Poludnica (Lady Midday) - a noon demon in Slavic mythology. She was usually pictured as a young woman dressed in white that roamed field bounds. She assailed folk working at noon causing heatstrokes and aches in the neck, sometimes she even caused madness.
Lamia- a Greek mythological female demon. Half-woman and half-serpent, she was described as a child-devouring murderer. Lamia were the daughters and granddaughters of Lilith... who bore the succubi, who bore the vampire.