K. TOYAMA 



387 



crimson and normal-eyed moths derived from the mixed batches of the 

 above breeds when paired inter se oviposited the following batches: 



^= normal-eyed; 12 = crimson-eyed moths. 

 Parent Moths Eggt Uid 



Divoltine "Tamanashi" 



No. 1 R X R 



No. 3 R X R 



No. 14, Nob. 8—14 R x R 



all diToltine white eggs 



As the figures shew,certain normal-eyed matings gave all normal dark- 

 coloured eggs while others gave mixed batches (3 normals : 1 crimson). 



The lineage of the crimson-eyed matings which yielded all divoltine 

 white eggs remained true to parents in their successive generations, 

 and gave crimson-coloured eggs without exception in the summer 

 brood. 



The order of inheritance of these characteristics is in exact accord- 

 ance with the .^3 of a monohybrid cross, and the ^rental mixed eggs 

 given by Mr Saito were undoubtedly F^ eggs between the crimson and 

 normal-coloured forms. Now we may clearly see that those crimson- 

 coloured characteristics found in the three different breeds are in the 

 same nature and Mendelize in the normal oi-der, the crimson being 

 hypostatic to the normal-coloured one. 



Resume: 



JR=erim8on; N=iioTmal. 



{N X R) (reciprocal) 



Fi eggs N 



F, „ {3N : IB) 



N {3N : IR) 



(Pi X R) 

 {IN t IR) 



