Physician and court doctor of *Ptolemy (1) IV (Philopator), follower of *Herophilus. Works: Νάρθηξ (a pharmacopoeia, with descriptions of plants and roots); Περὶ δακέτων (on snake-bites); Περὶ τῶν ψευδῶς πεπιστευμένων (against superstitious beliefs); Περὶ στεφάνων (on wreaths: all lost except for fragments). *Eratosthenes berated him as a ‘literary *Aegisthus’ (Etym.