100 



245. Rostrhamus hamatus Temm., PI. Col., i., pi. N. Brazil, 

 61,231(1823). [Brazil.^ [= B. leucopygus Guiana? 

 (Spix) of Sliarpe.] Colombia ? 

 Slender-billed Kite. 



Gen. LXX. REGERHINUS Kaup (1845). 

 [=Leptodon, Sudev. of Sharpe.] 



Tail rounded, outer feather shorter than middle one ; 

 loral space bare ; upper mandible without a tooth. 



Length ad. $ 17 ; wing 11.7 ; tail 7.5. in. ; 

 above and below bluish slate, with narrow 

 irregular bars of white below ; primaries 

 black i»h shaded with slate grey ; secondaries 

 whitish below, barred and tipped with black ; 

 tail ashy grey with 2 bands of black ; under 

 tail-coverts buff ; bill black. First mature 

 plumage generally browner, with a rufous 

 collar round hind neck ; below banded with 

 tawny rufous and ochraceous buff. 



246. Begerhinus uncinaius uncinatus (Temm.), 

 PI. Col., i., pi. 103-5 (1824). ' [Brazil=Rio 

 Janeiro, apud Chubb, type in Leyd. Mus.] 

 Hook-billed Kite. 



Guiana, 



Venezuela, 



Brazil, 



Bolivia, 



Trinidad, 



Centr. Amer. 



Larger (wing § 12.6) and with a larger bill 

 (culmen 2-2.5 in. against 1.55-1.65 in. in 

 typical form). 

 246a. Begerhinus uncinatus megarhynchus (Des E. Peru, 

 Murs), in Casteln., Voy., Ois., p. 9, pi. i. 

 (1855). [Sarayacu, type in Paris Mus.] 

 Large-billed Kite. 



Wing ad. 9.70-10.50 in. ; tail black with 4 

 light bands, the 2 anterior ones white, others 

 light ash grey ; below white, barred with 

 pale grey anteriorly and umber posteriorly 

 (Ridgway). 

 246b. Begerhinus uncinatus wilsoni (Cass.), Jnl. Cuba. 

 Acad. Philad., i., p. 21, pi. 7 (1847). [Cuba.] 

 Wilson's Kite. 



Gen. LXXI. LEPTODON Sundev. (1835). 



The upper mandible with a single more or less pro- 

 nounced tooth. 



