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THE AMERICAN NATURALIST [Vol. XL VII 



Before discussing this case, the results of a similar 

 mating of other Fj birds, in 1912, maybe presented. The 

 male was 8 L, mated with his sisters, 8 B, 8 G, 8 H 

 and 8 I, all of which resembled the F x females in the 

 1911 series. 



TABLE II 

 Results in 1912 from Mating 

 c?(W. L. (J X B. H. $) X ?(W. L. X B. II. $). 



It may now be asked how the presence of the barred 



