17 



54. 



Plumage slaty blue, with little trace of white 



cross bars except on thighs and under wing- 



coverts ; tail ochraceous, with 2 broad black 



bands. 



Geranospizias ccerulescens ccerulescens (Vieill.), 



N. Diet., X., p. 318(1817). 



Grey Crane -Hawk. 



Under parts barred with whitish. 

 54a. Geranosinzias ccerulescens gracilis (Temm.), PI. 

 Col, i., pi. 91 (1824). 

 Wood Hawk. 



Like G. c. ccerulescens, except that general 

 plumage is slaty black. 

 Sib. Geranos'pizias ccerulescens niger (Du Bus), Bull. 

 Ac. Roy. Brux., xiv., p. 103 (1847). 

 Black Hawk. 



Venezuela, 

 Guiana, 

 W. Brazil, 

 Peru, Bolivia 

 Argentina. 



Brazil, 

 Paraguay. 



Central 

 America from 

 S. Mexico to 

 Panama. 



Gen. XXI. UROTRIORCHIS Sliarpe (1874). 

 Tail (13 in.) longer than wing (12 in.), very strongly 

 graduated ; size large (length 24 in.). 



Above blue grey, lighter on head and nape ; 

 upper tail-coverts pure white ; tail very long, 

 black above, greyish below, irregularly banded 

 and tipped with white ; below leaden grey. 



55. Urotriorchis macrurus (Hartl.), J.f.O., 1855, W. Africa, 

 p. 353. Gold Coast 

 W. African Grey Hawk. to Gaboon. 



Gen. XXII. PARABUTEO Ridgw. (1874). 

 Nostrils with bony tubercle near upper margin ; 

 thighs with overhanging tuft of feathers ; tarsus 

 sealed almost right across and feathered further 

 down than length of middle toe. 

 Size large (length about 23 in. ; wing about 12-14 in.). 



General colour blackish brown, variegated by 

 lighter spotting ; lesser wing-coverts and 

 thighs rufous ; tip and base of tail and also 

 tail-coverts white. 



56. Parabuteo unicinctus unicinctus (Temm.), PI. S. America, 

 Col . . pi . 3 1 3 ( 1 824) . northward 

 One-banded Buzzard-Hawk from Chile 



on W. and 

 Buenos Ayres 

 on E. 



