MYRTUS, in Ancient Geography, a small island near Carylus in Euboea, which gave name to the Mare Myrtoum. Others, according to Pausanias, derive the appellation from Myrto, the name of a woman. Strabo extends this sea between Crete, Argia, and Attica. Pausanias beginning it at Euboea, joins it to Helena, a desert island, with the Ægean sea. Ptolemy carries it to the coast of Caria. Pliny says, that the Cyclades and Sporades are bounded on the west by the Myrtoan coast of Attica.