GYNANDROMORPHS IN HABROBRACON. IOQ 



origin of the male parts. Orange eyes must have come from the 

 heterozygous mother. The flat character of the right wing, 

 probably male, may have been received from either parent. 



As regards orange, maturation and fertilization may be ex- 

 pressed as follows: 



First polar body O(O) 



, . I ootids o 



Cleavage nuclei \ 



( male pronucleus 



(o) 

 O 



Freak 32.- A black-eyed female from L. stock i was crossed 

 to an orange male from the third segregating generation alter- 

 nating with three successive crosses to L. stock i. L. stock 

 only was involved. There were produced black males 14 and 

 females 20 and a black-eyed normal-winged gynandromorph, 

 freak 32, found in vial e (April 20, 1921). 



Head of freak 32 was male, antennae with twenty-two joints in 

 left, twenty-one in right. Abdomen was normal female type 

 except that first three segments of left side were male (Figs. 22, 

 23, 24). Internal structures were not adequately studied. 

 Ovaries containing large eggs were observed. 



Tests extending for three days brought forth no reactions 

 towards active or paralyzed caterpillars. Reactions toward 

 males attempting to mate were negative, the abdomen was bent 

 down and the gynandromorph attempted to kick off the males. 

 Nevertheless a male succeeded in accomplishing two copulations 

 of about thirty and fifteen seconds respectively. There was 

 not the slightest reaction towards females. The specimen seemed 

 healthy in every way but acted clumsily in cleaning its wings, 

 gonapophyses, etc. 



The black eyes of the male head must be of maternal origin. 

 The mother was homozygous. 



First polar body OO 



Cleavage nuclei \ 



ootids O 



[ male pronucleus 



O 



o 



Freak 248. A black-eyed female from I. stock n was crossed 

 with an orange male from L. stock 7. There resulted black 

 males 35, black females 133 and a black-eyed, normal winged 

 gynandromorph, freak 248, found in vial b (January 28, 1924). 



