236 CORVINELLA 
Stuhlmann obtained the species at Ngoma to the west of the 
Victoria Nyanza. Fischer collected specimens in Great 
Arusha, where he found insects spitted on thorns by these 
Shrikes after the manner of our better known Butcher-birds. 
He procured the type of U. equatorialis, a female, in the Gaza 
Mountains and other specimens at Soboro, Kagehi and Nassa 
during his last journey to the shores of the Victoria Nyanza. 
There are examples of this species in the British Museum 
from the Maritzani river near Mafeking (Layard), Lake 
Ngami (Chapman), Rustenburg (Ayres), Crocodile River and 
Tati (Oates), Swaziland (Buckley), Umfolosi station in Zulu- 
land and Klein Letaba in the Transvaal (Grant), Makalaka 
country and Zambesi (Bradshaw), and Enkeldoorn, Rhodesia 
(Clark), Ondonga and Ovaquenyama in northern Damara- 
land (Andersson), Huilla in Benguella (Anchieta), north of 
Lake Nyasa (Sharpe) and Uniamwesi in German East Africa 
(Emin). 
Genus 1. CORVINELLA. 
Bill still shorter and more curved than in Urolestes, surrounded by strong 
bristles ; wing somewhat rounded as in Urolestes ; tail longer than the wing 
but not twice the length, the feathers narrow and very strongly graduated, 
the graduation being more than half the length of the wing. General 
plumage brown, more or less streaked or barred with black; under parts 
whiter with some rufous on the flanks, at least in the females; tail mottled 
with rufous. 
Type. 
Corvinella, Less. Traité, p. 372 (1831) . . . . . . . . GC. corvina. 
The genus is confined to Tropical Africa and comprises two species. 
The genus leads into Fiscus through C. sowz@, in which the rufous of the 
flanks is confined to the females. 
KEY TO THE SPECIES. 
a. Bill yellow ; no pure white on the scapulars . . . . . . corvind 
b. Bill black ; scapulars mostly pure white. . . . . . . . sowg@. 
