110 



GENETIC STUDIES ON A CAVY SPECIES CROSS. 



Table 20. 



Maiings of ^V ™W females, in 

 which all the offspring are 

 black. 



Table 21. 



Summary of Tables S, 6, and 16-20 (all offspring are 

 black pigmented). 



Table 23. 



Maiings of | mid females hetero- 

 zygous in black, with brown 

 guinea-pig males. 



Table 22. 



Matings of \ wild females, heterozygous 

 black, with brown guineor^ng nudes. 



