(Ἰχναῖα), that is, the tracing goddess, occurs as a surname of Themis, though in her case it may have been derived from the town of Ichnae, where she was worshipped (Hom. Hymn. in Apoll. Del. 94; Lycoph. 129; Strab. ix. p.435 ; Steph. Byz. s. v. Ἴχναι), and a surname of Nemesis. (Brunck, Anal. ii. pp. 1. 86.)
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890