Lizard-like KURUKADI and MUMBA are Twin Iguana Spirits. One white, one black.
They rescued some women being pursued by a moon deity (KIDILI?) by killing him with a boomerang. But his spirit went back to the moon which is why it looks so dead.
They themselves became the constellation of Gemini. We find it hard to come to terms with the idea of iguanas throwing boomerangs.