10 



Sub-Fam. II. ACCIPITRIN^. 



Outer toe connected to middle one by an interdigitnl 

 membrane ; tibia and tarsus about equal in 

 length. 



Gen. XVII. POLYBOROIDES Smith (1830). 

 Lores and sides of face bare. 



Plumage silvery grey, lower back and rump 

 and abdomen white, narrowly barred with 

 black ; quills and tail chiefly black, latter 

 with a broad median band of white. Length 

 23.50-27 in. 



31. Polyborides radiatus (Scop.), Del. Faun, et Flor, Madagascar. 

 Insubr., ii., p. 85 (1786). 



Madagascar Gymnogene. 



General plumage dark grey ; breast and 

 abdomen broadly barred with black and 

 white ; tail black, tipped with white, with a 

 broad band of dull white and an indistinct 

 one nearer base. 



32. Polyborides typicus Smith, S. Afr. Q. J., i., S. Africa, 

 p. 107 (1830). W. Africa, 

 Bandecl Gymnogene. N.E. Africa 



(Abyssinia & 

 Wlnte Nile). 



Gen. XVIII. CIRCUS Lacep. (1806). 



Sides of face feathered ; with distinct facial ruff ; 

 lores furnished with bristles ; nostrils oval Avith 

 no bony excrescence ; tarsus reticulated behind ; 

 size moderate ; length (males) 17-22.50 in. ; 

 females 19-24.50 in. 



Key to Natural Groups and Species (Males). 

 A. Above bluish ashy, or greyish, 

 a. Thighs uniform white. 



Throat and chest bluish ashy ; upper tail- 

 coverts white. 

 33. Circus cyaneus cyaneiis (Linn.), S.N., i., p. 126 

 (1766). " 

 Hen Harrier. 



Europe and 



Siberia, N.E. 



Africa, India, 



China, Japan 



(winter). 



