Goetia - S. L. MacGregor Mathers (1904)
The Seventeenth Spirit is Botis, a Great President, and an Earl.
He appeareth at the first show in the form of an ugly Viper, then
at the command of the Magician he putteth on a Human shape with
Great Teeth, and two Horns, carrying a bright and sharp Sword in
his hand. He telleth all things Past, and to Come, and reconcileth
Friends and Foes. He ruleth over 60 Legions of Spirits, and this
is his Seal, etc.
Pseudomonarchia daemonum - Johann Wier (1583)
Botis, otherwise Otis, a great president and an earle he commeth
foorth in the shape of an ouglie [lit. 'worst'] viper, and if he
put on humane shape, he sheweth great teeth, and two hornes,
carrieng a sharpe sword in his hand: he giveth answers of things
present, past, and to come, and reconcileth friends, and foes,
ruling sixtie legions.