THE DIVISIBILITY OF CHARACTERS. 211 



m 



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Text-figire 2. — Head and nci-k-mark of an adult male hybrid (K 1 ) between a white male fantail {Columba laUcauda, 

 F) and a female blond ring-dove [Ulrcploydia risoria, B). Hatched Dec. 1, 1897; age 6 years. X 1.2. Toda 

 del., Jan. 1903. 



^-. # 



Shows neck-feathers of first or jtivenal plumage; 

 first molt was, however, already in progress. The 

 rows of feathers are quite distinct and the distinctness 

 is not overdrawn in the figure; a little less distinct than 

 in the stock-dove (see text-figure 4). 



Text-figure 3.— Neck-mark of African owl pigeon, ( '. lurbata; about 3 months old. Natural size. Hayashi del., 1900. 



