GREY-BREASTED SHRIKE ROBIN. 
Distribution. South-west Australia and South Australia, from the Wongan Hills, 
S.W.A., to Eyre’s Peninsula, S.A. 
Adult male. Crown of head, sides of face, hind-neck, upper back, upper wing-coverts, 
sides of neck, and a band across the breast dark slate-grey but much paler on the 
breast ; the central portion of the median and greater upper wing-coverts black 
like the bastard-wing and primary-coverts ; outer edge of wing white dotted with 
brown ; flight-quills blackish edged with grey on the outer webs and margined, 
or otherwise marked with white on the basal portion of the inner webs ; lower 
back, rump, and upper tail-coverts citron-yellow ; tail-feathers blackish edged 
with white at the tips and fringed with green on the basal portion ; the feathers on 
the side of the head are paler than those in the middle of the crown ; rictal bristles 
black and fairly well developed ; feathers in front of the eye blackish ; chin, 
cheeks, and throat, dull white ; abdomen and flanks yellow ; under tail-coverts 
sulphur-yellow ; thighs dark grey ; axillaries grey ; under wing-coverts white 
more or less intermixed with dusky -brown ; under-surface of flight- quills dark 
brown fringed with white on the basal portion ; lower aspect of tail dark brown 
with white edgings at the tips of the feathers. Bill and feet black ; eyes dark. 
Total length 150 mm. ; culmen 12, wing 97, tail 71, tarsus 23. Figured. Collected 
at Eyre’s Peninsula, South Australia, on the 26th of August, 1911, and is Pachy - 
cephala australis rosince Mathews. 
Adult female. Similar to the above. 
Immature male. Crown of head, nape, upper back, scapulars and upper wing-coverts 
lead-grey, a large number of the feathers on these parts white with smoke-brown 
margins to the feathers ; outer edge of wing white slightly intermixed with brown ; 
tips of greater upper wing-coverts slightly marked with white ; bastard-wing and 
primary-coverts blackish-brown with grey or white edgings to the feathers ; flight- 
quills dark brown edged with grey on the outer webs and more broadly with white 
on the inner ones occupying the whole of the web at the base ; lower back and 
upper tail-coverts greenish-yellow ; tail-feathers dusky-brown, the middle ones 
fringed with green on the outer webs, inner webs narrowly edged with white which 
is much extended at the tips of the outer feathers ; lores and rictal bristles black ; 
sides of face smoke-brown with whitish shaft-streaks to many of the feathers ; 
chin and throat pale smoke-brown with white bases to the feathers ; sides of neck, 
sides of breast, and sides of body pale lead-grey ; middle of breast, abdomen, lower 
flanks and under tail-coverts yellow with silky-white bases to the feathers, some 
of the long under tail-coverts inclining to very pale grey ; axillaries and under 
wing-coverts lead-grey more or less intermixed with white ; under-surface of flight- 
quills greyish-brown with white inner edges on the basal portion ; lower aspect of 
tail similar but rather paler and the edges more extended at the tips of the feathers. 
Collected at Broome Hill, West Australia, on the 28th of October, 1906. 
Immature. Crown of head, sides of face and nape smoke-brown with white shaft-streaks 
to the feathers ; back, and scapulars slate-grey with smoke-brown feathers with 
white shaft-lines intermixed ; rump greenish-yellow becoming rust colour on the 
long upper tail-coverts ; upper wing-coverts dark slate-grey ; bastard-wing, 
primary-coverts, and flight-quills dark brown with grey edges on the outer webs of 
the quills and white on the inner margins, some of the innermost secondaries 
slightly indented with whitish at the tips ; tail blackish-brown with green fringes 
to the outer webs and white on the inner ones which become broader at the tips 
of the outer feathers ; rictal bristles black ; chin, throat, and breast pale smoke- 
brown with white shaft-lines to the feathers and more or less white inter- 
mixed, some of the feathers on the chin have hair-like tips ; abdomen, sides of body, 
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