Tir

Tir -The angel of June in ancient Persian lore; also the angel governing the 13th day of the month.  Tir was regent of the planet Mercury and has been represented as having the body of a fish, with a boar's face.  His one arm is black, the other white; on his head rests a crown.  In Muslim lore, Tir is the demon of fatal accidents and one of the sons of the fallen archangel Iblis.  (a)

Resource List - all entries are taken verbatim from the original source:

(a) "The Dictionary of Angels" by Gustav Davidson, © 1967