76 



EDMUND B. WILSON 



Y * m ** 



- 



o 



r 



Fig. 2 The second spermatocyte-division in Nezara hilaris. a-i, metaphase 

 figures in side view, o and e showing all the chromosomes; j-l, mid-anaphases; in 

 k and I 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. 



