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
vēlōcĭter: adv., v. velox.
vēlōcĭtĕr¹² (velox), rapidement, promptement, avec prestesse : Ov. M. 4, 509 ; Quint. 1, 1, 28 ; Plin. 16, 241 ; velocius Cic. Rep. 6, 29 ; -issime Cic. Tim. 30 ; Cæs. G. 5, 35.