K. ToYAMA 373 



TABLE IV.— {continued). 

 Crossing between Tetravoltine Normal-er/ijed and Heterozygous Grey-egged Variant No. 24. 



Nornud-egged Series. 



Year Number of Matings Normal Grey B-grey Totals 

 ; 1910 

 (Autumn) 



2. 2. 7. 5. 4 

 13* 

 11 

 17 

 20 

 77 



22 

 80 

 39 

 37 

 41 

 29 



Totals 



24S 



F-! 1911 2.2.7.5.13. 3i 



(Spring) 



y 213 



22 

 80 

 39 

 37 

 41 

 29 



248 



243 



Grey-egged Series. 



Number of Matings Nonnal Grey B-grey Mixed Totals 



2. 8. H. 1 



4 



6 



,, 11 



,, 44* 



12 

 



16 

 

 



39 

 2 

 32 

 14 

 42 



21 

 2 

 18 

 18 

 3-5 



Totals 



72 



4 



66 



32 



77 



49 49 



103 



* Those marked with an asterisk are the parents of next generation. 



