32 CATALOGUE OF THE BIRDS OF PREY. 



Leucopternis princeps, S. & S.: Costa Rica. — Type figured 

 P. Z. S. I860, pi. xxiv. Cf. Ibis, 1876, p. 67. 



Leucopternis occidentalis, Salvin : Ecuador. — More plum- 

 beous than L. albicoUis. Ibis, 1876, p. 496. 



Leucopternis plumbea, Salvin : Central America. — Ibis, 

 1876, p. 475. 



Rostrhamus hamulus : Illiger. — Inhabits the northern 

 countries of South America, and is distinguished from 

 R. sociabilis by its smaller size and more plumbeous color- 

 ation. Ibis, 1879, p. 338. 



Pernis tweeddalii, Hume : Sumatra and Malay Peninsula. — 

 Figured in ' Stray Feathers/ x. p. 513. Cf Ibis, 1880, 

 p.213. 



yRegerhinus wilsoni, Cassin. — Peculiar to Cuba, where 

 Stolzmann says it is known under the name of " Caracollero," 

 or Snail-bird. Ibis, 1880, p. 321. 



Spiziapteryx circumcinctus (Kaup). — A small white-rumped 

 Hawk with an amber eye, found in the Argentine Republic, 

 figured in 'The Ibis' for 1862, p. 23. About five more 

 have been obtained since my father's remarks were published 

 (Ibis, 1881, p. 275), at which time only three were known. 



Spilornis panayensis, Steere. — Inhabits Negros Island and 

 Panay in the Philippines (Ibis, 1891, p. 305), but Mr. W. E. 

 Clarke has pointed, out that S. holospilus is also found in 

 Negros (Ibis, 1894, p. 534). Two of S. holospilus sent my 

 father by Mr. A. H. Everett from Zamboanga and South 

 Leyte are an inch less in the wing than our other four 

 specimens, and smallness is one of the characters given by 

 Dr. Steere for S. panayensis, but they are not any paler. 



