Amduscias is known as the Duke of Hades, according to Johan Weyer, and took the form of a unicorn, but when invoked appeared in human shape. He gave concerts at the command of men, where music was heads coming from many invisible musical instruments. It is said even trees themselves bend to his voice. He commands twenty-nine legions. A.G.H.
Spence, Lewis, An Encyclopedia of Occultism,New York, Carol Publishing Group Edition, 1996, p.17