τραχὺς ἐντεῦθεν μελάμπυγός τε τοῖς ἐχθροῖς ἅπασιν → he is a tough black-arse towards his enemies, he is a veritable Heracles towards his enemies
per-calleo: ŭi, ēre, v. a.,
I to know or understand well: quinque et viginti gentium linguas, Gell. 17, 17, 2.
