Archwitch

Others, like the archwitch Kálarátri or “black night,” are of repulsive appearance; she has dull eyes, a depressed flat nose; […]

And it was strange that these two archwitches should slumber when the whole world of shadows was astir.

The poetic basis of this composition is the Russian legend that on the night of Ivan Koupalo the archwitch, Baba-Yaga, with sorcerers and sorceresses, comes to the Bald (or Bare) Mountain to celebrate the witches’ Sabbath.