POLIOPTILA. 441 



Key to the Species *. 



a. No black cap ; the head like the back. 

 «'. No black on the ear-coverts. 



a". Fu'st primary much less than half the second ; 

 outer tail-feather white except at the base ; 

 a narrow line of black skirting the sides of 

 the crown from above the eye, and meeting 

 across the base of the forehead; a white 



eyelid cmrulea, p. 442. 



6". First primary more than half the second ; 

 outer tail-feather black for basal hsilf of inner 

 web ; eyelid whitish ; no black on the fore- 

 head, but a crescentic line behind the ear- 

 coverts lemheyi, p. 444. 



c". First primary more than half the second ; 

 outer tail-feather black for nearly the whole 

 of the inner web ; a black line above the 

 eye, not reaching the bill or the ear- 

 coverts 2)lumhea 5 , p. 451. 



V . Ear-coverts black like the lores and base of fore- 

 head dumicola, p. 444. 



b. A black cap. 



c'. Lores black like the forehead and crown. 

 d' '. Outer tail-feather white, with a black base. 

 a'". No white at the ends of the greater 

 wing-coverts ; white margins of inner 

 secondaries not reaching to the shaft of 

 the feather, but being in the form of a 

 white or grey edging, more or less 

 broad. 

 a*. Black on inner web of outer tail-fea- 

 thers forming a " dii-ectly transverse " 



outline _ leucogastra, p. 446. 



¥. Black on inner web of outer tail-feathers 

 forming an oblique or crescentic out- 

 line. 

 a^. Outer edges of inner secondaries white 

 and distinct. 

 a^. Larger; cuhiienO'o inch : black base 

 of outer feather not concealed by 



under tail-coverts nit/riceps, p. 447. 



b^. Smaller; culmen 0'45 inch: black 

 base of outer feather eutu'ely con- 

 cealed by under tail-coverts parvirostris, p. 448. 



6'. Outer edge of inner secondaries gi'ey, 



very narrow and obsolete, so that the 



wing appears almost entirely black . . sclateri, p. 449. 



b'". Ends of greater wing-coverts white ; inner 



secondaries entirely white on outer web, 



the white reaching to the shaft buffoni, p. 449. 



* Tlie characters for some of the species not in the Museum have been 

 adapted from Baird's ' Eeview.' 



