/ 
^ Key to the Species. 
A. Larger ; wing, 151 mm. ; tail, 131 ; primary quills 
chestnut, tipped with black P, rufipennis, p. 159. 
B. Smaller ; wing, 135 mm. ; tail, 120 ; primary quills 
white, tipped with black P. alUpennis^ p. 157. 
1 
I 
156 
