What is "amphis"

Amphis ( Greek: Ἄμφις) was an Athenian Comic poet of uncertain origin from approximately the 4th century BC.

Pollux seems to refer to Amphis as a Middle Comic poet, and Amphis' own repeated references to the philosopher Plato place him in the early to mid-4th century BC. His name is not Athenian, and he was probably from the island of Andros (thus Kirchner).