Pausanias Description of Greece 2.18.4

[4] The Argives are the only Greeks that I know of who have been divided into three kingdoms. For in the reign of Anaxagoras, son of Argeus, son of Megapenthes, the women were smitten with madness, and straying from their homes they roamed about the country, until Melampus the son of Amythaon cured them of the plague on condition that he himself and his brother Bias had a share of the kingdom equal to that of Anaxagoras. Now descended from Bias five men, Neleids on their mother's side, occupied the throne for four generations down to Cyanippus, son of Aegialeus, and descended from Melampus six men in six generations down to Amphilochus, son of Amphiaraus.

[4] The Argives are the only Greeks that I know of who have been divided into three kingdoms. For in the reign of Anaxagoras, son of Argeus, son of Megapenthes, the women were smitten with madness, and straying from their homes they roamed about the country, until Melampos the son of Amythaon cured them of the plague on condition that he himself and his brother Bias had a share of the kingdom equal to that of Anaxagoras. Now descended from Bias five men, Neleids on their mother’s side, occupied the throne for four generations down to Kyanippos, son of Aigialeus, and descended from Melampos six men in six generations down to Amphilokhos, son of Amphiaraos.