44 



THE VARIETIES OF THE HUMAN SPECIES. 



This variety I have described among the crania of Melanesia, 

 and the type which I give is from there; but it is not Hmited to 

 that region and presents certain variations. 



14th. Chomatocephalus {chomatocephalus) (Fig. 31). 



We call " tumulus-like " {chomd) that cranium which is ele- 

 vated like a hill upon a horizontal plane passing through the orbital 

 arches. It is not spherical, and slopes almost equally on all sides, 

 starting at the summit of the cranial arch, which is much elevated, 

 as seen in Fig. 31. Such a cranial arch may not always be regu- 

 lar in its inclinations, nor perfectly symmetrical, and not like a 

 hill or gradual elevations of land, but should resemble a high ele- 

 vation, and be almost disproportionate to the face. The type pre- 

 sented is from Melanesia. It is large, with a large capacity; there 

 are also smaller and different types, both in the same region and 

 elsewhere. 



Fig. 31.— Chomatocephalus. 



Fig. 32.— Platycephalus. 



15th. Platycephalic (^platycephalus). 



Platycephaly usually concerns the arch of the cranium only. 

 It is flat, in a relative degree to the usual convexity. In fact it is 

 a curve of the cranial arch which resembles an arc of a circle with 

 a large radius; the platycephalic forms will be distinguishable in 



