Hagias and Dercylus wrote Argolica together. Athenaeus 3: they call strobiloi astrabeloi, useful for trumpeting. A Homeric scholion (Il. 11.690) has Hagias in Argolica book 1: Neleus took Geryon’s cattle, whence Heracles gave Nestor the rule. Clement, Stromateis 1.21, cites book 3 for the fall of Troy on the eighth of vanishing Panemos. A Vatican scholion on Euripides, Troades 16, attributes to their circle a three-eyed Zeus Herkeios. Athenaeus 14 quotes Agias the musician on storax at the Dionysia.
The fragments are collected in Müller's Fragments of the Greek Historians (vol. 4, pp. 292–293, 670). The pair is dated to the fourth century BCE, and the Argive Hagias is not to be identified with the cyclic Agias of Troezen alone.
What survives is that Argive pair: shells, Neleus, the date of Troy, and a three-eyed Zeus.
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