PLATE 85 



B 



D 



Offspring of mutant Zenaida vinaceo-rufa (21). To show the transmission of the "mutational" character in a 



cross with a male Zenaidura carolinensis. 

 A Zenaida mutant (21), age 6 weeks. 

 B, C. First generation hybrid, Z-ZX"> (see table 7 ); the mutational character fully present, mi head, neck, 



breast, and wings, about the equal of its dam. 

 D, E. Two views of first generation hybrid, Z.ZN1 (see table 7): the mutational mark is represented on head. 



neck, and breast; on the wing coverts the apical mark is whitish, but it does not form a mid-streak 



(see text). Photo. Sept. 7, 1907. 

 F. Two third-generation "mutant" hybrids, 3Z-6ZN3 and I. In No. -i (right) the mark is stronger; it is 



present in all the tail feathers. No. 4 (left) a slightly weaker but good mutant, has the mark in two tail 



feathers. 



