BIAS MUSICUS. 307 
length, 5’; bill, 5”’; from gape, 7’’’ ; breadth of bill, 2}’’’ ; wing, 
3”; centre tail feathers, 1” 9’; the outer ones, 2”; tarsus 7’”. 
323. ERYTHROCERCUS LIVINGSTONII. Livingstone’s Flycatcher. 
This pretty little species was discovered during the Livingstone 
Expedition in the Zambesi district. The following is a description 
of the unique type in the British Museum. 
Adult.—Crown of head ashy grey: general colour above olive 
yellow: the rump and upper tail-coverts bright tawny rufous: the 
tail chestnut with yellowish margins near the base of the feathers: 
wing-coverts light brown with yellowish margins: quills dark 
brown, also margined with yellow: lores, cheeks, and chin white: 
ear-coverts light ashy: rest of under surface of body bright yellow, 
slightly washed with fulvous on the under tail-coverts: under wing- 
coverts bright yellow, the greater series white. Total length, 
3°7 inches; culmen, 0°3 ; wing, 1°75; tail, 1°95; tarsus, 0°6. 
324. Bras musicus. The Black-and-White Flycatcher. 
The late Dr. Dickerson obtained this species in the Zambesi, and 
Dr. Livingstone brought back a pair from Tete. The male differs 
from West African specimens in not having the black extending so 
far on to the breast, while the female is whiter below, but it would 
not do to separate the Zambesi specimens specifically on the strength 
of a single pair of birds. 
Adult male-—General colour above glossy rifle-green, the head 
with a long crest, scapulars and the rump slightly mottled with 
white subterminal spots to the feathers: lesser and median wing- 
coyerts rifle-green, like the back; the greater series and the 
secondaries black margined externally with rifle-green, the primaries 
black with white bases extending in a band across both webs of all 
but the two outermost quills, on which this colour is confined to the 
inner web only: tail black, slightly glossed with rifle-green on the 
edges of the feathers: sides of face and of neck, throat, and breast 
glossy rifle-green: rest of under surface white, the flanks mottled 
with black, with which all the feathers are broadly margined: thighs 
black : under wing-coverts rifle-green like the breast: ‘ bill black : 
feet, yellowish grey” (Reichenow). Total length, 6°2 inches: 
culmen, 0°85; wing, 3°35; tail, 2°05; tarsus, 0°5. 
Adult female.—General colour above chestnut, the tail entirely 
Z 
. 
