Explanation of Plate III. 



Fig. 1. Front view ot heail t>t' Artihcits prrsjyicUUitu-s. 



Fig. 2. Side view of same. 



Fig. 3. View of tragus and inner surface of auricle. 



Fig. 4. The interfemoral membrane. 



Fig. .'). The skull and the lower jaw seen from the side. 



Ym. (5. The skull seen from above, x 2. 



Fig. 7. Thi- os petrosa. x 4. 



x2 



V, 



4 



