Apollodorus Library 3.8.1

[1]
  Let us now return to Pelasgus, who, Acusilaus says, was a son of Zeus and Niobe, as we have supposed, ¹ but Hesiod declares him to have been a son of the soil. He had a son Lycaon ² by Meliboea, daughter of Ocean or, as others say, by a nymph Cyllene; and Lycaon, reigning over the Arcadians, begat by many wives fifty sons, to wit: Melaeneus, Thesprotus, Helix, Nyctimus, Peucetius, Caucon, Mecisteus, Hopleus, Macareus, Macednus, Horus, Polichus, Acontes, Evaemon, Ancyor, Archebates, Carteron, Aegaeon, Pallas, Eumon, Canethus, Prothous, Linus, Coretho, Maenalus, Teleboas, Physius, Phassus, Phthius, Lycius, Halipherus, Genetor, Bucolion, Socleus, Phineus, Eumetes, Harpaleus, Portheus, Plato, Haemo, Cynaethus, Leo, Harpalycus, Heraeeus, Titanas, Mantineus, Clitor, Stymphalus, Orchomenus, These exceeded all men in pride and impiety; and Zeus, desirous of putting their impiety to the proof, came to them in the likeness of a day-laborer. They offered him hospitality and having slaughtered a male child of the natives, they mixed his bowels with the sacrifices, and set them before him, at the instigation of the elder brother Maenalus. ³ But Zeus in disgust upset the table at the place which is still called Trapezus, ⁴ and blasted Lycaon and his sons by thunderbolts, all but Nyctimus, the youngest; for Earth was quick enough to lay hold of the right hand of Zeus and so appease his wrath.