What is "calliphon"

Calliphon (or Callipho, ; 2nd century BC) was a Greek philosopher, who probably belonged to the Peripatetic school and lived in the 2nd century BC. He is mentioned several times and condemned by Cicero as making the chief good of man to consist in a union of virtue and bodily pleasure , or, as Cicero says, in the union of the human with the beast.