508 ACCIPITRES. 



Nauclerus riocouri, Strickl. P. Z. S. 1850, p. 215: Sharpe, 

 Cat. B. i. p. 318. 



a Kordofan, 5 August (J. Petherick] 1848. 



SUBFAMILY. HERPETOTHERIN^S. 



HERPETOTHERES. 



Herpetotheres, Vieillot, N. Diet. d'Hist. N. xviii. p. 317 (1817) 

 (cf. Strickl. Ann. & Mag. N. H. vi. p. 415). 



2480. Herpetotheres cachinnans. 



Falco cachinnans, Linn. Syst. Nat. i. p. 128. 

 Herpetotheres cachinnans, Strickl. Orn. Syn. p. 75: Sharpe, 

 Cat. B. i. p. 278. 



a Island of Mexiana, November (A. TF.) 1848. 

 One of Mr A. R. Wallace's specimens. 



SUBFAMILY. POLYBORIN^E. 



IBYCTER. 

 Ibycter, Vieillot, Anal. p. 22 (1816). 



2481. Ibycter americanus. 



Aigle d'Amerique, D'Aub. PI. Enl. 417, unde, 

 Falco americanus, Bodd. Tabl. PI. Enl. p. 25. 

 Ibycter americanus, Strickl. Orn. Syn. p. 22: Sharpe, Cat. B. 

 i. p. 35. 



a Guatemala (J. Constancia) 1851. 



MlLVAGO. 

 Milvago, Spix, Av. Bras. i. p. 12 (1824). 



2482. Milvago chimachima. 



Polyborus chimachima, Vieill. N. Diet. d'Hist. N. v. p. 259. 



Milvago chimachima, Strickl. Orn. Syn. p. 19. 



Ibycter chimachima, Sharpe, Cat. B. i. p. 39. 



a Brazil (Bt at Birmingham] 1844. b (Arthur Strickland}. 



