ORIGIN OF A POLYDACTYLOUS RACE OF GUINEA-PIGS. 27 

 TABLE 10. Character of the extra-toe in young of $ 1 140 ( GN), generation IV. 



TABLE il. 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. 



