286 MR. F. E. BEDRARD ON THE VISCERAL [MaV 15, 



Fis. I. 



Syrinx of Balcsniceps rex. Front view, b, free margin of broncliidesraus. 



Fis. 2. 



Syrinx of Bala-nicqjs rex. Posterior surface. I), as in fig. 1. 



