In demonology, Halphas (listed in Skinner & Rankine's edition as Malthas,[1][2] and in the Crowley/Mathers edition as Halphas, Malthus, or Malphas)[1] is the thirty-eighth demon in the Ars Goetia in the Lesser Key of Solomon[1][2] (forty-third in Johann Weyer's Pseudomonarchia Daemonum),[3] ranked as an earl.
Most manuscripts describe Halphas as a hoarse-voiced stock dove[1][2] (though Weyer and Collin de Plancy's Dictionnaire Infernal describe him as a stork),[3][4] who supplies weapons and ammunition[1][2][3][4] for towers[1][2] (Weyer and de Plancy have "towns" or "villes" instead),[3][4] sends men to war, and commands 26 legions of spirits.[1][2][3][4]
According to Skinner & Rankine, Halphas is opposed by the Shemhamphorasch angel Haamiah.[5]