Northern Portion of the Malay Peninsula. 
23 
48. Spizaetus limnaetus. 
Spizaetus limnaetus (Horsf.); Sharpe, tom. cit. p. 272. 
An adult male in the melanotic phase, exactly agreeing 
with Horsfield's type of the species from Java, was collected 
on January 12th, 1910, at Lam-ra. 
The species is fairly common throughout the Peninsula, 
keeping to low country and to the lower ground, while the 
smaller and handsomer S. alboniger is found on the hills and 
in deep jungle. 
49. SPILORNrS PALLIUUS. 
Spilornis pallidus (Walden) ; Sharpe, tom. cit. p. 290, 
pi. ix. 
After examination of a large series of specimens from the 
whole Malay Peninsula, we are forced to the conclusion that 
only one form is represented, and that, although it does not 
precisely agree with any definite species, it comes nearest 
to S. pallidus of Walden from Borneo. That, however, was 
described on the strength of an extremely young specimen 
which does not shew the real characters of the species. 
The series before us varies greatly both in general intensity 
of coloration and in the nature and intensity of the spots 
on the lower surface, which in the majority of the specimens 
are numerous and somewhat ill-defined at the edges, in this 
respect approaching S. rutherfordi , originally described from 
Hainan, but apparently spread all over Indo-China. Some 
specimens, however, notably one from the Larut Hills, 
Perak, are very much darker, almost approaching Javan 
birds ( S . bido Horsf.). The whole genus stands greatly in 
need of revision. 
50. Butastur indicus. 
Butastur indicus (Gm.) ; Sharpe, tom. cit. p. 297. 
We have obtained this species twice from Langkawi, in 
November 1907 and February 1909. 
51. Haliaetus leucogaster. 
Haliaetus leucogaster (Gm.).; Sharpe, tom. cit. p. 307. 
The White-bellied Sea-Eagle is found throughout the 
