"I have said that the miserable and criminous old woman whom the fen-men had killed was buried a bare ten yards away from the two conjurors: and their eyes were often fixed upon her grave as upon the point to which their spells were directed. Looking over at the grave, Hardman beheld crouched upon it a shape which there was small likelihood of his ever forgetting. It was the figure, one would say, at first sight, of an enormous bat, with folded wings and hints of head approaching the human form. In a short moment, Hardman caught sight of the folds of wrinkled skin or hide that hung down from the cheeks, of the wide ears which shone transparent in the moonlight, and of the two lines of dusky red fire which marked the almost closed eyes."
M.R. James, The Fenstanton Witch