The creature behind the Bag of Devouring

nterestingly, I'm seeing a reference to the creature as having been written up for 1E AD&D in Dragon issue #89, Creature Catalog I, as the "Ihagnim".

Unfortunately, my Dragon magazine CD archive is missing that article -- it was a feature in the center that wasn't paginated with the rest of the magazine (first time I ever noticed that). Maybe someone has issue #89 kicking around, with the article still attached.