192 
EMERALD CUCKOO. 
in that is very pale ; the under tail-covers in this are 
yellow and unspotted, while in that they are white 
with two green hands on each feather; reddish - 
copper is the predominant hue of the South African 
species, a tint which in this is hardly perceived. 
The general cast of the plumage has already been 
described ; the green terminates abruptly at the end 
of the breast, all the remaining under plumage being 
uniform yellow ; the under wing-covers are rather 
paler, and a basal stripe on the inner web of the 
quills is almost white; but on all these parts there 
are no spots or stripes whatever. The last is gra- 
duated; the outermost feather is white, with three 
interrupted bands of green; the next has a central 
white spot and a white tip, but that which follows 
is only tipt with white ; the outer half of the bill 
seems to have been yellow. 
Total length 9^ inches ; bill, gape, l 9 oi front, T «j; 
wings, 4 t \ ; tail beyond, 2 T 7 C ; base, 4l 4 (J» outer- 
most feather 1 T 6 0 - shorter than the middle ; tarsus, 
tV 
Assistant Commissary General Weir favoured me 
with the inspection of beautiful specimens of this, 
and of many other interesting birds, collected by him 
during his official residence at the Gambia station. 
