I)r(f.s()/t}iil(i .]frl(iiioff(isl(r 



305 



V-2 fjeueral 



•less V 1>\' ••lli"\C(l ,\ 



The Fi were made up in nias>^ cultures July 10. 1016. transferred to new 

 bottles .Inly IG. The linal count was made July 124. 1910. 



/r. Behavior of curved iritli ve>ili(jial. (lironiosomc If. 

 Vestigial, a luenibor of jrnnip II. was described and the linkage of the gone 

 reiK)rted by Morgan and l.yiicli. The double reces.sive does not appear 

 among the offispring on mating the F, from a cross involving two simple ro- 

 eessives whose genes are allocated in the same chromosome. This is i]}n' 

 to the fact that in this species there is no crossing over in the male. 



1. Vestigial 9 by curved cf. 



The Fi from this combination had long wings typical of wild stock. Table 

 V gives the different classes that appeared in the F.. 



Table VI. Fa generation from vestigial 9 by curved cf". 



-Six flies in this group wore uiiiuis oue oye. 



