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
longē: adv., v. longus. A.
longē,⁶
1 en long, en longueur : longe lateque Cic. Div. 1, 79, en long et en large ; Cæs. G. 4, 35, 3, sur une vaste étendue ; longe gradi Virg. En. 10, 572, faire de grands pas