306 



R. M. STRONG. 



TABLE XL 



WHITE HYBRID MALE (TABLE VII.) X WHITE HYBRID FEMALE (TABLE VII.). 



MATING 13. 



Offspring: 3 whites: i female and 2 sex ?. 

 W. 9 W. 



W.c? 



W.cf W.cf 



W. 9 



B. 9 (Original Stock.) 



TABLE XII. 



BLOND HYBRID MALE (TABLE VI.) X WHITE HYBRID FEMALE (TABLE VII.). 



MATING 15. 



Offspring: 2 blonds, sex ?. 



4 whites, i male and 3 sex ?. 

 B. W.cf W. 



B.c? B. W. 



I I I 



X- 



W.c? W. 9 



I I 



x- 



B.9 W. 9 



r - 



W.cf B.9 



(Original Stock.) 



are those which were obtained by Durham and Marryat ('08) 

 with canaries. Their cinnamon or pink-eyed canaries corre- 

 spond in breeding behavior to the white ring-doves and their 

 green or black-eyed canaries to the blond ring-doves. The 

 results differ in that the ring-dove hybrids lack the variability 

 which was characteristic of the canaries a point of apparently 

 no significance from the standpoint of the problems which are 

 under discussion. No crossing comparable to their mating 



