ACANTHIZA PYRRHOPYGIA, Gould.
Red-rumped Acanthiza.
Acanthiza pyrrhopygia, Gould in Proc. of Zool. See., 1847.
T h i s species differs from the Acanthizce Diemenensis, pusilla, Ewingii, and apicalis, in having a shorter and
more robust bill, and in the greater depth o f the red colouring on the rump and upper tail-coverts; it also
differs from the three former in having the tail tipped with white, in which respect it assimilates to the
A . apicalis and A . uropygialis, to the former of which it is most nearly allied.
I discovered this species in the Belts o f the Murray, where it inhabits the small shrubby tre e s; upon
first seeing it, I at once perceived that it was a distinct species by the red colouring o f the rump, which
showed very conspicuously at the distance of several yards, and also by the peculiarity o f its note. In its
actions it very closely assimilates to the other members of the genus, being an alert and quick little bird,
carrying its tail above tbe level of the back, and showing the red colouring of the coverts to the greatest
advantage. I succeeded in killing both sexes, and found that they exhibit no outward difference, and are
only to be distinguished with certainty by dissection.
All the upper surface and wings olive-brown, the feathers o f the forehead margined with buff; wings
brown with pale edges; throat white, each feather margined with black; abdomen whitish ; flanks pale
buff; upper tail-coverts rufous ; tail olive, crossed by a broad band of black, and tipped on the outer webs
with pale olive, on the inner webs with white ; hill blackish brown, under mandible somewhat lighter; feet
brown ; irides reddish brown.
The figures are of the natural size.