PLATE 7 



EXPLANATION OF FIGURES 



43 The first cleavage cell of Lecaniodiaspis. 



44 Longitudinal section of an egg of Pseudococcus in an early blastoderm 

 stage. 



45 to 47 Surface views of embryos. 



48 and 49 Surface views of embryos, somewhat older embryos. 



50 Lateral view of embryo. 



51 Surface view of a somew^hat older embryo than the one represented in 

 figure 50. 



140 



