424 
Mr. J. H. Gurney’s Notes on 
in that genus to stand under the generic name of Limnaetus, 
of which L. caligatus is the type, and under which I would 
also include L. kieneri and L. isidori, which Mr. Sharpe has 
separated under the generic name of Lophotriorchis, hut, as 
I venture to think, on somewhat insufficient grounds. 
I propose to refer first to the genus Limnaetus , and subse¬ 
quently to Spizaetus. 
In the f Proceedings 9 of the Zoological Society for 1860, 
p. 342, my late friend, Mr. G. B. Gray, described and figured, 
under the name of Aquila gurneyi , a very fine Eagle, which 
was first obtained by Mr. Wallace in Batchian, but which also 
occurs in several other islands of the eastern ocean, as enu¬ 
merated in Mr. Sharpens volume. Mr. Sharpe includes this 
species in the genus Spizaetus; I am, myself, disposed to 
agree in this view so far as to consider it a somewhat ab¬ 
normal species of that portion of Mr. Sharpens genus Spi¬ 
zaetus y for which I would use the more restricted title of Lim¬ 
naetus. I think, however, that there is a considerable degree 
of truth in the remark made by Mr. Gray in his original 
description of this species, that this fine bird partakes of 
the form of Aquila malayensis and it is for this reason that 
I allude to it as next in order to that species, which it recalls 
by its very large (though more curved) inner claw, by its 
somewhat elongated bill and wings, and by its largely de¬ 
veloped and narrowly barred tail ; the iris, however, is of a 
different character, being stated by Mr. Wallace to be "yel¬ 
low-olive 9 '*, 
Limnaetus gurneyi appears to be always destitute of a 
crest, in which respect it resembles another and much more 
typical species, Limnaetus lanceolatus , of Celebes, respecting 
which I have nothing to add to the notice contained in Mr. 
Sharpe’s volume, except to mention that it also inhabits the 
Sula Islands *j* j and I will therefore proceed now to consider its 
nearly allied but more widely distributed congener, Limnaetus 
* Vide Ibis, 1868, p. 13. 
t Vide Schlegel’s ‘ Valk-Vogels,’ pi. 7. fig. 3 ; also the Marquis of Tweed- 
dale’s paper on the Birds of Celebes, in the 1 Transactions ’ of the Zoo- 
ogical Society, vol. viii. p. 34. 
