334 LANIARIUS HOLOMELAS 
Laniarius holomelas. 
Dryoscopus holomelas, Jackson, Bull. B.O.C. xvi. p. 90 (1906) Ruwen- 
zori; id. Ibis, 1906, p. 551; Ogilvie-Grant, Trans. Zool. Soc. xix. 
p. 343 (1910) Ruwenzori. 
Laniarius holomelas, Reichenow, D. Zentr. Afr. Exped. iii. p. 312 (1910). 
Laniarius melas, Reichen. Orn. Monatsb. 1908, p. 47 Rugege Forest, 
Lake Kwu. 
Adult. Closely resembling ZL. leucorhynchus, but smaller throughout, 
and with a shorter bill; the black of the plumage has a distinct ashy shade, 
as compared with the purplish shade of the larger bird. Iris brown; bill 
and feet black. Total length 7:2 inches, wing 3:2, tail 2°75, culmen 0:9, 
tarsus 1:2. Ruwenzori, type, 3, 21. 2. 02 (Archer). 
Jackson’s Sooty Boubou is confined to the region round 
the Ruwenzori Mountains and Lake Kivu. It was discovered 
by Geoffrey Archer, who made a journey to Ruwenzori in 
1902 in order to collect birds for F. J. Jackson. He obtained 
three exaniples, two of which are now in the British Museum. 
It was subsequently met with by the members of the Ruwen- 
zori Expedition in the Mubuku and Butagu valleys on the 
east and west sides of the mountain. R. B. Woosnam, one 
of the members of the expedition, writes as follows: “This 
Black Bush Shrike was found on Ruwenzori at elevations of 
from 6,000 to 9,000 ft. It is really a bird of the forest-zone, 
but it is occasionally met with lower down as well as in the 
bamboo-zone above. It has the most marvellously versatile 
range of notes it is possible to imagine. From the depth of 
some tangled mass of creepers one might hear, first a low 
harsh ‘scraping or chattering sound, followed by some of the 
most beautiful flute-like notes. After a moment or two of 
silence an extraordinary clicking sound would commence 
(such a sound as made by bending and letting fly the tip of 
a strong quill toothpick), followed by a succession of quick, 
high-pitched piping notes. A search for the performer usually 
resulted in finding nothing, so cunning were these birds in 
