The Family of Inachus, Including Io, Bellerophon, and Perseus (2. 1. 1-2. 4. 8)
BOOK 21 Now that I have narrated the story of the line of Deucalion, I shall next speak of that of Inachus.
Ocean and Tethys had a son Inachus, after whom a river in Argos is named. To him and to Melias were born sons named Phoroneus and Aegialeus. After Aegialeus died without offspring, the entire country was called Aegialia. Phoroneus ruled over all the land later called the Peloponnese and had two children, Apis and Niobe, by the nymph Teledice.
Apis converted his power into a tyranny and was a violent despot, naming the Peloponnese Apia after himself. Thelxion and Telchis conspired against him and he died childless. He was believed to be a god and called Sarapis.1
Zeus and Niobe had a son Argus. ( Niobe was the first mortal woman with whom Zeus had intercourse.) ∣ According to Acusilaus, they also had a son Pelasgus after whom the inhabitants of the Peloponnese were called Pelasgians. Hesiod, however, says that Pelasgus was born from the earth. I shall speak of him below [ 3. 8. 1]. ∣ Argus received the kingship and called the Peloponnese Argos after himself. He married Evadne, the daughter of Strymon and Neaera, and by her had Ecbasus, Piras, Epidaurus, and Criasus, who inherited the kingdom.
Ecbasus had a son Agenor, who had a son Argus, called the All- Seeing One. He had eyes in all parts of his body. Being very strong, he killed the bull which was devastating Arcadia and wore its hide. He also fought and killed Satyr, who was injuring the Arcadians by carrying away their livestock. Echidna, the daughter of Tartarus and Earth, was in the habit of kidnapping passers-by. Argus is said to have killed her after watching for her to go to sleep.2 He avenged Apis by killing those who murdered him.
Argus and Ismene, the daughter of Asopus, had a son Iasus, said to