NEW DATA. 



3^ 



to the level of the male. But this coincidence of color between eosin 

 male and white-eosin compound female is probably without significance, 

 as shown by the results with cherry. 



Table 30.— Pi cherry 9 9 X white d^ d" . 



Eosin-cherry compound was also made. An eosin female was mated 

 to a cherry male. The eosin-cherry daughters were darker than their 

 eosin brothers. Inbred they gave the results shown in table 31. 



Table 31. — Pi eosin 9 X cherry cf . 



Although in the F2 results there are two genotypic classes of females, 

 namely, pure eosin and eosin-cherry compound, the eye-colors are so 

 nearly the same that they can not be separated. The two classes of 

 males can be readily distinguished; of these, one class, cherry, has the 

 same color as the females, while the other class, eosin, is much lighter. 

 Such an F2 group will perpetuate itself, giving one type of female (of 

 three possible genotypic compositions, but somatically practically 

 homogeneous) and two types of males, only one of which is like the 

 females. 



FUSED. 



In a cross between purple-eyed^ males and black females there ap- 

 peared in F2 (Nov. 4, 191 2) a male having the veins of the wing 

 arranged as shown in text-figure D b. It will be seen that the third and 

 the fourth longitudinal veins are fused from the base to and beyond the 



'Purple is an eye-color whose gen is in the second chromosome. 



