IO6 P. W. WHITING AND ANNA R. WHITING. 



antenna, twenty-four in right. All structures of abdomen were 

 female except first left sternite which was of the male type. 

 The sting was deformed at tip. Ovaries and poison apparatus 

 were normal, seminal receptacle devoid of sperm. 



Tests for reactions extended for two days only, but were 

 very thorough. Responses were entirely similar to those of a 

 normal male. There was positive mating reaction toward other 

 males but vigorous response toward females which it mounted 

 several times. When males attempted to mate with it, it acted 

 rather indifferent, turned abdomen down slightly and moved 

 away. This reaction was at each time different from the definite 

 negative reaction characteristic of certain females. No reaction 

 toward active caterpillar could be obtained. Gynandromorph 

 simply moved away indifferently. Even contact of caterpillar 

 with the gonapophyses had no effect. No eggs were laid on 

 paralyzed caterpillar left with it over night. 



Freak 267. An ivory-eyed mutant male, freak 281, appearing 

 in p2 from a cross of L. stock 10 female by mosaic male, freak 

 264, was crossed to an L. stock 10 female. Ivory defective 

 stock 17 was derived from descendents of these. A stock 17 

 female was crossed to an ivory defective wrinkled male of the 

 tenth generation descended from crosses of L. stocks 9 and 10, 

 and descendents of the impaternate female, freak 257. An 

 ivory defective daughter, heterozygous for wrinkled was crossed 

 to a stock 17 male. Among the flat and wrinkled males and the 

 flat females resulting (numbers not recorded) there appeared 

 (February 18, 1925) an ivory defective (grade 5) flat-winged 

 gynandromorph, freak 267. 



Antennae of this freak were definitely male although the left 

 showed terminal fusion, deficiency, with about eighteen joints 

 visible. The right was normal with twenty-one joints. Ab- 

 domen was entirely female externally. Ovaries and poison 

 apparatus were normal, seminal receptacle contained sperm. 



Tests for reactions extending over five days showed indifference 

 to caterpillars. Males attempting to mate with it were repulsed 

 many times but responses were male-like, the gynandromorph 

 hurrying to get away rather than bending down abdomen. 

 There was no reaction toward females until the fourth day when 



