PLATE 2 



EXPLANATION OF FIGURES 



Pieris 



11 An adipose cell from 5th stage larva, showing albuminous granules and 

 acidophile nuclear granules. X 300. 



12 Same from a little older larva: albuminous granules beginning to show 

 basic color. X 300. 



13 Same from a larva just before pupation, showing karyolytic condition 

 of the nucleus. 



14 An adipose cell from a mature larva (osmic acid preparation). The nu- 

 cleus contains a fat droplet. X 300. 



15 A nucleus of an adipose cell, showing the migration of acidophile nuclear 

 granules into cell body. X 1200. 



16 An adipose cell from a well grown larva, showing mucus (?) globules. 

 X 300. 



516 



