I. Apolloniates, a celebrated Ionian philosopher, pupil of Anaximenes, Cic. N. D. 1, 12, 29.—
II. The well-known Cynic philosopher of Sinope, Cic. Tusc. 1, 43, 104; id. N. D. 3, 34; id. Mur. 36 et saep.—
III. A Stoic, teacher of Carneades and Laelius, Cic. Div. 1, 3, 6; id. Fin. 2, 8; id. Tusc. 4, 3; id. de Sen. 7 et saep.—
IV. A friend of M. Caelius Rufus, Cic. Fam. 2, 12, 2; id. Cael. ib. 8, 8, 10.