Order CHARADRIIF0RME8 
No. 164. 
Family CHARADRIIDM. 
BRYTHROGONYS CINCTUS MIXTUS. 
WESTEEN EED-KNEED DOTTEREL. 
(Plate 128 .)* 
Erythrogonys CINCTUS MIXTUS Mathews, Nov. Zool., Vol. XVIII, p. 215, 1912 ; North- 
west Australia. 
Erythrogonys cinctus Hall, Emu, Vol. II., p. 64, 1902 ; Carter, ih., Vol. III., p. 175, 1904 ; 
Hartert, Nov. Zool., Vol. XII., p. 200, 1905 ; Ingram, Ibis 1907, p. 393 ; id., ih. 
1909, p. 614 ; Mathews, Emu, Vol. IX., p. 54, 1909 ; Grant, Ibis 1910, p. 183. 
Distribution. West Australia ; Northern Territory. 
Adult male. Head, sides of face, hind-neck, upper mantle, and a broad band across the 
breast black ; back and wings ohve-brown like the middle of the rump, upper 
tail-coverts, and middle tail-feathers ; a portion of the outer edge of the wing, 
white ; primary-coverts and primary-quills brown, the latter paler on the inner 
webs and becoming white at the base, the inner primaries white at the tips and 
fringed with white on the inner webs ; secondaries dark brown at base with broad 
white tips, the long innermost secondaries like the back ; outer tail-feathers white, 
the outermost pair edged with ohve-brown on the outer web near the tip ; throat 
and fore-neck white hke the lower sides of neck, abdomen, and axiUaries ; the 
long feathers on the sides of the body chestnut, edged and tipped with white ; some 
of the feathers adjoining the pectoral band black, edged with white on the outer 
web ; flanks, sides of rump, and under tail-coverts white, with dark centres to 
the feathers at the tip, more or less mixed with chestnut ; inner under wing-coverts 
white, the long ones with a brown spot at the tip, the marginal coverts blackish ; 
“ Bill, culmen, and distal third black, remainder red ; iris brown ; feet and tarsi 
blue ; knees and tibia red ” (J. P. Rogers). Total length 174 mm. ; cuhnen 22, 
wing 108, tail 46, tarsus 41. 
Adult female. Similar to the adult male, but has the crown of the head brown. 
Young. General colour of the upper-parts earth-brown, including the head, back, wings, 
and middle tail-feathers, with pale edges to the upper wing-coverts, the dark and 
hght patterns on the wing similar to the adult ; throat and general under-surface 
white, including the middle of the breast, with a shght indication of the black 
pectoral band on the sides of the latter, and the chestnut flank-feathers appearing. 
Another immature example, rather more advanced in age, has the upper 
wing-coverts uniform without any pale edges, the cheeks, ear-coverts, and a band 
on the hind-neck inclining to black, the pectoral band more pronounced on the sides 
of the breast and faintly indicated across the middle of the latter, the chestnut 
on the sides of the body well marked, under wing-coverts for the most part white. 
A further specimen shows a still greater advance, in having the pectoral band 
complete in form but brown in colour, with a few white feathers intermixed, the 
dusky-brown on the top of the head still retained, the black on the under wdng- 
coverts increased as also the black on the sides of the breast. 
* The Plate is lettered Erythrogonys cinctus. 
38 
