Explanation of Plate XXVI. 



Figure i. — Ost. Coll. 3230. From Cave 75. Adult male(?) skull, with partial fusion of 

 the atlas and the occipital bone. Anterior view. 



Figure 2. — The same skull. Posterior view. 



Figure 3. — The same skull. Lateral view. 



Figure 4. — The same skull. Superior view. 



Figure 5. — The same skull. Basal view. 



