STUDIES ON GERM CELLS 



ROBERT W. HBGNBR 



PLATE 8 



49 



46 



50 



47 



48 Transverse section of egg containing 

 four cleavage nuclei. 



49 Egg containing e'ght cleavage nuclei. 



50 Egg containing sixteen cleavage nuclei. 



51 Egg containing 133 cleavage nuclei. 



52 One cleavage nucleus from egg shown 

 in figure 50, enlarged. 



53 Primordial germ cell just after separa- 

 tion from the egg. 



54 Blastoderm cell. 



55 Vitellophag. 



56 Leptinotarsa decemlineata; nuclear 

 division of vitellophags. 



57 Nuclear division of vitellophags in a 

 centrifuged egg. 



507 



