Lernaean Hydra
The serpent Hydra is a star constellation representing either the serpent thrown angrily into the sky by Apollo or the Lernaean Hydra as defeated by Heracles for one of his Twelve Labors. The constellation Serpens represents a snake being tamed by Ophiuchus the snake-handler, another constellation. The most probable interpretation is that Ophiuchus represents the healer Asclepius.