APPENDIX. 
.251 
however, 1 collected some beautiful specimens of both sexes whilst they were feeding on some fruit-bearing 
trees only a few feet from the ground. 
The racket tail-feathers apparently grow without the web on the shaft, as in some immature feathers 
•the stem was still buried in the shell and bare, whilst in the young of both sexes- the short shafts are 
slightly webbed ; so that it would seem that the bird does not itself destroy the web of the two centre tail- 
feathers, as the Motmots are known to do. 
Eye black ; bill dull white ; feet greenish. 
4. Astur trivirgatus (T.). M., P. 
5. SrizAETUs limnaetus (Horsf.). M. 
6 . Spizaetus philippinensis (Gurney). P. 
7. Butastur indicus (Gm.). *. 
12. Hypotriorchis severus (Horsf.). *. 
I met with this little Hawk several times on the sea-coast, and often started before daylight to a point 
on the coast where it used to pass, but unfortunately never got within shot. 
13. Circus spilonotus, Kaup. *. 14. Pandion haliaetus (L.). *. 
15. Baza leucopais, sp. n., Sharpe. 
Juv. Similis B. sumatrensi, jr., sed subtus alba ; linea mediana gutturali nulla, abdomine minime 
transfasciato distinguenda. 
Adult female. General colour above brown, with whitish-brown margins to the feathers ; lesser wing- 
coverts brown, the inner ones rufous, with brown centres ; median and greater coverts pale rufous, white 
externally towards the ends and round the tips; bastard-wing dark brown, externally rufous ; primary- 
coverts uniform dark brown ; quills dark brown, fringed with white round the ends, and crossed with 
blackish-brown bars, four in number, one subterminal ; secondaries paler brown, externally rufous ; upper 
tail-coverts tawny rufous, edged with white and with dark brown centres ; tail-feathers dark brown, 
narrowly fringed with white at the ends, and crossed with blackish bands, the subterminal one very broad, 
but not nearly so wide as the preceding interspace; a crest of white feathers, the long ones freckled wdtli 
brown ; head, nape and hind neck, lores, sides of face, ear-coverts, cheeks, sides of neck, and entire under 
surface of body pure white, slightly washed with rufous on the head and hind neck ; the breast, abdomen, 
and under tail-coverts washed with creamy buff; the sides of body and flanks with slight indications of 
spots of pale tawny buff; under wing-coverts and axillaries like the breast ; quills below ashy grey, with 
blackish bars on the primaries. Total length 1.5'5 inches, culmen 1*15, wing 10*8, tail 7*0, tarsus 1*4. 
The typical specimen, though manifestly immature, differs thoroughly from the young of B. suma- 
trensis, and I feel sure that the adult bird, when discovered, will be markedly distinct. 
If this species is confined to Palawan, it will be interesting to find a strong-winged bird keeping to 
such a limited area. I rather expect that it will be met with in the Philippines, which are so near to the 
eastern parts of Palawan. 
16. Syrnium whiteheadi, sp. n., Sharpe. 
S. similis S. sinensi, sed subtus minime albo transfasciatum. 
Adult male. General colour above chocolate-brown, sj>otted with white, the spots arranged in pairs, 
the one on the inner web often fulvescent ; scapulars forming a light patch of tawny buff, covered with 
narrow bars of chocolate-brown ; lesser wing-coverts dark chocolate-brown, with scarcely any white spots; 
median and greater coverts more reddish chocolate-brown, transversely barred with white, slightly tinged 
with tawny buff; bastard-wing and primary-coverts uniform blackish brown ; quills brown, crossed with 
lighter and more rufous-brown bars, whiter near the edge, especially of the secondaries, which are slightly 
freckled externally ; the innermost secondaries spotted with white, like the back ; upper tail-coverts like 
the back, but barred with tawny buff or whitish ; tail-feathers dark chocolate-brown, barred with tawny 
2x2 
8 . Haliaetus leucocaster (Gm.). M., P. 
A. Spilornis bacha (Daud.). M., P. 
10. PERNIS PTILONORHYNCHUS (T.). M. 
11. Falco communis, Gm. *. 
