IO8 P. W. WHITING AND ANNA R. WHITING. 



Asymmetry of wings indicates that thorax was probably in 

 part male, in part female. Both male and female structures 

 therefore possess W. Female parts, the eyes, likewise have O. 

 Since both parents possessed O and W this case gives no clue as 

 to the origin of the characters in the gynandromorph. 



Freak 250. An Fi female, OoWw, from an orange defective 

 wrinkled male by a sooty female, stock 1 1 (see Origin of freak 250, 

 etc.) produced males type 40, orange 46, wrinkled 29, orange 

 wrinkled 43, and females type 62, and a black-eyed, flat- 

 winged gynandromorph with normal r 4 vein and sooty meso- 

 sternum found in vial c (February 9, 1924). Head was male, 

 antennae each with twenty-two joints. Abdomen was entirely 

 female. Ovaries and poison sac were normal; seminal receptacle 

 was without sperm. 



Tested with females it showed flipping of wings and mounting. 

 It was indifferent to caterpillars but pierced cotton plug with 

 sting. Tests extended for six days but were not entirely satis- 

 factory as ends of antennae broke off probably from over- 

 etherizing. 



As regards method of origin the case is inconclusive for the 

 black eyes of the male head may have been inherited from either 

 parent. 



Freak 255. An FI female, OoWw, from an orange defective 

 wrinkled male by a sooty female, stock 1 1 (see Origin of freak 

 250, etc.), produced males type 43, orange 29, wrinkled 29, 

 orange wrinkled 25 and females type 50, and an orange-eyed 

 gynandromorph, freak 255, found in vial d (February 16, 1924). 



The head of this gynandromorph was male, twenty-two joints 

 in each antenna, wings were flat, left slightly longer than right, 

 r4 veins complete, mesosternum sooty. The abdomen was 

 entirely female, ovaries and poison apparatus normal, seminal 

 receptacle containing sperm. 



No interest was shown in caterpillars. Very definite flipping 

 reaction occurred toward females, but gynandromorph did not 

 mount them. The tests indicate male reactions but are not 

 satisfactory as antennae lost their terminal joints after two days, 

 due probably to over-etherizing. 



The case is of interest from the point of view of method of 



