Bifrons
A demon of monstrous guise who, according to Wierius, often took the form of a man well versed in Astrology and planetary influences. He excels in geometry, is acquainted with the virtues of herbs, precious stones and plants, and it is said that he is able to transport corpses from one place to another. He it is also who lights the strange corpse-lights above the tombs of the dead. Twenty six of the infernal regions obey his behests.
Bigois or Bigotis: A sorcerer of Tuscany who, it is said, composed a learned work on the nature of prognostications, especially those connected with thunder and lightning. The book is said to be irretrievably lost. It is thought that Bigois is the same as Bagoe (q.v.), a sibly of Erithryea, but this is merely of the nature of surmise.