Masked 

 Heterozygote 



Extracted signaticollis 



Normal 

 Heterozygote 



Extracted diversa 



3/4- 



L. st^nat/co// IS 



L. diverse 



Reaction in cross of L signaticollis and L. diversa when values of the Ac determiner are different, 



BUT conditions OF MEDIUM ARE NEUTRAL. FIGURES REPRESENT THE FRATERNITIES OBTAINED IN A SINGLE 

 LINE OF CULTURES. 



JULtirS DIEN IJXIl., N. Y. 



