The demon Andromalius appears in the grimoires Book of Incantations and The Lesser Key of Solomon
From The Lesser Key of Solomon, Crowley/Mathers edition:
The Seventy-second spirit in Order is named Andromalius. He is an Earl, Great and Mighty, appearing in the form of a Man holding a Great Serpent in his Hand. His Office is to bring back both a Thief, and the Goods which be stolen; and to discover all Wickedness, and Underhand Dealing; and to punish all Thieves and other Wicked People; and also to discover Treasures that be Hid. He ruleth over 36 Legions of Spirits. His Seal is this, the which wear thou as aforesaid, etc.