3. An officer in the service of Ptolemy III. (Euergetes), king of Egypt, who was sent by him to explore the shores of the Red Sea and the coasts of Ethiopia. Much of the information recorded by Agatharchides was derived from his authority. (Diod. 3.18.)
[E.H.B]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890