Grand Duke of Hades. According to Johan Weyer, Amduscias has the form of a unicorn, but when evoked, appears in human shape. He gives concerts, at the command of men, where one hears the sound of all kinds of musical instruments but can see nothing. It is said that the trees themselves bend to his voice. He commands 29 legions.
Weyer, Johannes. Witches, Devils, and Doctors in the Renaissance: Johann Weyer, De Praestigiis. Edited by George Mora. Binghamton, N.Y.: Medieval and Renaissance Texts and Studies, 1991.