Gray. 



Roy. Soc. Proc, B. vol. 78, Plate 18. 



Fig. 5. — Membranous Labyrinth of Fig. 6. — Membranous Labyrinth of 



the Crested Screamer, Cariama the Masai Ostrich, StrutMo masai. 



cristata. x 4. X 4. 



