Francesco Maria Guazzo prepared this classification of demons based on a previous work by Michael Psellus. It was published in his book Compendium Maleficarum in 1608.
- Demons of the superior layers of the air, which never establish a relationship with people.
- Demons of the inferior layers of the air, which are responsible for storms.
- Demons of earth, which dwell in fields, caves and forests.
- Demons of water, which are female demons, and destroy aquatic animals.
- Demons of the underground part of the earth, responsible of keeping hidden treasures, causing earthquakes, and causing the crumbling of houses.
- Demons of the night, which are black and too evil. These demons avoid daylight.
