34 FALCONIDJi. 



under tail-coyerts creamy white ; rest of under surface brown, with 

 huffy white margins to the feathers ; the upper breast-feathers 

 broadly streaked with buffy white down the centre. 



Hah. The extreme southern States of North America, adjoining 

 the Gulf of Mexico, and including California and Florida, thence 

 throughout Central America into Southern America, through Co- 

 lumbia to Ecuador on the west, and into Guiana on the east coast ; 

 Cuba, Trinidad. 



a. Ad. St. British Guiana. Sir R. ScLomburffk [P.]. 



h. Ad. St. Island of Puna. G. Barclay, Esq. [P.]. 



f. Juy. sk. ? 



d. Ad. sk. Valencia, Venezuela. A, Goering, Esq. [C.]. 



12. IBYCTER*. 



Tyiie. 



Ibycter, VieHl. Analyse, p. 22 (1816) I. americanus. 



Daptrius, Vieill. Anali/se, p. 22 (1816) I. ater. 



Gymnops, Spix, Av. Bras. i. p. 11 (1824) I. ater. 



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



PhalcobiBnus, Lafr. in UOrb. Did. iii. p. 161 (1843) I. megalopterus. 

 Senex, J. E. Gray in Jard. 4" Selby, III. Orn. n. s. 



pi. 24 (18.39) I. australis. 



Aetriorchis, Katip, Classif. Siiug. u. Vog. p. 124 (1844) I. australis. 

 Helotriorchis, Reich. Av. Syst. Nat. pi. xcviii. (1850) I. australis. 



Bill of Ibycter ater. 

 Range. The entire continent of South America with Tierra del 



* Ibycter gymxocephalus. 



Ibycter gymnocephalus, B' Orbigny, Voy. Am. Merid. Zool. p. 50(1835) ; 

 Strickl. Orn. tiyn. p. 24 (1855) ; Gray, Hand-l. i. p. 5 (1869). 



H(0}. Coohabamba, Bolivia. 



A species of which examples were only seen but never procured by D'Orbigny ; 

 so that no type is in existence. 



Ibyctee fasciatus. 



Gymnops fasciatus, Spix, Av. Bras. i. p. 10, pi. 4 (1824). 

 Circaetus fasciatus, Cuv. Beync An. i. p. 338 (1828). 

 Pandion fasciatus, Gray in Griffith ed. Cuv. Birds, i. p. 41 (1829). 

 Pandion strigilatus. Gray, torn. cit. p. 42 (1829). 

 Caracara fasciatus, Less. Traite, p. 35 (18.31). 



Ibycter fasciatus, Gray, Gen. B. i. p. 9 (1844); StricH. Orn. Syn. p. 23 

 (1855); Gray, Hand-l. i. p. 5(1869). 



Hab. Jurua river, Brazil (Spix). 



Unrecognized since Spis's time. If distinct, it must be closely allied to /. ater, 

 but has the base of the tail much more extensively white with broad blacli bar.s. 



