428 Mr. J. H. Gurney's Notes on 



as specifically distinct, the paler must stand as Limnaetus 

 caligatus (Raffles) , and the fuliginous as L. horsfieldi (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 iJm'mah, described above, is not included 

 in these measurements, owing to the imperfect state of its wings. 



