THE TURTLE-DOVE PATTERN IN THE PHYLOGENY OF PIGEONS. 



89 



The following detailed description of the several individuals figured will supply 

 some of the evidence for the above conclusions: 



Text-figure IS. — Wing of Juvenal Geopelia striata, 18 days, x 2. Hayashi del., July 1899. 



This is stage corresponding with pi. 88 of Geopelia cuneata; pi. 41 of hutneralis; text-fig. 31 of tranquiUa. 



The third and fourth rows of coverts are so close together that they scarcely seem to be set off from the smaller 

 coverts. At this stage I saw two pin-feathers of the oblique streak coming in, in front of the fourth row as nearly 

 as I could tell. They came in along the same line as in G. cuneata. In this specimen the terminal yellow edging is 

 repeated as a cross-bar in front of the black bar, and quite distinctly. In the mate of this bird the repeated yellow 

 bar was not so plain. The black streaks are quite pronounced on lower edge of the feather, and some feathers have 

 double streaks, upper as w-ell as lower. 



Text-figure 19. — Wing of Juvenal Geopelia striata, 28 days. Same bird as text-fig. 18. X 2. 



Hayashi del., July 1S99. 



Compare with 28-day wings of Geopelia tranquiUa, text-fig. 32; G. hutneralis, text-fig. 20; G. Cuneata, pi. 88. In 10 

 days we find the third and fourth bars have been covered by the oblique streak of feathers that had but just begun to 

 appear in the 18-day stage, 10 unfolded feathers and 5 new pin-feathers appearing. The latter and others that will 

 soon come into sight will unfold and lengthen until the second row is covered. We see also about 6 feathers added to 

 the scapulars on the lower side. These are black-edged, the black being deeper than in the earlier feathers. These 

 new feathers still show the yellow cross-bar in front of the black. They do not quite reach the adult condition. They 

 are still only partly grown. 



The head, neck, and breast of two adult Geopelia striata are shown in the figures. 

 One represents the normal type (pi. 37, fig. A), the other (pi. 38) is atavistic and 

 more like the young (pi. 38, and text-figs. 18, 19). 



