PLATE 1 



EXPLANATION OF FIGURES 



52 Transverse section of the anterior lobe of the hypophysis of an adult 

 turtle showing part of the cortical band and some tubules of the anterior lobe. 

 X 500 (W. U. C. 200). 



53 Sagittal section of the roof of the anterior bud of a 7.2 mm. Aromochelys 

 embryo. X 500 (W. U. C. 77). 



54 Sagittal section of the roof of the anterior lobe of a 14.5 mm. Chryseinys 

 embryo, showing glandular outgrowths. X 500 (W. U. C. 97). 



55 Transverse section of the anterior lobe and lateral bud of a 2S mm. Aromo- 

 chelys embryo. X 500 (W. U. C. 99). 



A, anterior lobe B, brain wall 



L. cortical zone derived from lateral /, residual lumen 

 buds s, capillaries 



276 



