122 journal of the F.M.S. Museums. . (VoL. VIII, 
of A. v. virgatus as stated by Hartert (loc. cit.) though very 
adult specimens we possess from Java have a rather broader 
throat stripe than the others. 
30. Neopus malayensis (Reinw.). 
Neopus malayensis (Reinw.): Sharpe, Cat. Birds Brit. 
Mus. 1. p. 257 (1874). 
Onychaetus malayensis, Vorderman, Nat. Tijd. Nederl. 
Ind. xlix, p. 386, no. 3 (1889). . 
a. ad. Sungei Kumbang, Korinchi, Sumatra, 4,700 
feet, May, 1914. [ No. 1587. | 
Shot in heavy forest. 
Widely distributed throughout the Indo-Malayan region 
but everywhere rather rare and difficult to obtain. 
Spizaetus limnaetus (Horsf.). 
Spizaetus linmaetus (Horsf.); Sharpe, Cat. Birds Brit. 
Mus. 1, p. 272 (1874); Buttikofer, Notes Leyden Mus. ix, p. 10 
(1887); Vorderman, Nat. Tijd. Neder]. Ind. xlix, p. 386, no. 15 
(1889) ; Sharpe, Ibis, 1889, p. 70 (N. Borneo); Hartert, Nov. 
Zool. ix, p. 195 (1902). ; 
Limnaetus caligatus (Raffles); Salvad. Ann. Mus. Civ. Gen. 
rahiZ, 84 267/ (GUS7fo)) 3 Gl, fd, Cues (A) oi joh Ae (acsope)s cl, Jomidl 
Mus. Zool. Turin, xi, p. 2 (1896). 
Spizaetus cirrhatus limnaetus, Parrot, Abh. Konig]. Akad. 
Bayer. (11) xxiv, Bd. 1, p. 158, (1907). 
Spizaetus civrhatus caligatus, Parrot, loc. cit. p. 160. 
a. 6 Pasir Ganting, West Sumatran Coast, Lat. 2S. 
June 18th, 1914. [No. 2017.] 
“Tris brown, feet dirty white with a greenish cast, bill 
black.” 
Fairly common both in the Korinchi Valley and also on 
the mountain, though we did not obtain specimens. 
There is no doubt whatever that the black form Sp. 
limnaetus, and the white breasted form Sp. caligatus are phases 
of one species though it remains to be proved that all the 
dark birds are old and all the young ones white-breasted, i.e. 
the difference being only doubtfully due to age. 
In some localities the dark form is decidedly commoner, as 
in Java, and in other countries, e.g. Peninsular India, the 
light form is the prevalent one. In the Malay Peninsula they 
appear to be about equal in numbers. 
31, Spilornis bacha subsp. pallidus, Walden. 
Spilornis bacha, Salvad. Ann. Mus. Civ. Gen. xiv, p. 173 
(1879); Nicholson, Ibis, 1883, p. 239; Buttikofer, Notes Leyden 
Mus. ix, p. 8 (1887) ; Vorderman, Nat. Tijd. Nederl. Ind. xlix, 
p. 386, no. 7 (1889); Salvad. Bull. Mus. Zool. Turin, xi, p. 2 
(1896). 
Expedition to Korinchi : 
