πεντηκόνταρχος
From LSJ
εἰς πέλαγος σπέρµα βαλεῖν καὶ γράµµατα γράψαι ἀµφότερος µόχθος τε κενὸς καὶ πρᾶξις ἄκαρπος → throwing seeds and writing letters at sea are both a vain and fruitless endeavor
English (LSJ)
ὁ, at Athens,
A commander of fifty men, serving under the τριήραρχος, X. Ath. 1.2, D.50.18, 19, 24 (wrongly expld. by Harp. as commander of a πεντηκόντερος). 2 generally, leader of a company of fifty, LXX Ex. 18.21, 4 Ki.1.9.
