Birds of Celebes: Falconidae. 
37 
Leyden Museum we have seen just such another immature bird from the 
Philippines as that described above from Celebes. 
The specimen in the Norwich Museum stated to have come from Batchian 
bears no collector’s name on the label. It was purchased of Bonvier of Paris, 
and most probably the locality indicated is quite correct, but, until more evi- 
dence is forthcoming, it must be looked ujDon as of uncertain origin (see Sal- 
vadori d 3). 
The genus Lophotrmxhis, founded by Dr. Sharpe for this species and Sp. 
isidori of South America and to which L. lucani Sharpe & Bonvier of S. W. 
Africa has since been added ^), occupies a position about midway between Nisaetus 
and Spizaetus, resembling the former by its long wings, feet and tarsi, and the 
latter by its bill and immature plumage. The specimen in the Dresden Mu- 
seum agrees in many respects of coloration with Spizaetus alhoniger Blyth, juv., 
from Malacca and Borneo, but the following scheme shows how widely they 
differ structurally; 
. . wing 14.25 
L. kieneri mv. ^ 
tarsus 2.80 
S. alhoniger juv. ^ 
tarsus 2.625 
mid. toe 2.10 
tarsus 2.80 
mid. toe 1.375 
tarsus 2.625 
It will be found that, in proportion to the tarsus, the wing of Lophotriorchis 
kieneri is 2 V 2 inches longer than that of Spizaetus alhoniger^ and the middle toe 
0.64 inches longer. 
L. kieneri is a rare species, and little is known of its habits. Colonel 
Legge points out that it is a hill-haunting bird. Its food consists of birds and 
small mammals; Mr. Wallace’s Sarawak example was killed while devouring 
a pigeon — a fact which points to its fine flying powers, which have been 
remarked upon by Legge and others. 
From its rarity Mr. Whitehead (5) believes this to be a migratory species 
in Borneo, visiting the country during the N. E. monsoon, towards the end of 
which (March 20^\ 1887) his specimen from Kini Balu was obtained. Mr. Hume’s 
example from Singapore and Count Salvadori’s from Sumatra were likewise 
shot during the N. E. monsoon, viz: Jan. 19*^ 1880, and Feb. 3"'^ 1891, re- 
spectively. Dr. St e ere found it in Mindanao, Panay and Marinduque in Oct. — 
Dec,, January and May, the last being a very late date for a migratory species; 
but until more evidence is forthcoming of course no conclusion as to migration 
can be drawn. 
GENUS ICTINAETUS Jerd. 
This Eagle is well characterized by its foot: the inner toe, including 
the claw, is much longer than the middle one; the claws very little curved, 
that of the hallux and of the inner toe very long, exceeding the length of the 
1) Gurney considered this species to be Nisaetus spilogaster juv. (Diurn. B. Prej^, 52, note). 
