2. A rhetorician, and writer on the art of rhetoric, mentioned by Aristotle in conjunction with Callippus. (Rhet. 2.23.21.) It is impossible to determine whether he is the same as the rhetorician of this name mentioned by Cicero (De Orat. 3.21, where several commentators have fallen into the extraordinary blunder of supposing that Pamphilus the painter is referred to); or as the one mentioned by Quintilian (3.6.34); or whether all three were different persons.