8 ON A COLLECTION OF BIRDS 



4. S p il T ni s ha c h a. 



Spilnrnis hacha (Daud.), Gray, List Gen. B. I. Ed. p. 3 (1840); — 



Salvad. Ucc. di Sumatra, p. 173 (1879); — Nicholson, Ibis 



1882, p. 52, and 1883, p. 239. 

 Circaetus bascha, Schl. Valkvogels (1. c), pp. 36, 71, pi. 22; id. Revue 



Accip. p. 113 (1874). 

 Spilornis pallidus, Walden, Ibis 1872, p. 363; — Sharpe, Cat. Birds Br. 



Mus. Vol. I. p. 290, pi. IX (1873) ; — Nicholson, Ibis 1882, p. 52. 



5 specimens (all females). 



»Ins sulphur-yellow, round the eye chrome-yellow, feet 

 dirty whitish yellow. Native name: Alang tampien.'^ 



There are some very interesting differences in color 

 amongst these specimens. The most aberrant of all makes 

 the impression of being a young one , having nearly all 

 the feathers on the upper surface, those of the occipital 

 crest not excluded , more or less tipped witb white , which 

 is still more the case with the greater wing-coverts and 

 the quills. The feathers on chin and throat are almost en- 

 tirely white; those of the chest are brown with a white 

 submarginal streak on each side. On the breast these 

 streaks are represented by longitudinal rows of tolerably 

 distinct white spots. Farther down these spots are very 

 large and distinct , and make the impression of white cross- 

 bars , especially on the thighs and still more on the under 

 tail-coverts. The tail is very broadly tipped with white 

 and has two broad and distinct white bars. The edge of 

 the wing is pure white, the under surface almost entirely 

 white, the under wing-coverts brown, with numerous very 

 large white spots. 



The second specimen differs from the common plumage 

 by having scarcely any white dots on axillaries and wing- 

 coverts, but by the quills and more especially the secon- 

 daries being very broadly tipped with white. The white 

 area on the under surface of the wings is nearly as large 

 as in the preceding specimen. The chest is brown and ver- 

 miculated with a somewhat darker tinge of the same co- 

 lor. The inner white bar on the tail is scarcely perceptible. 



Notes from the Leyden Museum, ^^ol. IX. 



