262 GERM-CELL CYCLE IN ANIMALS 
Oncopellus 3 
e : 
o@e o > 
Soge off —— seescess 
ee — ® e vA 
A mn ' 
ge HN : 
a8 —- $eseese8 
PO NWAse dh AB 
¢c 
Oncopeltus ¢ 
00S ogtee 
sags I 
Fig. 67.— Maturation in Oncopeltus. Male above. Female below. 
Lettering as in Fig. 65. (From Morgan’s Heredity and Sex, pub- 
lished by the Columbia University Press.) 
