NORTHERN EANTAIL. 
Distribution. North Queensland (never at Cape York?) as far south as Rockingham. 
Bay ; Northern Territory and North-west Australia as far south as Point 
Torment. 
Adult male. General colour of the upper-parts dark ash-grey including the head, hack, 
and upper wing-coverts, somewhat browner on the last, the median and greater 
series of which are greyish-white, as are also the outer edges of the secondary- 
quills ; bastard-wing, primary-coverts, and flight-quills hair-brown, paler on the 
inner edges of the last ; long upper tail-coverts and tail-feathers blackish-brown 
with obsolete bars on the latter, the outer web and greater portion of the apical 
part white on the outermost feather on each side, on the next pair the white is 
confined to the tip ; cheeks blackish ; rictal bristles black and directed forward ; 
a slight trace of a white supraloral streak which is extended to above the eye ; 
chin, throat and fore-neck white ; breast ash-grey with white shaft-lines to the 
feathers ; abdomen, sides of body, under tail-coverts, axillaries, and under 
wing-coverts cream-white ; long under tail-coverts and tips of two outer tail- 
feathers white like the outer web of the outermost feather on each side, remainder 
tail below dark brown ; under-surface of flight- quills hair-brown with whitish 
inner edges. Bill and legs black ; eyes brown. Total length 163 mm. ; culmen 
11, wing 79, tail 82, tarsus 16. Figured. Collected on the Leichhardt River, 
Queensland, on the 19th of June, 1910, and is the type of S. s. macgillivrayi. 
Adult female. From the same locality, similar to the above. 
Adult female. Crown of head, hind-neck, sides of neck, back, and scapulars, dark ash- 
grey ; upper wing-coverts, bastard-wing, primary-co verts, and flight-quills hair- 
brown with greyish-white tips to the median and greater series like the outer edges 
of the secondaries ; tail blackish-brown, the outermost feather on each side has 
the outer web and tip white, the next pair has the white confined to the tip, and 
the next feather, on one side only, has just a trace of white at the tip ; fore-head 
and sides of face somewhat darker than the back ; a white spot in front and above 
the eye ; rictal bristles black, well developed, and directed forward ; throat white ; 
fore-neck and upper-breast ash-grey with white shaft-lines to the feathers, lower- 
breast, abdomen, and sides of body cream-white like the axillaries and under 
wing-coverts ; under-surface of flight-quills hair-brown ; under tail-coverts white ; 
lower aspect of tail dark brown ; the two outer feathers tipped with white, which 
extends along the outer web of the outermost feather. Total length 158 mm. ; 
culmen 13, wing 80, tail 80, tarsus 16. Figured. Collected at Derby, Noith-west 
Australia, on the 8th of September, 1886. 
Adult male. From the same locality similar. 
Immature male. Crown of head and sides of face dusky-brown ; back, scapulars, and 
upper wing-coverts dusky greyish-brown, the tips of the scapulars, upper tail- 
coverts and feathers of the lower back rust colour ; bastard-wing, greater upper 
wing-coverts, primary-coverts and flight-quills dark hair-brown with buffy- 
white tips to the median and greater wing-coverts, primary-coverts, and outer 
edges and tips of primary-quills ; tail blackish-brown, the outer feather on 
each side for the most part white, the dark pattern being restricted to the 
basal portion of the inner web, the next pair rather broadly tipped with white 
but chiefly on the inner web, the following pair have only a very small white 
wedge-shaped mark at the tips ; rictal bristles black but not strongly developed ; 
chin and throat white ; breast grey with slight indications of whitish shaft-lines 
to the feathers ; lower-breast and upper-abdomen cream-buff ; lower-abdomen 
and under tail-coverts white ; thighs dusky ; axillaries grey ; under wing-coverts 
cream colour ; under-surface of flight-quills pale hair-brown slightly paler on the 
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