The demon Sitri appears in the grimoires Book of Incantations, The Discoverie of Witchcraft, The Book of Spirits, Pseudomonarchia Daemonum, and The Lesser Key of Solomon
From The Lesser Key of Solomon, Crowley/Mathers edition:
The Twelfth Spirit is Sitri. He is a Great Prince, and appeareth at first with a Leopard's head and the Wings of a Gryphon, but after the command of the Master of the Exorcism he putteth on Human shape, and that very beautiful. He enflameth men with Women's love, and Women with Men's love; and causeth them also to show themselves naked if it be desired. He governeth 60 Legions of Spirits. His Seal is this, to be worn as a Lamen before thee, etc.