RECORDS VOLUME XII, FEB. 1920. ail 
In the adult male Arkansas Kingbird the 
outer primary ts incised for a long distance, 
leaving the tip very narrow and a little fal- 
cate. Then each successive feather, respectiv- 
ly, is a little less incised and curved to the 
dth which is practically the last one incised. 
Fig. 1 A. The adult female has similar char- 
acters but slightly less pronounced. 
In the young bird, however, only the out- 
er primarv is at all incised, and this not as 
much as the 5th in the adult. In adults the 
3d and 4th feathers are the longest. the 2d 
shortest, the lst little shorter, and the 5th 
considerably so, see fig. | A and plate 2 B a. 
In the young the oth is actually the short- 
est, but is longer proportionately than in the 
adult. The outer feather is next longest, but 
the 2d, 3d, and 4th are equal in length, Fig. 
1 Cand plate2 Be. Thus the wing in the 
two ages has a very different form, that of 
the young probably being ancestral. 
In the adult the outer tail feather is nar- 
rowed considerably at tip, suggesting the be- 
