PLATE 10 



EXPLANATION OF FIGURES 



70 to 75 Stages in the development of Iceryan embryo. 



72 Lateral view of an embryo shortly after the completion of revolution. 



73 Lateral view of older embryo almost ready to hatch. 



74 Embryo at the time of the union of the midgut rudiments with the pos- 

 terior prolongation of the stomodaeum. 



75 Ventral view of a larva eight hours after hatching. 



76 Longitudinal section of an Iceryan egg in early cleavage stage. 



146 



