οὕτως ἐξ ἐχθρῶν αὐτοκτόνα πέμπετο δῶρα, ἐν χάριτος προφάσει μοῖραν ἔχοντα μόρου → thus mutual gifts that bring death were bestowed by enemies, gifts that brought the lot of death in the name of a favor
cŏlubrĭfer: fĕra, fĕrum, adj. coluberfero,
I serpent-bearing, an epithet of Medusa (cf. coluber and colubra): monstrum, Ov. M. 5, 241: collum, Luc. 9, 677.