ORIGIN OF A POLYDACTYLOUS RACE OF GUINEA-PIGS. 27 



Table 10. — Character of the extra-toe in young of $ \ 140 ( GN), generation IV. 



Table ii. — 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 (C7C), generation IV. 



