(Σαυρίας), a very ancient artist of Samos, to whom some ascribed the invention of that first step in the art of drawing, which was called σκιαγραφία, that is, tracing the outline of a shadow. The statement, however, deserves little credit, as it rests on the sole authority of Athenagoras (Athenag. Legat. pro Christ. 14, p. 59, ed. Dechair).
[P.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