Scorpius Identified: Libra
“There is a certain place where the scorpion with his tail and curving claws sprawls across two signs of the zodiac”, wrote Ovid in his Metamorphoses. He was referring to the ancient Greek version of Scorpius, which was much larger than the constellation we know today. The Greek scorpion was in two halves: one half contained its body and sting, while the front half comprised the claws. The Greeks called this front half Chelae, which means ‘claws’. In the first century BC the Romans made the claws into a separate constellation, Libra, the Balance. — (x)
Though select portions of Greek mythology could be considered as works of fiction to the entities of the Cosmos, there's a truth in various aspects of them as well; such as the origin of Libra and its connection to Scorpius. Upon the creation of each Zodiac; Scorpius, the constellation of extremes bore too intense in comparison to its kin— there was an instability which couldn't be rectified on the constellation's own terms. Which is why the constellation was subjected to a separation— the "balance" of Scorpius would become its own; not to merely function as a balance to each fellow Sign, but to act as an almost conscience to Scorpius directly.
What was once perceived as the claws which were the supposed balance of Scorpius' portrayal in the skies are now the scales, representing Libra. At the end of the line, they may be two separate constellations, but more intertwined than any of their kin can comprehend.