418 
Mr. J. H. Gurney's Notes on 
tioned belonged to the Homrai, or Great Hornbill, with the flat 
casque, curved upwards anteriorly, that bird should stand as 
the B. bicornis, Linn., of which name B. cavatus , Shaw, is a 
synonym. The descriptions given by Brisson and Linnseus 
of the plumage of the body , not answering to any known 
species, cannot receive any consideration in connexion with 
B. bicornis. That of Linnseus applies best to Buceros (An- 
thracoceros) malabaricus of Gmelin; but the description of 
the casque shows that this species was not intended. 
XXXVII.— Notes on a ‘Catalogue of the Accipitrps in the 
British Museum / by B. Bowdler Sharpe (1874). By J. H. 
Gurney. 
[Continued from p. 333.] 
In my last paper I alluded (< antea, , p. 332) to the occurrence 
of Aquila clanga in Spain. Since then the Norwich Museum 
has been enriched by the gift, from Lieut.-Col. L. H. Irby, 
of an adult male of that species, killed near Seville on the 
11th February last, which I take this opportunity of re¬ 
cording*. 
The typical Eagles (those of the genera Uroaetus and 
Aquila ) to which I am disposed to limit the term “ Aquilinse," 
pass by an almost imperceptible gradation into the next group, 
the Hawk-Eagles, for which the designation of “Thrasaetinse/' 
suggested by the late Mr. Blythf, may, I think, be con¬ 
veniently adopted. 
The Hawk-Eagles are all, more or less, distinguished from 
the typical Aquilinse, as above restricted, by one or more of 
the following peculiarities, all of which seem to me to be in¬ 
dicative of Asturine affinities, viz. wings proportionally 
shorter, tail relatively longer, very large and generally much 
* Col. Irby informs me that another Seville specimen of A. clanga , a 
nearly adult bird, is in the collection of Lord Lilford. 
t Vide ‘ Catalogue of the Birds in the Museum of the Asiatic Society/ 
p. 24. 
