PLATE 5 



EXPLANATION OF FIGURES 



67 Right view of a reconstruction of the hypophysis of a 12 mm. Colubra 

 (M. U. E. C. — ). X 150. 



68 Left view of a reconstruction of the hypophysis of a 12 mm. alligator 

 (R. C. 24). X 150. 



A, anterior bud R, Rathke's pouch 



L, lateral lobes S, stalk 



M, roof of mouth 



284 



