PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. [1885. 



EXPLANATION OF PLATE XXII. 



Fig. 1. Front view of the Cbaclacayo skull, sliowiug the complex trephine, the 

 rauuimified skin still adhering to the bone, the cranial deformation, and the distorted 

 condition of the bones of the nose. 



Fig. 2. Shaded view of the artificial opening enlarged, showing direction of in- 

 cisions. 



Fig. 3. Outline of artificial opening, with a slight difference in the interpretation 

 of shallow scratches in the upper right-hand portion. 



