258 
AQUILIDjE. 
Gypoictinia melanosterna decepta Mathews, Nov. Zool. vol. xviii. p. 250, 
Jan. 31st, 1912: Parry's Creek, North-West Australia. 
Distr. —Interior of Western Australia. 
Genus HENICOPERNIS Gray. 
Henicopernis Gray, Proc. Zool. Soc. Lond. 1859, p. 153. Type (by 
monotypy) : Falco longicaudus Garnot. 
Henicopernis longicauda (Garnot). 
Distr. —Aru Island, New Guinea to New Britain. 
Henicopernis longicauda longicauda (Garnot). (1-341.) 
Falco longicaudus Garnot, Voy. * Coquille,’ livr. 7, pi. 10, 1828, 
livr. 13, p. 588, 1829: New Guinea. 
Milvus striatus Diggles, Trans. Phil. Soc. Q’land, vol. ii. p. 1. 1874 : Queensland, 
error=Aru Islands. 
Distr .—New Guinea, Aru, Salwatti, Waigou, Mysol, and Misori. 
Henicopernis longicauda infuscata Gurney. 
Henicopernis infuscata Gurney, Ibis, 1882, p. 128 : New Britain. 
Distr. —New Britain. 
Genus MACH^ERHAMPHXJS Westerm. 
Ma chwrh amp hits Westerman, Bijd. tot d. Dierk. vol. i. p. 29, 1848. 
Type (by monotypy) : M. alcinus West. 
Machaerhamphus alcinus Westerm. (1-342.). 
Macluerhamphus alcinus Westerman, Bijd. tot d. Dierk. vol. i 
p. 29, pi. 12: Moluccas. 
Distr .—New Guinea. Extra-limital. 
Genus PERNIS Cuvier. 
Fernis Cuvier, Regne An. vol. i. p. 322, 1817. Type (by mono- 
typy) : Falco apivorus L. 
Pernis celebensis Wall. 
Perms celebensis celebensis Wallace. (1-349.) 
Pernis enttatm var. celebensis Wallace, Ibis, 1868, p. 17 : Celebes. 
(1 ig. M. & W. pis. 2 & 3.) 
Distr. —Celebes. 
Genus EL ANUS Savigny. 
Elanvs Savigny, I)escr. Egypte, Hist. Nat. vol. i. p. 69,1809 Tyne 
(by monotypy) : E. ccetius = Falco melanopterns Daudin.’ 
