Written after Hume's departure from Australia in 1888, this work is included in AustLit because it has been published in an Australian science fiction series.
First published in serialised format, under the title The Death’s Head, in the Express and Telegraph (Adelaide) in daily instalments, Saturday, 4 May 1907 – Friday, 21 June 1907.
First published in book form, under the title The Crowned Skull, by Werner Laurie in London in 1908.