GYNANDROMORPHS IN HABROBRACON. 99 



orange defective 964, and females orange 1,371, and orange 

 defective 900. There was no correspondence in defectiveness 

 either of black or of orange daughters of freak 264 and defective- 

 ness of their progeny. Defective sons from black females were 

 51.84 i. 20 per cent, and from orange females 41.50 0.70 

 per cent. The difference is 10.34 J -38 in favor of the former. 

 Defective daughters from black females were 51.38 db 1.40 per 

 cent, and from orange females 39.63 0.69 per cent. The 

 difference is 1 1 .75 i .56 in favor of the former. 



Maturation of the egg producing freak 264 may be represented 

 as follows: 



First polar body Ood II95 d 1I95 wwD x d x 



Cleavage nuclei OD u Wd x oD n WD x 



Freak 280. The mutant male reduced (wings), freak 268, 

 occurring in the F 2 generation from L. stock 8 female by I. 

 stock ii male was mated to an L. stock i female. A reduced 

 male occurring in p2 from this latter cross, mated to an L. 

 stock 8 female produced 6 type females, no males occurring in 

 the culture. One of these virgin females produced males- 

 type 42, orange 39, reduced 58, orange reduced 45, and a black- 

 eyed male, freak 280, with left primary wing long, right reduced 

 (May, 1925). 



An observed mating of this mosaic with an orange-eyed 

 female, stock 8, resulted in orange males 98, and one black 

 female. Unfortunately this female died without offspring and 

 no more progeny could be obtained from the mosaic. The one 

 black-eyed daughter demonstrates that the mosaic transmitted 

 black. 



According to the theory advanced for the production of males 

 with mosaic eyes, freak 280 might be formed as follows: 



First polar body 0(0) Rr 



Cleavage nuclei O(R) (O)(r) 



Freak 279. An ivory (eye) reduced female, stock 20, mated 

 with a type male, stock n, produced 18 ivory reduced males 

 and 70 type females and in vial d a black-eyed female with 

 left primary wing long, right reduced, freak 279 (April, 1926). 

 This female which had evidently mated with an ivory reduced 



