718 



THE AMERICAN NATURALIST [Vol. XL VIII 



with single pairs. In the third case, a Beaded male was 

 given four virgin females, so that although all the off- 



TABLE II 



Different Percentages of Beaded-winged Offspring by the Same 

 Parents During Two Separate Ten-day Periods 

 in Different Bottles 



spring have the same father, they come from four 

 mothers. Inspection of this table shows that it is quite 

 impossible to assign the parents of any one brood to any 

 definite class based on the percentage of Beaded-winged 

 offspring that they give. 



Table II shows also that the parents gave a larger per- 

 centage of Beaded-winged offspring during the second 

 ten days than during the first period. That this is a 

 coincidence appears from Table III. Here it is shown 

 from the records of fifty broods chosen at random, that 



TABLE III 



M PARED WITH THOSE OF THE LAST COUNT (] 



from Eight to Ten Days). Based on Cotjn 

 Fifty Broods, Chosen at Random 



Larger percentage oi 

 Larger percentage o: 

 Equal percentage of 



aded-winged offspring the 

 ded-winged offspring both 



