito frontal . . . . . . . 19"1 cm. 
,, bi-parietal ........ 13'8 
Bizygomatic at junction of zygoma with temporal . . 12%3 
Nose : length ......... 4*7 
breadth ......... 3"8 
Face : nasion to commissure of lips ..... 7'7 
„ symphysis of chin . . . . . 11"2 
Right external strabismus is present and vision defective. 
Though mentally an imbecile with an impaired speech he is an excellent field 
labourer. He states that no woman would marry him but that he has had sexual 
intercourse and that he is capable of the act. 
