GYNANDROMORPHS IN HABROBRACON. 1 07 



slight flipping occurred. On the fifth day there was aggressive 

 reaction, mounting, etc. 



Freak 258. 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 20, orange 12, wrinkled 15, orange 

 wrinkled 19, and females type 39, and a black-eyed gynandro- 

 morph, freak 258, found in vial c (February 26, 1924). 



The head of this gynandromorph was female, fifteen joints in 

 each antenna. Mesosternum was yellow; left wing slightly 

 longer than right. Vein r 4 of right wing was normal, of left 

 broken. Abdomen was entirely male with normal external 

 genitalia. Digestive tract and abdominal nerve ganglia were 

 apparently normal, as were the penis, sperm sac, and ducts. No 

 testes could be found, either connected with the ducts or in 

 dorsal anterior part of abdomen, as in the gynandromorph, 

 freak 5. 



Tests for reactions may be discussed by days abstracted from 

 the record book. 



February 27. Gave flipping reaction in presence of females. 

 Ran over active caterpillars without noticing them. Later gave 

 typical female reaction toward caterpillars inspecting them with 

 antennae, withdrawing and approaching with abdomen thrust 

 f orward . 



February 28. Slight flipping in presence of various females, 

 but in general attempted to avoid them. Definite female re- 

 action toward caterpillars as before. Tried to sting cotton 

 plug with tip of abdomen. 



February 29. Bumped into females without flipping. Then 

 mounted one with definite reaction as if to mate but ran off very 

 excitedly. Inspected paralyzed caterpillar and later cotton plug 

 very carefully with antennae. 



March i to March 4. Left with virgin female. No females 

 resulted among 40 males produced. 



March 4. Definite female stinging reactions towards active 

 caterpillars. No reaction toward females. Kicked off males 

 attempting to mate with it. 



As a result of these tests we may say that reactions were 

 predominantly female but with weak and occasional male 

 responses. 



