ἐξ ὀνύχων λέοντα τεκμαίρεσθαι → judge by the claws, judge by a slight but characteristic mark, small traits give the clue to the character of a person, deduce something from a small indication, identify a lion from its claws
ĕrōtўlŏs, ī, f. (ἐρωτύλος), pierre précieuse inconnue : Plin. 37, 160.
erōtylos, ī, m. (ἐρωτύλος), ein uns unbekannter Edelstein, Plin. 37, 160.
erotylos, i. m. :: 術士之石名