Proper noun

1. An early proposed name for parts of Victoria (Australia) explored by Thomas Mitchell (1792-1855), Latin for “Fortunate Australia” or “Happy Australia”. http://www.whitehat.com.au/Australia/History/PlaceNames.asp

   1839: I named this region Australia Felix, the better to distinguish it from the parched deserts of the interior country where we had wandered so unprofitably and so long. — Thomas Mitchell, Three Expeditions into the Interior of Eastern Australia, volume 2 http://www.gutenberg.org/etext/13033