PLATE 80 



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Head, eyes, and naked periobital areas of Columba guinea (mutant and normal) and of other 

 Columba. Natural size. Colored photographs, Mar. and Apr. 1910. Toda del., June 1910. 



A. C. guinea, normal (19), adult. 



B. C. guinea, same as above. Pupil as seen in sun. 



C. C. guinea, mutant (20) adult. 



D. Colored photograph of head and neck of C. eversmanni. Natural size. Toda del., June 1910. 



E. C. domedica. 



F. C. leuconota. 





