PZ.S. 1885. PI. XXXV. 



21 



^ rj 



Ostrich-. Tig. 3. 



Trog. Tig. 2. 



Crocodile. Fl^.4- 



Chick. Tig. I . 



'P 



J.Smit lith . 



SKULLS OF OSTRICH. FROG CROCODILE ^ CHICK .""^"'"'"^' 



