Green’s Dictionary of Slang

(Aus.) Western Australia; also attrib.; thus Westralian, Westralienne, Western Australian.

1894		Truth (Sydney) 7 Jan. 2/1: The ‘six families’ that rule Westralia [...] view the coming Parliamentary elections in May next as a threatening simoon.
1896		Studio Oct. 151: The latest example is the El Dorado of Western Australia, or as she now is beginning to be more generally called, ‘Westralia,’ a name originally invented by the necessity of the electric cable, which limits words to ten letters, or else charges double.
1900		Bulletin (Sydney) 21 July 28/1: It is quite likely that the Westralian nigger-owner and nigger-driver would wave his enthusiastic hat in absolute sincerity. Even in the Southern States, in the days of Uncle Thomas, you could raise a deafening cheer for the Flag of Liberty any day.
1900–10		Stephens & O’Brien Materials for a Dict. of Aus. Sl. [unpub. ms.] 62: Westralia is the last province which is rapidly coping with the nigger difficulty.
1904		Sun. Times (Perth) 3 Jan. 3/3: The Westralian Turf Club’s carnival was continued on Wednesday.
1908		E.G. Murphy ‘A Gibney-Riley Wrangle’ in Jarrahland Jingles 22: The voice of vast Westralia rose as through a megaphone.
1914		H. Lawson ‘I’ll Bide’ in Roderick (1972) 826: He’d been in Westralia, after Coolgardie, where I had been.
1920		Bulletin (Sydney) 12 Feb. 14/2: He leaves two sons, one in Queensland, one in Westralia.
1931		A. Bennett Teresa of Watling Street 222: You have first to prove that I indeed am a power on the Westralia market.
1955		N. Pulliam I Travelled a Lonely Land (1957) 179: While you’re wandering around in Westralia, you’ll see more flowers and trees [...] than you ever imagined.
1965		‘Westralia’ in J. Lahey Great Aus. Folk Songs 13: Land of forests, fleas and flies, / Blighted hopes and blighted eyes, / Art thou hell in earth’s disguise, / Westralia?