K. TOYAMA 



383 



Of eight matings, five gave all normal dark eggs, while three 

 gave all divoltine white eggs, which is the maternal characteristic of 

 tetra- or divoltine females in their spring brood. 



2. ( ? crimson breed x ^ normal breed.) 



The reversed matings gave results identical with those represented. 



Female parent 

 ( Crimson 

 ( i» 



Male parent 

 Tetravoltine Onodahime 



If »' 



The extracted normal-egged \ 

 form from the cross be- 1 

 tween Bombyx mori and [ 

 Theophila mandarina ) 



Chinese "Dragon horn " 



Number of 



Matings 



Eggs laid [Fi) 

 normal dark 



2 and 3 divoltine white 



greenish slate 



The results of the reciprocal matings shew us that in the ^i eggs 

 normal coloured or greenish coloured characteristics dominate over the 

 crimson, while the voltine characteristics are, as in other egg-character- 

 istics before enumerated, maternal in inheritance. 



B. F, Eggs. 



The worms and moths derived from the reciprocal normal-coloured 

 Fi eggs in the summer of 1910 were all dark-eyed, and the moths 

 paired inte7' se gave the following F^ eggs : 



Totals 



1454 



521 



