332 LANIARIUS LEUCORHYNCHUS 
Afr. Exped. iii. p. 312 (1910); id. Mittl. Zool. Mus. Berlin v. p. 82 
ito Benito. 
Dryoscopus leucorhynchus, Gadow, Cat. B. M. viii. p. 132 (1883). 
Laniarius carbonarius, Cass. Proc. Philad. Acad. 1851, p. 347 (1852) 
Sierra Leone. 
Adult male. Entire plumage sooty black with only a very slight gloss ; 
no subterminal white spots on the rump. Iris reddish brown, bill and feet 
black. Total length 9:5 inches, culmen 1:0, wing 3°9, tail 3°7, tarsus 1:17. 
River Ja, 3, 4. 4. 06 (Bates). 
Female. Slightly less glossy black with a tinge of brown. Bill black, 
wing 36. Efulen, ? (Bates). 
Immature. Still more brownish, and the bill at first quite ivory white, 
changing gradually to black. 
The Sooty Boubou ranges from Sierra Leone to Gaboon 
on the west coast and extends inland through the Belgian 
Congo as far as the Semliki Valley and Ruwenzori. 
The type was obtained at Elmina on the Gold Coast by 
Weiss and being a young bird with a white beak was given 
by Hartlaub the name “ lewcorhynchus.” An examination of 
the series in the British Museum, especially those obtained 
from Camaroon by Bates, shows plainly that it is the young 
and not the old birds, as was believed by Reichenow, which 
have the beak so coloured. 
From Sierra Leone McDowell sent an example of this 
bird to Cassin; he described it afresh as L. carbonarius, 
as it had a black bill. From this colony it has also been 
obtained by Robin Kemp. Buttikofer met with this species 
at several localities in Liberia, and Governor Ussher and 
Blissett in the Gold Coast Colony. In Camaroon it has 
been collected by Reichenow himself in the low country and 
by Preuss, Crossley, and Knutson and Valdau on the Peak 
of Camaroon, while there is a good series of various ages 
and sexes sent to the British Museum by Bates from Efulen 
and the Ja River. 
Further south from Gaboon in French Congo, du Chaillu 
