320 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 83 



Thickness of bones — mostly somewhat to markedly greater than 

 in modern skulls of white man. 



Supraorbital ridges — in adults invariably a biarched, complete and 

 more or less stout torus. 



Forehead — low and sloping to fairly high and well arched. 



A^ault — low to moderately high, oval from side to side, without 

 sagittal ridge or keel. 



Temporal lines — at a good distance, as a rule, from the sagittal 

 suture. 



Parietal eminences — often decidedly lower and more backward than 

 in modern skulls but occasionally approaching conditions in the latter. 



Occipital region — relatively broad, somewhat prominent, flattened 

 from above and from below, and with a more or less transverse torus. 



Sub-iniac region— often more or less concave above, and less full 

 than in modern skulls. 



Temporal squamae — low to moderate. 



Mastoids — small. 



BASE 



Petrous portions stout, on level with surrounding parts and filling 

 anterior lacerated foramen ; no styloid or but slight ; stout tympanum ; 

 marked premastoid groove or space (Hrdlicka). 



Glenoids — shallow to moderate depth, broad transversely, and other 

 peculiarities. 



Basilar portion — relatively flat, condyles rather small ; other peculi- 

 arities of base. 



FACE 



Glabella — even with ridges, to a fairly marked depression (from 

 side to side). 



Nasal process of frontal bone — stout to very stout and interorbital 

 breadth consequently large. 



Large, deep, megaseme orbits. 



Orbital plane — upper half inclined more or less forward and down- 

 ward, due to protrusion of the tori ; also a tendency towards increased 

 inclination of plane laterally, outward and backward. 



Form of orbits — irregularly circular to irregularly quadrangular. 

 Borders stout ; dull to fairly well defined. 



Nasal depression — in a broad uniform concavity. 



Nasal bridge — of suhmedium height. 



Nasal bones — broad, stout. 



Frontal process of maxilla — stout, broad, bulging. 



