THE PROBLEM OF THE ORIGIN OF SPECIES. 



17 



TEXT-FIGURE 1. Adult barred rock-pigeon (Columba livia), male No. 0. x 0.75. Hayashi del., Oct. 1904. 

 DESCRIPTION OF BARS AND SIZE or SPOTS, OCTOBER 1904. 



(As I do not find 14, and as there seem to be no missing secondaries, I think that the first upper 

 tertial is the missing feather. No. 7 can be reckoned either to tertials or to secondaries. 



