WHITE-BACKED MAGPIE. 
Gymnorhina dorsalis Campbell, Proc. Boy. Soc. Victoria, Ser. II., Vol. VII., 1894, p. 206, 
January, 1895 : South-west Australia (Swan Biver) ; Hall, Key Birds Austr., 
p. 31, 1899 ; Campbell, Nests and Eggs Austr. Birds, Vol. I., p. 296, 1901 ; Milligan, 
Emu, Vol. II., p. 73, 1902, Vol. III., pp. 17, 22, 100, 1903 ; id., ib., pi. x., 
p. 177-9, 1904 ; Degen, ib., p. 201 ; Hill, ib., p. 227 ; Milligan, ib., Vol. IV., p. 9, 
1904; North, Austr. Mus. Spec. Cat. No. 1, Vol. IT., p. 2, 1906 ; Mathews, Hand! 
Birds Austral., p. 83, 1908; Whitlock, Emu, Vol. VIII., p 181, 1909; Gibson, 
ib., Vol. IX., p. 74; Crossman, ib., p. 89; Whitlock, ib., p. 207, 1910; Carter, 
Emu, Vol. X., p. 296, 1911 ; H. L. White, ib., Vol. XIII., p. 48, 1913 ; Orton and 
Sandland, ib., p. 80 ; S. A. White, ib., Vol. XX., p. 129, 1921 ; Ashby, ib., p. 136; 
Mellor, ib., p. 139; Alexander, ib., p. 166. 
Cracticus hypoleucus hypoleucus Mathews, Nov. Zool., Vol. XVIII., p. 373, Jan. 31st, 1912. 
Cracticus hypoleucus leuconotus Mathews, ib. 
Cracticus hypoleucus intermedins Mathews, ib. : (Cooma) New South Wales ; id., Austral 
Av. Bee., Vol. 1, p. 60, 1912. 
Cracticus hypoleucus dorsalis Mathews, ib. 
Gymnorhina hypoleuca hypoleuca Mathews, List Birds Austr., p. 241, 1913. 
Gymnorhina hypoleuca leuconota Mathews, ib. ; Belcher, Birds Geelong, p. 302, 1914; 
S. A. White, Emu, Vol. XVIII., p. 23, 1918 (S.A.). 
Gymnorhina hypoleuca intermedia Mathews, List Birds Austr., p. 242, 1913. 
Gymnorhina hypoleuca dorsalis Mathews, ib. 
Distribution. Southern Australia and Tasmania, New South Wales, Victoria, South 
Australia and South-west Australia. 
Adult male. Crown of head, nape, sides of face, including the lores, sides of neck, throat, 
breast, abdomen, sides of body, thighs, and axillaries glossy black ; scapulars, 
flight-quills, apical portion of tail, and the outer web of the outermost feather 
on each side also black : rictal-bristles black and directed downwards ; the feathers 
on the chin have black hair-like tips ; hind-neck, entire back, upper tail-coverts 
and upper wing-coverts, white like the basal portion of the tail, both above and 
below, vent and under tail-coverts ; bastard-wing black ; some of the primary- 
coverts black with white on the basal portion of the outer webs ; shafts of tail- 
feathers blackish on white portion of the upper-surface ; submarginal under wing- 
coverts black, the greater series and under-surface of flight-quills glossy black 
like the apical portion of the tail below. Bill slate with blue-black tip. Legs 
black. Total length 430 mm. ; culmen 54, wing 290, tail 148, tarsus 68. Figured. 
Collected at Cooma, New South Wales, in June, 1896, and is the type of Cracticus 
hypoleucus intermedium. 
Adidt female. Very similar to the adult male but duller, the light parts being grey. 
Adult female. ( Gymnorhina dorsalis.) General colour both on the upper and under-surface 
black, glossed with steel-blue, varied with white, or greyish-white ; rictal-bristles 
black and directed downwards ; the feathers on the chin have hair-like tips ; hind- 
neck and sides of neck white, becoming greyish-white on the mantle and back, 
with black centres to the feathers, which are reduced to a shaft-streak only on the 
rump ; upper wing-coverts and edge of wing white, varied with black at the tips of 
the greater series ; bastard-wing and outer primary-coverts black, the inner primary- 
coverts white at the base and along the greater portion of the outer-webs ; upper 
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