The Mallt y Nos, or night-fiend, is a death-omen mentioned by Rev. D. R. Thomas in the 'Archæologia Cambrensis'; and Croker[94] gives as the Welsh parallel of the Irish death-coach a spectre called ceffyl heb un pen, or the headless horse. The marw coel, or 'yellow spot before death,' is another death-omen which I have been able to trace no further than the pages where I find it.[95]