Order PASSERIFORMES . 
No. 462. 
Family MUSCICAPIDM. 
PACHYCEPHALA ROBUSTA. 
BIG-BILLED THICKHEAD. 
(Plate 392.) 
Pachycephala robusta Masters, Proc. Linn. Soc. N.S.W., Vol. I., p. 49, Feb. 1876 : Cape 
York, Queensland. 
Pachycephala robusta Masters, Proc. Linn. Soc., N.S.W., Vol. I., p. 49, Feb. 1876 ; Ramsay, 
ib., Vol. II., p. 181, 1878 ; id., Tab. List Austr. Birds, p. 5, 1888 ; Mathews, Handl. 
Birds Austral., p. 85, 1908 ; Macgillivray, Emu, Vol. XVII., p. 197, 1918 (N.Q.) 
Pachycephala melanura (not Gould) Masters, Proc. Linn. Soc. N.S.W., Vol. I., p. 48, 1876 ; 
Gadow, Cat. Birds Brit. Mus., Vol. VIII., p. 186, 1883 (pt.) ; North, Austr. Mus. 
Spec. Cat. No. 1, Vol. II., p. 26, 1906 (pt.) ; Hill, Emu, Vol. X., p. 281, 1911 (N.W.A.) ; 
Barnard, ib., Vol. XIV., p. 48, 1914 (N.T.) ; H. L. White, ib., Vol. XVI., p. 226, 1917 
(N.T.) 
Eopsaltria hilli Campbell, Emu, Vol. X., p. 168, Dec. 1st, 1910 : Hecla Island, Parry Harbour, 
Northern Territory ; Mathews, Bull Brit. Om. Club, Vol. XXVII., p. 41, 1911 ; 
Campbell, Emu, Vol. XI., p. 246, 1912. 
Pachycephala gutturalis robusta Mathews, Nov. Zool., Vol. XVIII., p. 313, 1912. 
Pachycephala gutturalis consobrina Mathews, Austral Av. Rec., Vol. I., pt. 3, p. 76, June 28th, 
1912 : Buchanan Island, Northern Territory. 
Pachycephala gutturalis violetce Mathews, ib : (Daly River) West Northern Territory. 
Pachycephala pectoralis violetce Mathews, List Birds Austr., p. 179, 1913. 
Pachycephala pectoralis consobrina Mathews, ib. 
Pachycephala pectoralis robusta Mathews, ib. 
Pachycephala gutturalis longirostris Zietz, South Austr. Omith., Vol. I., pt. I., p. 15, Jan. 1st, 
1914 : Melville Island, N.T. ; Mathews, Austral Av. Rec., Vol. II., p. 93, 1914. 
Not P. longirostra Gould, Synops. Birds Austr., p. in., pi. (55), 1838. 
Pachycephala robusta robusta Mathews, Austral Av. Rec., Vol. III., pt. 6, p. 137, June 25th, 
1918. 
Pachycephala robusta hilli Mathews, ib. 
Pachycephala robusta violetce Mathews, ib. 
Pachycephala robusta consobrina Mathews, ib. 
Pachycephala robusta borroloola Mathews, ib. : McArthur River, Northern Territory. 
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