864 BIRDS OF SOUTH AFRICA. 
438. HiruNDO ANGOLENSIS. Angola Swallow. 
This Swallow is smaller than H. rustica, which it resembles in its 
rufous forehead and throat, and is further distinguished by its ash- 
coloured under surface and under tail-coverts. It was discovered 
by Senor Anchieta in Angola, and has also been found by him at 
Hnilla in Mossamedes. 
Adult.—Forehead, throat and upper part of the breast deep brick- 
red ; the entire upper surface rich steel-blue, haying a greenish lustre 
in some lights: tail gradually forked, the two middle feathers steel- 
blue, the whole of the inner web white, except a black border at the 
tip: a narrow interrupted band across the breast below the red 
throat, steel-blue; rest of the breast and under tail-coverts ash- 
coloured, a little paler in the centre of the breast, the under tail- 
coverts washed with rufous, each feather margined with pale grey, 
and having a little heart-shaped blue mark before the end of the 
feather, the black shaft being also strongly defined; under wing- 
coverts dark ashy grey, washed on the edge of the wing with steel- 
blue ; bill and legs black. otal length, 5:7 inches ; culmen, 0°35 ; 
wing, 4°7; tail, 2°5; tarsus, 07d. 
Fig. Sharpe, P. Z. 8. 1869, pl. xcii. 
349. Hirunpo ALBIGULARIS. White-throated Swallow. 
Hirundo albigula and H. rufifrons, Layard, B. 8. Afr. pp. 
53, 55. 
Although belonging to the red-fronted Swallows, this species is 
distinguished by its white throat from the two foregoing birds. It 
is probably this Swallow that Le Vaillant intended to figure in his 
plate of the “ Hirondelle & front roux,’ which is, however, appa- 
rently drawn from memory, and cannot be recognized. 
If any of our Cape swallows could be mistaken for the European 
species, this would in all probability be the deceiver. In fact, for a 
long time we were deceived by it, until one bright sunny morning, 
while watching the flight of some of these lovely aerial creatures, it 
struck us that the blue of the back and white of the breast looked 
brighter than in the old-country bird. For some time they confined 
their course to the narrow river, on the bridge over which we stood, 
but at last one strayed for an instant over the bank; a well-directed 
shot laid him on the green sward, and we instantly recognized the 
