PLATE 3 



EXPLANATION OF FIGURES 



60 Left view of a wax reconstruction of the hypophysis of a turtle embryo, 

 4.6 mm. long. X 120 (W. U. C. 79). 



Gl Same view of a 7.2 mm. embryo. X 150 (W. U. C. 77). 

 62 Same view of a 17.0 mm. embryo. X 150 (W. U. C. 42). 



A, anterior bud or lobe R, Rathke's pouch 



7, pars intermedia *S, stalk 



L, lateral lobes St, remnant of stalk. 

 M , epithelium of mouth 



280 



