(Μητροκλῆς), of Maroneia, a brother of Hipparchia, was at first a disciple of Theophrastus, but afterwards he entered the school of Crates, and became a cynic. He seems to have been a man of great ability, and having reached an advanced age, he drowned himself. He wrote several works, all of which he is said to have burnt ; one of them bore the title of Χρείαι, of which a line is preserved in Diogenes Laertius (6.6; comp. 6.33, 2.102; Stob. Serm. tit. 116. 48).
[L.S]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