What is "myrmidone"

In Greek mythology, the name Myrmidone may refer to:

• Myrmidone, one of the Danaids, who married and killed Mineus, a son of Aegyptus.
• Myrmidone of Lemnos, who killed Hypsipyle's two half-brothers, Cydon and Crenaeus, and Hypsipyle's fiance Gyas on the night the Lemnian men were massacred by their women.