THE EMBRYOLOGY OF THE HONEY BEE 



DS 



57 



AMR 



AMR 



Fig. 24. Transverse sections through the anterior ends of two eggs of 

 Stage IV, intersecting the anterior mesenteron rudiment (AMR), illus 

 trating the movement of the lateral blastoderm toward the mid-line during 

 the growth of this rudiment. The development of the amnion in this 

 region is also shown. In A the anterior mesenteron rudiment is barely 

 visible, in B, a slightly older stage, it forms an evident swelling, x 243. 



