In the circuit of the ancient wall of Thebes
were gates seven in number, and these remain to-day. One got its name, I learned, from Electra, the sister of Cadmus, and another, the Proetidian, from a native of Thebes
. He was Proetus, but I found it difficult to discover his date and lineage. The Neistan gate, they say, got its name for the following reason. The last of the harp's strings they call nete, and Amphion invented it, they say, at this gate. I have also heard that the son of Zethus, the brother of Amphion, was named Neis, and that after him was this gate called.