394 
Birds of Celebes; Laniidae. 
* 142. PACHYCEPHALA SULFURIVENTER (Tweedd.). 
Northern Grey-breasted Thick-head. 
Plate XVIII. 
a Hyloterpe sulfuriventra (1) Wald., Ann. & Mag. N. H. 1872, (4) IX, 399; fSJ id., Tr. 
Z. S. 1872, Vni, 117; ^5; Meyer, J. f. O. 1873,405; ^4; W. Bias., J. f. O. 1883,137. 
b. Hyloterpe sulphuriventris flj AVald., Tr. Z. S. 1875, IX, 179; II Gould’s B. Asia 11, 
in text to pi. 12. 
c. Pachycephala sulfureiventris fIJ Briigg., Abh. Ver. Bremen 1876, V, 69. 
Pachycephala sulfuriventer flJ Gadow, Oat. B. VIII, 1883, 221; fSJ Biittik., Notes Leyd. 
Mus. 1893, 168 (sulfureivmter)-, (3) M. & Wg., Abh. Mus. Dresd. 1895, Nr. 8, p. 10; 
(4) iid., ib. 1896, Nr. 1, p. 5. 
d. Hyloterpe sulphuriventer (1) Sharpe, Ibis 1887, 451; (2) Everett, J. Str. Br. it. A. S. 
1889, 122. 
“Kios”, Minahassa, Nat. Coll. 
Adult. Head above and neck greyish olive-brown; the upper surface olive washed with 
yellowish, yellower on the upper tail-coverts, tail dusky washed with yellow-olive, ex- 
posed parts of wing-coverts and outer edges of quills paler, the tips of the 
greater wing-coverts palest, almost forming a bar; lores, orbital region, and ear- 
coverts paler brown than the head above; chin, throat and jugulum greyish white 
becoming olivaceous grey on sides of chest and upper breast; remaining under- 
parts sulphur-yellow, very intense on the under tail-coverts; under wing-coverts 
and inner edges of quills below where they rest upon the body buffy white; 
rest of quills below dusky drab; tail below dusky drab, washed with yellow 
(cf. Crater-forest of Mt. Klabat, 5700 feet ca., 26. Sept. 1893: Sarasin Coll.). “Iris 
dark brown, bill black, feet slate-colour” (Sarasins). 
Female. Not known to differ from the male. Less grey on the head? 
Young. Younger birds seem to have less of a grey tinge on the head. 
Eemarks. The above-described male agrees with seven other specimens in the Sarasin 
Coll, and Dresden Museum from the hill-country of the Minahassa, but the olive tint 
of the head is duskier and greyer. These differences are probably due to age in part, 
but very likely in part also to locality. 
A specimen in the Sarasin Collection from the Lake of Matanna, discovered 
by the travellers in South-east Central Celebes, does not seem to differ from birds 
from the North Peninsula. Wing 84 mm. 
Measurements. 
AVing 
Tail 
Tarsus 
BiU from 
nostril 
a. (Sarasin Coll.) (j', Mt. Klabat, 26. IX. 93. . . . 
84 
63 
20 
9 
b. (C 10813) ad., Tondano, Aug. — Sept 
79 
61 
— 
8.5 
c. (C 10815) ad., Tondano, Aug.— Sept. 
82 
58 
20 
— 
d. (C 10814) ad., Tondano, Aug.— Sept 
78 
62 
— 
8.5 
e. (Sarasin Coll.) c? Tomohon, 8. X. 94 . . . . 
82 
61 
20 
9 
f. (Sarasin Coll.) o’ — Tomohon, 2. IV. 95 . . . . 
83 
61 
— 
— 
g. (Sarasin Coll.) — Tomohon, 7. IV. 94 . . . . 
81 
62 
20 
8.5 
h. (Sarasin Coll.) O' — Hurukan, 4. X. 94 . . . . 
85 
— 
— 
— 
Distribution. North Celebes (Meyer a 1, a 3), near Tondano 
(Sarasins), Tomohon and Rurukan (iid.). Lake Matanna 
(Nat. 
(iid.). 
Coll. 
), Mt. Klabat 
