PLATE 8 



EXPLANATION OF FIGURES 



Pseudococcus. Toto preparations. 



52 Lateral view of an embryo during the process of revolution. 



53 Lateral view of an embryo after the completion of revolution. 



54 Surface view of an embryo like the one represented in figure 53. 



55 Surface view of a much older embryo. 



56 Lateral view of still older embryo at the time of the completion of the 

 alimentary canal. 



57 A Pseudococcus larva at the time of hatching. Toto preparation. 



58 An early cleavage stage; toto preparation of an egg of Lecaniodiaspis. 



59 Surface view of a Pseudococcus embryo in an early invagination stage. 



60 Surface view of an Lecaniodiaspis embryo at the time of the appearance 

 of the mouth rudiment. 



142 



