64 



Bill and wing of Prionochiliis ignicapillus. 



Key to the Species. 



a. Plumage particoloured, with triglit colours 

 either above or below. 

 a'. A spot of bright scarlet or orange in the 

 centre of the crown. 

 a". Upper surface slaty blue ; a patch of 

 scarlet on the chest. 

 a'". Rump blue-grey or slaty blue like the 

 rest of the upper surface. 

 a*. Chin and upper throat white ; rest of 



under surface bright yellow percussus, p. 65. 



6*. Entire throat bright yellow like the 



rest of the under surface iffnicaptUus, p. 65. 



b'". Rump yellow; back slaty blue xanthopn/gius, p. 66. 



h". Upper surface olive-j'ellow ; head black 

 like the throat ; a patch of scarlet on the 



lower throat and fore neck tlioracicus, p. 67. 



c". Upper surface entirely olive-yellow; chest 



with dusky olive streaks maailatiis, p. 69. 



h'. Crown of head uniform. 



d". Ko white ends to the outer tail-feathers. 



c'". Head black ; centre of back scarlet . . quadricolor, p. 70. 

 d'". Upper surface olive-yellow ; throat 

 and breast ashy white ; sides of body 

 yellow. 



c*. "Larger : flanks bright yellow aiireoliynlatus, p. 70, 



(Z*. Smaller: flanks paler yellow sanghirensis, p. 71. 



e". Outer tail-feathers tipped with white. 

 e'". Larger ; wing 2-.55-2'85 inches : sides 

 of neck slaty gi'ey, descending along 



the sides of the breast melano.vanthus, p. 71. 



f". Smaller ; whig 2'l-2-35 inches : sides 



of breast yellow like flanks vincens, p. 72. 



h. Plumage plain ; no bright colours on back or 

 breast, 

 c'. With more or less distinct streaks on the 

 breast. 



