i6o 
FASCICULI MALATENSES 
the nasion is little depressed. The glabella and supraorbital ridges are pro- 
minent in the male specimens, especially in No. 6 ; the forehead is low and 
receding. The outline of the cranial vault, as seen in this view, is irregular, 
and feebly arched as a whole. The occipital squama is convex outwards, 
forming a distinct boss at the back of the skull ; the cerebellar part of the 
bone is relatively large in Nos. 4 and 5, definitely convex downwards in Nos. 
4, 5, and 7, and in No. 6 comparatively small and rather flat. The mastoids 
are somewhat stout, but the zygomata are slender. 
Norma facialis. The face is broad and flat ; in No. 4 it is impossible to 
take measurements for the facial index owing to the complete atrophy of the 
alveolar border, but the mean maxillo-facial index of the remaining 
three specimens is 48*2, the extremes being 469 and 49-2. The external 
nares are very broad, the nasal index is practically platyrhine in every specimen; 
the mean in the four skulls is 52 - 8 , and the extremes are 51 and 57 - 5 - 
The floor of the nasal cavity is separated from the upper jaw by a transverse 
depression in Nos. 5 and 6, while the corresponding ridge is very feebly 
developed in Nos. 4 and 7. The orbits are either mesoseme or microseme, the 
mean orbital index being 85 ’8, and the extremes 82*0 and 87*1. 
Norma occipitalis. The outline is rounded, except in the case of No. 6, 
in which it is definitely pentagonal. In Nos. 4 and 5 the conceptacula cerebelli 
are very prominent. 
Sutures. The sutures are complicated in Nos. 4 and 7, but the denti- 
culations are short ; in both specimens there are numerous Wormian bones, 
and in No. 7 a large double epipteric is present on the left side. 
Jaws and Teeth. The only lower jaw preserved is that of No. 7, and in 
this specimen the alveoli of the molars and premolars have been largely absorbed. 
The same atrophy occurs in the upper jaw, but is even more complete. In the 
upper jaw of No. 4 the alveolar ridge has been completely absorbed. In 
No. 5 the molars of the left side have been lost during life ; but the third 
molar has been well developed on the right. In No. 6 the same loss has 
occurred on the left, and the third molar has been large and fully developed 
on the right. The teeth themselves have disappeared in all cases. 
Except in one specimen, in which it is considerably less, the height of the 
cranium is very nearly the same as the width, the mean vertical index being 
75 - 2 . The crania are on the upper limit of microcephaly, the mean capacity 
of the male skulls being 1,332 c.c., and of the female 1,305 c.c. They are 
phaenozygous, and rest behind on the posterior border of the foramen 
magnum. 
