FALCONID^. 



37 



orange : the quills dusky, internally margined with 

 white at the tips ; the secondaries slightly sprinkled 

 with rust-colour, beneath white : the tail-feathers 

 ashy-black, all but the two middle ones internally 

 edged with white, beneath white : legs yellow : claws 

 black : irides hazel. 



STIRPS III.— FALCONINA. (FALCONS.) 



Rostrum hreve, a basi aduncum ; alae longcE ; remex secunda 

 longissima. 



Beak shortj hooked from the base ; tjoings long ; the second quill 

 largest. 



GENUS XXIII— lERAX, Vigors. 



Rostrum breve; mandihula 

 superior fortiter bidentata, 

 inferior simpliciter emar- 

 ginata. 



2'arsi mediocres ; acrotarsia 

 scutellata. 



Aloe breves; remex secunda 

 longissima, leviter intern^ 

 prope apicem emarginata. 



Beak short ; the upper man- 

 dible strongly bidentate, 

 the under simply emar- 

 ginated. 



Tarsi mediocral ; acrotarsia 

 scutellated. 



Wings short, the second quill 

 longest, slightly emargi- 

 nated internally near the 

 tip. 



Sp. I. le. cserulescens. 



Falco cserulescens. ShaiOj v. vii. p. 208. pi. 27* — India. 



GENUS XXIV.— FALCO Auctorum. FALCON. 



Rostrum breve ; mandihula 

 superior fortiter dentata, 

 inferiore emarginata. 



Acrotarsia reticulata. 



Beak short, the upper man- 

 dible strongly dentate, the 

 under emarginate. 



Acrotarsia reticulated. 



