Explanation of Plate XX. 



Figure i. — Ost. Coll. 3178. From Cave 30. Adult female skull. Undeformed highland 

 type. Anterior view. 



Figure 2. — The same skull. Posterior view. 



Figure 3. — The same skull. Lateral view. 



Figure 4. — The same skull. Superior view. 



Figtire 5. — The same skull. Basal view. 



