262 



GERM-CELL CYCLE IN ANIMALS 



OnccpettoAf 3 



to*.* 



*.o°. 



fl .^^ 



c 



••• 



••• 





w^ 



Wlii//- 



Onccpettu^ 9 



JT' 







Fig. 67. — Maturation in Oncopeltus. Male above. Female below. 

 Lettering as in Fig. 65. (From Morgans Heredity and Sex, pub- 

 lished by the Columbia University Press.) 



