GYNANDROMORPHS IN HABROBRACON. 93 



Her orange-eyed sons were 35 with flat wings to 44 wrinkled. 

 In 22 of the wrinkled in which r 4 could be observed it proved to 

 be normal. The 57 normal demonstrate that d II95 was not 

 present and this was evidenced also by later generations. 



Freak 257 therefore originated from a first oocyte division as 

 follows : 



First polar body OOd II95 d II95 Ww 



Cleavage nucleus ooD n D n Ww 



Freak 259. A second F t female, od II95 wOD n W, mentioned 

 under Origin of freaks 250, etc., was set and produced males- 

 type 37, defective 10, wrinkled and wrinkled defective 36, 

 orange 35, orange defective 18, orange wrinkled and orange 

 wrinkled defective 41. In vial h an orange female (freak 259) 

 appeared (March, 1924). This female had deformed gona- 

 pophyses and sting but was otherwise normal. No offspring 

 could be obtained from it and hence its exact composition as 

 regards d II95 and w is not known. Since it had flat wings and 

 normal r 4 vein there was present at least one dose of W and 

 probably of D n . It demonstrates that for orange the first oocyte 

 division was reductional. 



MOSAIC MALES AND FEMALES. 



Five males with mosaic eyes are reported in the present 

 paper. They are regarded as haploid mosaics from unfertilized 

 eggs (haploid mosaic arrenotoky) in the formation of which 

 both products of the second maturation division (ootids) have 

 become cleavage nuclei. Maturation has been carried a step 

 farther than in the case of impaternate females. 



Freak 65. Orange defective from the early L. material was 

 bred up to L. type stock i for nine generations alternating with 

 generations segregating orange and defective from the dihetero- 

 zygous females. An orange defective male of the ninth segre- 

 gating generation was mated to a type female, L. stock I. An 

 FI female produced males type n, defective 8, orange 4, 

 orange defective 4, and females type 2, besides a defective 

 (grade 5) male (freak 65) with orange eyes and black ocelli, 

 appearing in vial b (August 4, 1921). Wings and compound 

 eyes of this freak must have been of maternal origin for his 



