I can’t seem to find a great deal of information about the art and life of Gustav-Adolf Mossa (1883-1971), a Symbolist painter, whose greatest works only came to light after his death. There is something of the plague years in his art. The black plague and dance of death play themselves out on his canvas in the context of the modern world, remade in fantasy. Having been seriously injured during the First World War, his background in painting for the Italian carnivals no doubt adds to this merry-yet-fatal quality about much of his work. I also hear that he was interest in Baudelaire, which may help explain more than a little of his subject matter.
For More Information:
French Wikipedia page on Mossa: http://fr.wikipedia.org/wiki/Gustav-Adolf_Mossa
A facebook group dedicated to him: http://www.facebook.com/group.php?gid=55237104934#!/group.php?gid=55237104934