For some reason this word appears like this in several places, surely feminized as it could happen with cronopias, but in the gliglico of Rayuela (Julio Cortázar, 1963) it is like ulucordio.
ULUCORDIA that touches the ulucordium. a ulucordium is a musical instrument that reproduces the sound of the wind as it passes through cracks and slits, action and effect known as howling.