170 



ZOSTEROPS. 



KEY TO THE SPECIES. 



Under tail-coverts yellow. 

 a 1 . Throat yellow ; upper parts yellowish green. 

 a 2 . Breast not contrasting strongly with the 

 throat. 

 a 3 . No olive shade on the flanks, which 

 are golden yellow or chestnut. 

 ft 4 . Some chestnut on the flanks. 



a 5 . Forehead olive like the crown . . scmiflava. 

 b 5 . Forehead bright yellow .... mayottcnsis. i 

 b*. No chestnut on the flanks. 



c 5 . Paler, sides of forehead lemon 

 yellow (Africa). 

 ft . Smaller; wing about 2-2 inches, senegalensis. 

 b e . Larger; wing 2-3 to 2-4 (S. 



Africa) andcrssoni. I y 



d 5 . Darker, sides of forehead tinged 

 with orange (Gt. Comoro Is.). 

 c 6 . Smaller; wing 2-0 to 2-1 ; white 



eye-ring broader kirki. ' 7 



d a . Larger; wing 26; white eye- 

 ring narrower motcroniensis. 1 7 f 



b 3 . Sides of body shaded with olive. 

 c 4 . White eye-ring narrower. 



c 5 . Larger; wing 2-3; darker and 

 greener ; not more than the sides 

 and front of the forehead yellow, virens. 

 f 5 . Smaller ; wing 2-1 ; paler and 

 yellower ; a partial eyebrow of 

 yellow reaching back to as far as 



posterior edge of eye stenocricota. 



d*. White eye-ring broader. 



g 5 . Forehead with no yellow, but a 



faint chestnut shade on the sides, curycricota. 

 h s . Forehead yellow. 

 e 6 . Yellow extends back as far as 

 posterior margin of eye ; front 

 half of crown yellow .... kikmjuensis. I I 

 J' 6 . Yellow extends back as far as 



