808 JOURNAL, BOMBAY NATURAL HISfORit SOCIETY, tot. XIV. 



V Tarsus less than 2*5" long C. cineraceus. 



(Montagu's Harrier.) 

 b. Outer web of 5th quill notched. 



c' Straight from end of cere on culmen to tip of 

 bill measures less than 0"75". 



a" Upper parts ashy C. cyaneus (I). 



(The Hen-Harrier) Adult. 



b" Upper parts to rump black C.melanoleucus(2). 



(The Pied Ravriev) Adult, 

 c" Upper parts brown, more or less edged 

 with buif or rufous. 



«•' Upper tail-coverts pure white C. cyaneus (1). 



Adult. 

 6' Upper tail-coverts not entirely white. 

 a^ Coverts along forearm white or 



buif C. melanoleucus(2) 



Adult, 

 h* Coverts along forearm brown. 



a^ Abdomen buff, with darker 



shaft-stripes , C. cyaneus (1) 



Young. 



})' Abdomen rufous-brown C.melanoleucus{2') 



Young, 

 d' From cere on culmen to tip of bill is more than 

 0-75" 

 d" Abdomen white unstriped or buff with 



dark shaft-stripes C. spilonotus. 



(The Eastern Marsh-Harrier.) 

 e" Abdomen dark or rufous-brown, or rufous 



with dark stripes C. ceruginosus. 



(The Marsh-Harrier.) 

 The next two genera Buteo and Archibuteo, comprise 4 species of the birds 

 known as the Buzzards (proper), and are closely allied to the Eagles and from 

 which, as Blanford says, " they chiefly differ structurally by their less 

 powerful bills and claws." 



Key to the Genera. 

 Bill from gape more than half tarsus. 



Lower part of tarsus naked all round Buteo. 



Tarsus feathered in front to base of toes, naked and 



acutellate behind Archibuteo. 



Buteo — Key to the Species. 

 a. Wing more than 16 inches. 



a' Tarsus half- feathered, naked part in front 



acutellate „ B.ferox. 



(The Long-legged Buzzard.") 



