110 



GENETIC STUDIES ON A CAVY SPECIES CROSS. 



Table 20. 



Maiings of /^ wild females, in 

 which all the offspring are 

 black. 



Table 21. 



Summary of Tables 2, 6, and 16-20 {all offspring are 

 black pigmented). 



Table 23. 



Maiings of \ wild females hetero- 

 zygous in black, with brown 

 guinea-pig males. 



Table 22. 



Matings of \ wild females, heterozygous in 

 black, with brown guinea-pig males. 



