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APPENDIX. 
11. Butastur indicus (Gm.). 
a. Juv. Labuan, Nov. 1885. 
b. $ ad. Labuan, Dec. 9, 1885. 
v. Juv. Benkoka, Oct. 22, 1885. 
[I have observed this species in various parts of Northern Borneo between the end of October and 
the end of March, and it is evidently only a migrant of the N.E. monsoon. During my ascent of Kina 
Balu I found it as high as 1000 feet. It is generally met with in open places. A young male had the 
iris yellowish olive, the feet and cere dull yellow.] 
12. Haliaetus leucogaster (Gm.). 
[Iris hazel ; feet dirty white ; skin on face French-blue. Plentiful all round the coast of Borneo, 
but rarer in Palawan. I found a nest on the 12tli of April with nearly-fledged young. The nest was on 
a dead tree in a forest which had been recently burnt. The nestlings were beautifully speckled, much 
more so than in the full-grown young birds which were afterwards procured. The nest was full of the 
remains of sea-snakes, on which this Eagle frequently feeds. One of my specimens is stained on the 
breast with the ink of the cuttle-fish, which, according to the natives, is also a favourite food of this 
species.] 
13. PoLIOAETUS ICHTHYAETUS (Horsf.). 
3 ad. Benkoka, Sept. 6, 1885. 
[Iris light hazel ; feet greyish blue ; bill black. Brought to me alive by a native.] 
14. Haliastur intermedius, Gurney. 
[A young male from Tampassuk had the bill and feet dull greenish yellow. Although I did not 
bring a specimen from Kina Balu, the bird is found there up to 1000 feet. It is a great robber of 
chickens, and is much detested by the natives.] 
15. Pernis ptilonorhynchus (T.). 
[Iris light straw-yellow ; feet yellow. All the Bornean and Palawan birds are old, with grey faces, 
and two of them have large crests. They are inhabitants of the forest, but do not extend above 1000 feet 
on Kina Balu.] 
16. Microhierax latifrons, feharpe. 
$ ad. Benkoka, Sept. 30, 1885. 
17. Falco communis (Gm.). 
[Only found during the N.E. monsoon.] 
18. Cerchneis tinnunculus (L.). 
An immature male, apparently of the dark Chinese form. 
[This species is evidently very scarce, and I only noticed it on the large plains of Tampassuk.] 
Suborder P AND I ONES. 
19. Pandion haliaetus (L.). 
These birds belong to the large form of Osprey and not to the small Australian race. 
[The first female had the iris yellow ; bill black, slaty blue at base of lower mandible ; cere slaty 
blue ; feet white, with a pale bluish tinge ; claws black. I think that the Osprey is a migrant in Northern 
Borneo.] 
Suborder STRIGES. 
Family Bubonida:. 
20. Ketupa ketupa (Horsf.). 
$ ad. Benkoka, Nov. 12, 1885. 
[Shot in the forest in open places near the paddy-fields in Northern Borneo. I never met with it in 
my Kina Balu expeditions. Iris pale greenish yellow ; bill and feet brownish yellow.] 
