260 GERM-CELL CYCLE IN ANIMALS 
Lygaeus 3 
iis Ax * 
ae 7 US@ 
aL ° 
iy 
oN Zs A® 
Fic. 66.— Maturation in Lygwus. Male above. Female below. Let- 
tering as in Fig. 65. (From Morgan's Heredity and Sez, published 
by the Columbia University Press.) 
