In the original Greek, alk-MEH-ne. In English, alk-MEE-nee. An alternative spelling is Alcmena (alk-MEN-a in Greek, alk-MEE-na in English).
masculine list:
https://www.behindthename.com/pnl/191050/124079feminine list:
https://www.behindthename.com/pnl/191050/124080