WHITE-THROATED THICKHEAD. 
the wings, upper tail-coverts and tail, inner webs of bastard-wing, greater upper 
wing-coverts, primary -coverts, and flight-quills paler on the inner edges of the last, 
the tips of the greater upper wing-coverts and outer margins of flight-quills hoary- 
grey ; tail uniform, or only very slightly paler on the edges at the tip and along the 
inner webs ; rictal bristles black as are also the hair-like tips to the feathers on the 
chin ; lores grey ; chin and throat grey with whitish bars and edgings to the feathers ; 
breast dusky -grey with dark shaf t-lines to the feathers and slightly tinged with buff ; 
sides of body grey ; thighs dusky ; abdomen and under tail-coverts buff, paler and 
inclining to silky -white on the vent ; axillaries and under wing-coverts isabelline- 
buff ; under-surface of flight-quills hair-brown with buffy -white on the inner edges ; 
lower aspect of tail greyish -brown. Eyes reddish ; bill black ; feet and legs purple- 
flesh. Collected at Broome Hill, South-west Australia, on the 3rd of September, 1908. 
Adult male (in moult). Crown of head and nape dusky-brown with grey edges and dark 
centres to some of the feathers ; back, scapulars, and upper wing-coverts yellowish- 
green, rather paler on the tips of the median coverts where there is a slight indication 
of a wing bar, tips of the greater series inclining to whitish which forms a second 
wing bar ; central portion of the last as well as those of the bastard-wing, primary- 
coverts and flight-quills blackish-brown, paler on the outer margins becoming hoary- 
grey on the primaries and whitish on the inner margins of the quills ; tail pale greyish- 
brown with more or less black on the apical portion of some of the central feathers ; 
rictal bristles black like the tips to some of the feathers on the chin ; base of lores 
whitish, the tips blackish and hair-like ; ear-coverts dusky with whitish shaft-streaks ; 
throat and breast pale ash-grey becoming cream-white on the chin with a few black 
feathers appearing on the breast and sides of the face and a few yellow feathers on the 
sides of the breast ; middle of abdomen, lower flanks, and under tail-coverts isabelline- 
buff with more or less yellow intermixed and a few white tipped feathers on the vent, 
the bases to the feathers on the under-surface blackish-slate colour ; thighs grey ; 
axillaries and under wing-coverts isabefline-buff ; under-surface of flight-quills pale 
hair-brown with whitish inner edges ; lower aspect of tail grey with white shafts 
to the feathers. Eyes reddish-hazel, bill dark purple, feet and legs purple-flesh. 
Collected at Broome Hill, South-west Australia, on the 5th of December, 1910. 
Immature male. General colour of the upper-surface olive-grey including the head, back, 
wings and tail, intermixed with cinnamon-rufous on the top of the head, back, 
scapulars, upper tail-coverts and upper wing-coverts, the greater upper wing-coverts 
for the most part cinnamon-rufous, outer margins of secondary-quills fringed with 
the same colour but rather paler ; inner webs of flight-quills hair-brown with whitish 
inner edges ; tail uniform olive-grey ; lores, fore-part of cheeks, and middle of 
throat pale ash-grey becoming darker on the fore-neck ; hinder cheeks and sides 
of throat rufous ; middle of breast, middle of abdomen, and under tail-coverts 
inclining to white, more or less tinged with rufous ; sides of breast and sides of 
body ash-grey extensively intermixed with rufous ; thighs dusky-grey ; axillaries, 
inner under wing-coverts, and inner edges of quills below greyish-white, outer margin 
of wing below ash-grey ; under-surface of flight-quills pale hair-brown ; lower 
aspect of tail also pale hair-brown with white shafts to the feathers. Eyes brown, 
feet slate, bill horn. Collected at Selby, Victoria, on the 27th of December, 1913. 
Immature male (in change of plumage). Upper-surface ; fore-part of head, lesser and 
median upper wing-coverts, back, upper tail-coverts, and tail olive-brown ; hinder 
crown, nape, hinder face, a few feathers on the mantle, scapulars, lateral upper tail- 
coverts, outer webs of bastard-wing, greater upper wing-coverts, primary-coverts, 
inner primary and secondary- quills dark cinnamon-rufous, edges of outer primary- 
quills grey, inner edges of flight-quills greyish-white ; throat pale ochreous, tinged 
with cinnamon, and dark shaft-lines to the feathers ; a dark band of cinnamon across 
the upper-breast, lower-breast pale ochreous ; abdomen, sides of body, and under 
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