2) Los kiang-kuei, los astral bulgaros, los beregyni, los rusalki
y los upiri eslavos.
That overdetermination is what makes it possible to accept Naroditskaya's point about the provenance of all those rusalka operas even if we know that the Dnepr rusalki
who inhabit Russian operas had swum over from the Danube, where they had been featured in Austrian Singspiel about Donauweibchen that Russian theatergoers knew very well--and even if we recall that women have been enticing and ruining clueless men in song and story ever since Adam and Eve.
Nymphs and spirits of water and air, they are called, in various languages, rusalki
, nixies, wilis, and neraida.