10 
Birds of Celebes: Falconidae. 
“Rurunbalu”, Tjamba, S. Celebes, Platen b 4. 
“Sikep burik sedang”, juv. Manado, Nat. Coll. 
Figures and descriptions. Wall. 71; Schl. IV, 1, 6"; Sharpe 7; Brliggem. S; W. Bias, b 6. 
Adult male. Head, neck, cheeks and ear- coverts blue-grey, shafts of the feathers 
dark; rest of upper surface, including primaries, warm (Pr out’s) hrown with a 
purple gloss in certain lights; upper tail-coverts washed with slaty; tail crossed with 
four bands of blackish, the basal one concealed and imperfect; chin and throat 
wliite, bounded on either side by a malar streak of slaty black and marked down 
the middle with a stripe of the same colour; underjjarts white, uniform on the 
lower abdomen and under tad-coverts, but marked on breast, sides and abdomen 
with broad longitudinal streaks of blacldsh brown, and closely barred on thighs and 
flanks with blacldsh; under wing-coverts white; quills below white, at 
distal ends brown, and imperfectly crossed with about four narrow bars of dusky 
[(f, Eurukan, N. Celebes; April 1894: P. & F. Sarasin). 
Adult female. Much like the male, but larger; the head brovner grey, upper surface paler 
brown; the white of the under surface more tinged with buff, and the longitudinal 
strii)es thereon wai-m dark brown (Prout’s); the dusky bars on the thighs and flanks 
broader; five bars (instead of four) generally distinguishable on the tail — the two 
basal ones more or less obliterated and concealed; under wing-coverts wliite, with 
a few hrown spots on them — sometimes also seen in the male (Q ad., Kema, 
N. Celebes, 30*” Aug. 1893: P. & F. Sarasin). 
“Iris gold-yellow; feet yellow; cere greenish yellow; hill grey-blue” ($ — 
Sarasin). 
Young. Above waxm dark broivn, with whitish terminal edges to the feathers, the middle 
and lateral parts of the feathers more buff-hrown; head above blacker brown, with 
wliitish tips; face and under surface white, sometimes almost mistriped with 
lirown, usually striped with dark hrown, chiefly along the mesial 2 )art of the feathers 
of the breast, and stained (as it appears) with a weak solution of the same brown 
chiefly on the face and breast; the tliighs with dark transverse spots and bars; 
5—6 dark bars on the tail, basally indistinct (f,! juv.. Lake Matanna, S. E. Central 
Celebes, 27. IT. 96: P. & F. Sarasin; and other examifles). 
"Iris yellow; cere greenish; legs green-yellow, on the shins dark” (P. & F. S.). 
Measurements. 
a. (Nr. 6701) ad. Minahassa, N. Cel. (v. Musschenbroek) 
h. (Nr. 6703) [cf] ad. Gorontalo, N. Cel. (Riedel) . . . 
c. (Sarasin Coll.) Q ad. Kema, N. Cel., 30. VIH. 93 . 
d. (Sarasin Coll.) Q ad. Tomohon, N. Cel., 2. VIH. 94 
e. (Sarasin Coll.) c? ad. Eimikan, N. Cel., IV. 94 
f. (Sarasin Coll.) cf ad. Lake Limbotto, N.Ceh, 18.in. 95 
q. (Sarasin Coll.) q* ad. LakeTownti, S.E.Ceh, 3.in.96 
'h. (Sarasin Coll.) "c?” [? Q] j. Mapane, C. Cel.,3. HI. 95 
i. (Sarasin Coll.) o’ j. Lake Matanna, C. Cel., 27. II. 96 
(c 10847) juv. Minahassa, VIH. -IX. 92 (Nat. Coll.) . . 
A-. (e 13451) juv. Minahassa, 15. YHI. 94 (Nat. Coll.) . . 
Wing 
Tail 
Tarsus 
Culmen 
from cere 
206 
180 
56 
_ 
183 
157 
49 
— 
200 
160 
54 
18 
204 
170 
— 
17.5 
176 
142 
46 
15 
181 
141 
— 
16.5 
182 
142 
— 
1 1.5 
200 
168 
— • 
17.5 
195 
161 
— 
17 
203 
164 
54 
18 
200 
165 
— 
16.5 
