CLASSIFICATION. 



Breast and abdomen not white, but ashy- 

 grey ; throat white. 



c. 3 Larger ; wing, 9.9-10.15 inches ; greater 

 part of inner web of primaries white . . 



d. 3 Smaller ; wing, under 9 inches ; inner 

 web of primaries ashy-brown, not white 



d" . Breast and abdomen white. 



e 3 . Under wing-coverts for the most part 

 white, excepting for a more or less 

 broad marginal border of black or 



slaty-grey. 



a*. Inner webs of primaries con- 

 spicuously white. 



a 5 . Axillaries white. 



a 6 . Head black, contrasting 

 with the grey back 



a 7 . Black extending down 

 the neck on to the 

 sides of the breast ; 

 a distinct marginal 

 band of black on the 

 under wing-coverts 



V. Sides of neck and 

 upper breast grey ; 

 the black band round 

 the margin of the 

 wing below narrow 

 and interrupted 



b 6 . Head grey like the 

 back 



c 7 . General colour darker ; 

 bill longer and more 

 slender 



d 1 . General colour paler ; 

 bill shorter and 

 stouter 



gularis, p. 236 ; fisheri, 

 p. 239 ; scalaris, p. 241 



brevipes (dark phase), 

 p. 290 



leucoptera, p. 243 



longirostris, p. 250 



cooki, p. 247 



defilippiana, p. 245 



XLV 



