ἐχιδνοκέφαλος
From LSJ
ὅτι χρὴ τοῦ μέλιτος ἄκρῳ δακτύλῳ, ἀλλὰ μὴ κοίλῃ χειρὶ γεύεσθαι → that honey should be tasted with the fingertip and not by the handful
English (LSJ)
ον,
A snakeheaded, Sch.E.Ph.1136.
German (Pape)
[Seite 1126] natterköpfig, Schol. Eur. Phoen. 1136.