302 



FRANZ SCHRADER. 



PLATE III. 



FIG. 12. Giant cell containing 25 chromosomes. 



FIG. 13. Giant cell containing 25 chromosomes. 



FIG. 14. Giant cell containing 30 chromosomes. 



FIG. 15. Giant cell containing 25 chromosomes. 



FIG. 16. Giant cell containing 35 chromosomes. 



FIG. 17. Giant cell containing 35 chromosomes. 



FIG. 18. Giant cell containing 60 chromosomes. 



FIG. 19. Mitotic division in a mycetocyte of an adult female. (Two other 

 sections not shown.) (P. maritimus.) 



FIG. 20. Metaphase plate of chromosomes in a mycetocyte of an adult female. 

 (Two other sections not shown.) (P. maritimus.) 



(P. citri.) 

 (P. citri.) 

 (P. citri.) 

 (P. maritimus.) 

 (P. maritimus.) 

 (P. maritimus.) 

 (P. citri.) 



