Mr. R. B. Sharpe’s Catalogue of Accipitres. 218 
A fourth Sumatran example*, and by far the most re- 
markable that has come under my notice from that island, 
was observed at Sockedana, in South-eastern Sumatra, and 
was described in ‘The Ibis’ for 1877, p. 286, by the late 
Lord Tweeddale. 
When I examined this curious and unusually marked spe- 
cimen, I noted a few details respecting it which are not re- 
ferred to in Lord Tweeddale’s description, and which, I think, 
may be worth recording as supplementary to it. The black 
plumage of the head, except the dark grey lores, and also of 
the back and sides of the neck, is varied by the feathers having 
pure white bases; the dark brown of the mantle shows three 
distinct shades of that colour disposed in transverse bars on 
each feather ; the feathers of the upper tail-coverts have the 
bases white, succeeded by a dark brown bar, then by a very 
narrow white one, next by one of light brown, and after that 
by asubterminal one of dark brown, followed by a narrow 
white tip; the whole of the under surface posterior to the 
upper breast (except the flanks) is regularly and transversely 
barred, as low as the vent, with alternate bands of brownish 
black and of white, the latter below the breast being tinged 
with buff; below the vent, and somewhat higher on the flanks, 
the dark transverse bars become broader than those which are 
buffy white, and this disparity gradually increases down to the 
tips of the under tail-coverts ; the white bars on the under 
wing-coverts assume the form of two pairs of spots on each 
of the feathers next the primaries. The pattern of the mark- 
ings on the under surface of this specimen shows a remarkable 
resemblance to the corresponding markings in Pernis cele- 
bensis ; but the transverse abdominal bands are considerably 
broader than in that species. Lord Tweeddale gives the 
* In referring to this specimen, I cannot refrain from alluding, with 
great regret, to the loss of two kind and valued friends of mine, the late 
Mr. E. C. Buxton, by whom it was obtained in Sumatra, and the late 
Lord Tweeddale, by whom it was described in the pages of ‘ The Ibis,’ 
both of whom have been removed from amongst us since the publication, 
in ‘The Ibis,’ of Lord Tweeddale’s paper on Mr. Buxton’s Sumatran 
collection. 
