428 
Mr. J. H. Gurney’s Notes on 
as specifically distinct, tlie paler must stand as Limnaetus 
caligatus (Raffles), and the fuliginous as L. horsfteldi (Vigors). 
The irides in both races are said by Dr. Bernstein to be 
dusky brown; Dr. Horsfield, however (probably describing an 
older specimen), speaks of the irides in L. horsfieldi as being 
yellow; those of L. caligatus he does not mention. 
In a living specimen of L. caligatus from Upper Burmah, 
presented to the Zoological Society of London by Captain H. 
Feilden, by whom it was taken from the nest near Thayetmyo 
in May 1871, the colour of the irides and of the plumage was 
thus noted by me when I saw the bird in November 1874:— 
“ Iris hazel; crest very slight; back dark (blackish brown) ; 
breast and abdomen white, with large longitudinal brown 
marks; transverse bars of a lighter brown on the thighs; 
tarsi white ; upper surface of tail dark brown, with four darker 
bars besides the terminal one.” Captain Feilden was so good 
as to inform me that up to the date when he last saw it 
(November 1873) the bird had undergone no change from 
its nestling-plumage, “ except losing the paler edge of the 
wing- and tail-covert feathers common to all Hawk-Eagles.” 
Between November 1874 and October 1875, when the bird 
died whilst moulting, the only change which I observed 
in its plumage was that on the abdomen and flanks the 
dark brown lanceolate marks had considerably extended in 
breadth towards the end of each feather, and also over the 
whole lower part of the feather in some cases, and the greater 
part of it in others. 
The skin of this specimen is now preserved in the Norwich 
Museum; it proved on dissection to be a male. 
Captain Feilden wrote to me that he had frequently shot 
adult males of this species, which were all very similar and 
not unlike the specimen presented by him to the Zoological 
Society, except that the spots on the breast were much fewer 
and smaller. 
I have measured seventeen specimens of L. caligatus from 
Java, Borneo, Malacca, and Nepal*: the largest specimen 
* The specimen from Upper Burmah, described above, is not included 
in these measurements, owing to the imperfect state of its wings. 
