28 ACCIPITRES DIURNI. 



Haliaetus leucosternus Gould, Proc. Zool. Soe. (1837) p. 138. ; 



Syn. of B. of Austr. pt. iii. p. . pi. f. 1. 

 Haliaetus (Ictinoaetus) leucosternon Kaup, Isis, (1847) p. 276. ; 



Gould, B. of Austr. pi. 



a. Australia. Presented by Lady Carrington. 



b. Australia. 



c. d. Port Essington. Presented by J, B. Jukes, Esq. 



3. HALIASTUR SPHENURUS. The whistling Hawk. 



Milvus sphenurus Vieill. N. Diet. d'Hist. Nat. xx. p. 564. ; Gal. des 



Ois. t. 15. ; Swains. Classif. of B. ii. p. 211. 

 Halaetus canorus Vigors and Horsf. Linn. Tr. xv. p. 187. ; Syn. 



ofB. of Austr, pt. iii. p. .pi. f. 2. 

 Haliastur ? sphenurus Gould, B. of Austr. pi. 

 Haliaetus (Ictinoaetus) canorus Kaup, Isis, (1847.) p. 277. 



a. Australia. Presented by Lady Carrington. 



b. South Australia $ . Presented by His Excellency Capt. 



Grey. 



c. Port Essington. Presented by Dr. Sibbald, R.N. 



d. Port Essington. Presented by J. Jukes, Esq. 



e. Interior of S. Australia. Presented by Capt. Sturt. 



/. North Eastern Australia. Presented by Sir T. M. Mitchell. 



ii. POLYBORIN^. 

 1. IBYCTER. 



Ibycter Vieill. Analyse &c. p. 22. (1816.) 

 Daptrius Vieill. Analyse &c. p. 22. (1816.) 

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



IBYCTER AMERTCANUS. The red-throated Falcon. 



Falco americanus Bodd. Table des PL enl. de D'Auben. p. 25. 



Falco aquilinus Gmel. S. N. i. p. 280. 



Falco nudicollis Daud. Tr. d'Orn. ii. p. 79. 



Falco formosus Lath. Ind. Orn. i. p. 38. 



Ibycter leucogaster Vieill. Encyc. Meth. p. 1183. ; Gal. des Ois. t. 6. 



Polyborus (Daptrius) nudicollis Kaup, Classif. der Saug. und 



Vdg. p. 124. 



PL enl. 417. 



