John Collier (1850 - 1934), The Priestess of Delphi, 1891, Art Gallery of South Australia, Adelaide
STRIX or STRIGA
Originally strzyga (ˈstʂɨɡa).
Strzyga is a kind of demon, or maybe more of a vampire in slavic (especially Polish) folklore. It probably evolved from Roman Strix, which was a female demon with huge claws and was drinking human blood.
In polish folklore, Strzygas were man born with two souls, two hearts and two sets of teeth or babies born with teeth already. It was belived that the second soul stayed on Earth even after death of the first one, but it had to hunt and drink blood so it could survive. Strzygas were belived to be able to transform into owls. They were drinking blood and eating their victims insides. Just as it is with vampires, one could kill Strzyga only with fire or by thrusting nails or pales into its body.
In roman mythology a strix (plural: striges or “veneficae”) was generally considered a witch transformed into a horrible nocturnal bird.
Around 100 - 30 b.C. witches used to hold nocturnal rites on the Esquiline hill (Rome) since at the time there was a cemetery for peasants and poor people.
The roman poet Horace in one of his satires describes the situation tells us that even the gods were disgusted of those rituals: the statues covered their eyes in order to avoid seeing the witches’ necromantic celebration.