ORIGIN OF A POLYDACTYLOUS RACE OF GUINEA-PIGS. 27 

 TABLE 10. Character of the extra-toe in young of $ \ 140 ( GN], generation IV. 



TABLE ll. Character of the extra-toe in young of $ 1165 (GG), generation IV. 



TABLE 12. Character of the extra-toe in young of $ 1263 ( GG), generation IV. 



TABLE 13. Character of the extra-toe in young of $ 1264 (GG), generation IV. 



