The Palici (Ancient Greek: Παλικοί, romanized: Palikoi, singular Palicus (Παλικός)),[1] or Palaci, were a pair of indigenous Sicilian chthonic deities in Roman mythology, and to a lesser extent in Greek mythology.
Their cult centered on three small lakes that emitted sulphurous vapors in the Palagonia plain, and as a result these twin brothers were associated with geysers and the underworld.
There was also a shrine to the Palaci in Palacia, where people could subject themselves or others to tests of reliability through divine judgement; passing meant that an oath could be trusted.
One version of the legend attributes their parentage to sky god Zeus and nymph Aetna.
[6] Polish historian Krzysztof Tomasz Witczak and Daria Zawiasa suggest the Palici may derive from the old Indo-European mytheme of the divine twins.