In old German the concepts of worm, snake, and dragon coalesce, as they do in Latin (vermis, serpens, draco). The underworld signifies hell and the grave. The worm or serpent is all-devouring death.
Jung identifies the symbolic coalescence of worm, serpent, and dragon as a cross-cultural marker of chthonic dissolution, providing the depth-psychological framework within which parasitic worm-figures such as the Three Worms acquire their destructive ontological weight.
, Mysterium Coniunctionis: An Inquiry into the Separation and Synthesis of Psychic Opposites in Alchemy, 1955thesis