Iusta ultio.

Just revenge

Raptabat volucres captum pede corvus in auras
Scorpion, audaci praemia parta gulae.
Ast ille infuso sensim per membra veneno,
aptorem in Stygias compulit ultor aquas.
O risu res digna! aliis qui fata parabat,
Ipse perit, propriis succubuítque dolis.[1]

A raven was carrying off into the flying winds a scorpion gripped in its talons, a prize won for its audacious gullet. But the scorpion, injecting its poison drop by drop through the raven’s limbs, despatched the predator to the waters of the Styx and so took its revenge. - What a laughable thing! The one who was preparing death for others himself perishes and has succumbed to his own wiles.

SImile apud Aesopum de corvo cibum quaeritáte,
convertitur in id quod vulgò dici solet, captores
capi, raptores etiam à raptoribus abripi & illaquea-
ri: ut cùm à veneficis falsarii, calumniatores, & id
genus alii tolluntur de medio, vel etiam latrones
à praedonibus spoliantur.