14 
Birds of Celebes: Falconidae. 
with overhanging feathers, behind with a double row of rather small, and for the 
most part multiangular, scales^ toes middle-sized 5 claws relatively weak. 
Entire upper surface uniform dark brown, passing into dark grey on the 
front and sides of the headj bases of the feathers whitej lesser wing-coverts, 
tertiaries and points of the secondaries and rectrices furnished with rust- 
red edges; tail uniform dark brown, in certain lights with faint traces of narrow 
cross-bars [separated by intervals of about 10 mm]; inner webs of the quills and 
tail-feathers with moderately broad indistinct cross-bars of darker brown, more 
apparent near the rust-red margins and on the under side; under wing-coverts 
reddish white; outer quills below ashy grey, inner ones pale rust-reddish; tail- 
feathers below whitish grey, reddish at the edge of the inner web; body below 
white, with a rusty yelloAvish wash on the abdomen and thighs; feathers of the 
breast with dark brown shafts and with a rhombic, sharp-pointed, brown spot before 
the end; towards the belly these spots are arrow-shaped, and pass into rather broad 
and somewhat washy cross-bars on the sides of the body and thighs; lower 
abdomen, anal region, under tail-coverts and feathering of the tarsi unspotted. 
Wing 182 mm (when adult perhaps ca. 200), tail 115; culmen from forehead 23; 
height of bill at base 14.5, at front edge of cere 12; tarsus 53; middle toe 
28 (Briiggemann). 
Through the kindness of Professor von Koch we have been able to examine 
Briiggemann’s type, a young specimen most nearly resembling, among other 
Celebean species, the young of Astur trivirgatus and griseiceps. From these 
species it differs by its more slender tarsus and toes, especially in this respect 
from A. griseiceps, and the character of the barring on the wings below and tail 
is quite different from both. 
Professor W. Blasius (a 1) thinks it possible that this specimen is a young 
one of A. kiogaster or the young of a new species of Celebes, the adult of which 
has not yet been found. Jacquinot and Pucheran have already indicated 
Macassar as a haunt of A. hiogaster, but neither Walden , nor Salvador!, nor 
Blasius believe in the correctness of the locality noted for the specimen in 
question. It is not possible to form a positive opinion about it. If A. tenui- 
rostris is the same as TJrospizias hiogaster the folio Aving is the synonymy: 
Urospizias hiogaster (S. Mil 11.) 
a. Falco hiogaster S. Mull., Verb. Nat. Geschied. 1839 — 44, 110. 
&. Epervier oceanien (I) Homhr. & Jacq., Voy. Pole Sud, Atl. pi. 2, f. 1. 
c. Aceipiter hiogaster Gray, Gen. B. 1845, I, 29. 
d. Nisus iogaster (1) Schl. , Mus. P.-B. Astures 1862, 43; (II) id., Yalkv. 1866, 27, 65, pi. 18, 
f. 1, 2, 3; (3) id., Eev. Acc. 1873, 89. 
e. Erythrospiza iogaster (1) Kaup, P. Z. S. 1867, 173. 
f. Erythrospiza iogastra (1) Wald., Tr. Z. S. 1872, YIII, 34. 
g. Astur hiogaster (1) Sharpe, Oat. B. 1874, I, 104; (2) id., Mitth. Mus. Dresd. 1878, 
353, 355. 
