Mr. R. B. Sharpe’s Catalogue of Accipitres. 419 
curved inner and hinder claws, culmen comparatively shorter 
and more rounded, also, in many species, an occipital crest, 
and, in many, yellow irides. 
In the large majority of Hawk-Eagles the tarsi are fea¬ 
thered ; but in a few instances, to which I shall have occasion 
subsequently to refer, they are bare of feathers and are 
scutellated. 
Those of the Hawk-Eagles which differ least from the 
typical Aquilinse are comprised in the genus Nisaetus ; but 
this genus is composed of three very distinguishable minor 
sections, of which I should arrange as the first the Dwarf 
Eagles N. pennatus and N. morphnoides —two species which 
form the subgenus Hieraetus of Kaup, and which, perhaps, 
might properly be kept distinct under that designation; 
secondly, N. fasciatus (the type of the genus Nisaetus) and 
N. spilogaster ; and, thirdly, N. hellicosus, which is placed by 
Mr. Sharpe amongst the Spizaeti, but which (following the 
examples of Blyth* and Jerdonf) I refer to the genus Ni¬ 
saetus , considering it decidedly too long in the wing to be 
appropriately arranged among the more short-winged of the 
Hawk-Eagles, in which company it appears in Mr. Sharpens 
volume. 
Subsequently to the publication of Mr. Sharpe's work, 
very full accounts of Nisaetus pennatus have appeared in Mr. 
Dresser's f Birds of Europe,' and also in M. Bureau's inter¬ 
esting brochure, which has already been noticed in f The 
Ibis' (< anted , p. 245); and I have nothing to add to the 
information there supplied, except to record that the Norwich 
Museum possesses a specimen from Moulmein, which is a 
more eastern locality than any recorded either by Mr. Sharpe 
or by Mr. Dresser. 
To Mr. Sharpe ornithologists are indebted for pointing out 
an excellent criterion for distinguishing this Eagle from its 
nearly allied Australian congener, N. morphnoides, in the fact 
that in the latter, and not in the former, the under surface 
* Vide ‘Journal of the Asiatic Society,’ vol. xiv. p. 174. 
t Vide 1 Birds of India,’ vol. i. p. 67 (note). 
2 g 2 
