1024 
than that of the woman, which is a plausible estimation, I find for 
him the ratio 1 : 40. Thus much appears, at any rate, with certainty 
that as regards the comparative size of the two chief parts of the 
skull, the neurocranium and the splanchnocranium, Homo wajaken- 
sis resembles those most primitive recent human types, and also the 
Plistocene Homo neandertalensis. 
In many more respects there is unmistakable resemblance between 
Homo wadjakensis and the recent Australian group of races. But he 
also presents deviations from this group, which are certainly partly 
due to a more “primitive” condition. 
Both these points may further appear from the description of some 
other characters. 
The strongly marked glabella and superciliary ridges, also of the 
woman of Wadjak, though not in the same degree as of the man, 
are certainly australoid characters, but the supraorbital borders and 
also the lateral orbital borders are somewhat less massive and rounded 
than in the Australian crania. The height of the orbit is 33 mm., the 
breadth 42 mm. in Wadjak I, so that the orbital index is 78.6. For the 
male cranium these dimensions and index are 30, 40, and 75; it 
is remarkable that the orbit is smaller in the man, but the lower 
index for the woman presents an important sexual difference 
in the Australians, according to Turner. He found for the mean 
orbital index of Australian crania 84, for that of twenty men 81.4, 
and of nine women 90; Frower in fifty-one Australian crania 
a mean index of 80.9, Quatrefages and Hamy in thirty-one 
crania a mean index of 78.8. The inter-orbital breadth of Wadjak 
II is at least 29 mm. Turner found as mean of male Australian 
crania 24.5 mm., and as maximum 28 mm. 
The root of the nose is deeply sunk (most in Wadjak II), and 
the bridge of the nose is very flat, rounded from side to side. 
The apertura piriformis of Wadjak I measures across 30, (Wadjak 
II 32), the height is 27 mm., to which corresponds the index 111. 
In Australian crania this index ranges between 82 and 130 according 
to KLAatscH; in European crania it is on an average 70. The spina 
nasalis is short and blunt. The nasal height is 50 in Wadjak I, the 
nasal breadth 30 mm. (in Wadjak II 32), the nasal index 60. In 
Australian crania the following values were found as means for 
this nasal index: 57.9 by Quarrrraars and Hamy (N = 31), 56.9 by 
Frower (N= 31), 53.4 by Turner (N = 29), 55.6 with the maxi- 
mum 65.1 by Duckwortu (N = 38). 
The sides of the nasal aperture are not sharp-edged, but, as 
generally in Australian skulls, blunt and rounded off, especially near 
