抄録
29 mutant genes are briefly described. Of these 11 appeared spontaneously and the rest were induced by X-radiation. They include 10 wing characters, 5 antenna, 4 body color, 1 eye color and 1 eye shape characters ; 5 affect both wings and antennae, 2 both antennae and legs, while 1 Affects wings, antennae and legs.