112 P. W. WHITING AND ANNA R. WHITING. 



vial a there was found (July 15, 1925) a gynandromorph, freak 

 271, and in vial/ (August, 1925) 3 intersexual males (?), freaks 

 273, 274, and 275. Vials / and g also contained 15 males and 

 9 females. In freak 271 the head was male with twenty-seven 

 joints in left antenna, twenty-six joints in right. Abdomen was 

 female except that some of the sternites were rather small 

 approaching the male condition, Fig. 26. Internal organs were 

 typical female, ovaries, poison sac and glands normal and 

 seminal receptacle devoid of sperm. 



Tests extended over five days. The gynandromorph had no 

 interest in caterpillars except that once its abdomen was curved 

 downward toward them. Flipping reaction was shown toward 

 males and vigorous response toward females flipping, mounting, 

 etc. There was also flipping reaction towards juglandis female. 



INTERSEXUAL MALES. 



Freaks 273, 274, 275. The three intersexual males (?), sibs of 

 freak 271, had short antennse and male genitalia. 



Freak 273, with nineteen joints in left antenna, eighteen in 

 right, had typical male genitalia but sclerites were asymmetrical, 

 some of them approaching the female size, Fig. 30. Freak 274 

 with eighteen joints in left antenna, nineteen in right, likewise 

 had typical male genitalia and asymmetrical sclerites, Fig. 31. 

 Freaks 273 and 274 were found dead. Their abdomens were 

 boiled in sodium hydroxide, the chitin flattened and sternites 

 drawn without foreshortening. 



Freak 275, found alive and apparently in good condition, had 

 eighteen joints in each antenna but the left was slightly mal- 

 formed. Normal male genitalia were present and in addition a 

 small female (?) gonapophysis, Fig. 29. Sternites were irregular, 

 some of them approximating the female. Internal organs were 

 typical in every way for the male. 



Tests extending over seven days showed no responses to males, 

 females, or caterpillars. 



Freak 193. A brevicornis female which had been exposed to 

 her brothers produced besides 91 normal males a male (?) with 

 an appendage similar to a small sensory gonapophysis of a 

 female (Figs. 27 and 28). This individual, freak 193, was 



