62 
EDMUND B. WILSON 
Fig. 4 Anaphases of first division, all from No. 64; g and h are atypical condi- 
tions. 
As is the rule throughout the Coreidse, the regular grouping char- 
acteristic of the first division is usually lost or obscured in the 
second. As a rule the ring formation is no longer seen, there is, 
no constantly eccentric chromosome, while the m-chromosome, 
invariably central in position in the first division, now occupies 
any position, though it is more frequently near the center of the 
group. 
In side views of the metaphases all of these chromosomes, with 
one important exception, are dumb-bell shaped, and in the initial 
anaphases are seen drawing apart into a pair of daughter-chromo- 
somes (fig. ^e-g). One chromosome, almost invariably central 
in position, forms an exception in showing no sign of constriction, 
its form being evenly rounded and often nearly spheroidal. As 
