76 EDMUND B. WILSON 
s@ y % HO dae 
| 0% 1° e 09 
| 
age Re P r e@ +; 
Fig. 2 The second spermatocyte-division in Nezara hilaris. a7, metaphase 
figures in side view, a and e showing all the chromosomes; j—l1, mid-anaphases; in 
k and 1 all the chromosomes are shown artificially spread out in series; m—n, o-p, 
q-r, s-t, four pairs of sister-groups from late anaphases, in polar view, in each case 
from the same spindle. 
