PLATE 16 



EXPLANATION OF FIGURES 



106 Oblique frontal section of the embryo like the one represented in figure 55. 



107 Transverse section of a Pseudococcus embryo somewhat older than the 

 one represented in figure 55. 



108 Transverse section through thoracic region of the embryo represented in 

 figure 105. 



109 Transverse section through the last thoracic region of an embryo some- 

 what older than the one represented in figure 55. 



158 



