The Libyan Sibyl, was the prophetic priestess presiding over the Zeus-Ammon Oracle at Lybia,

The word Sibyl comes (via Latin) from the ancient Greek word sibylla, meaning prophetess. There were many Sibyls in the ancient world, but the Libyan Sibyl was

The Libyan Sibyl, by name Lamia, meaning Snake or Medusa.

Euripides mentions the Libyan Sibyl in the prologue of the Lamia.