in Ancient Geography, a small island near Carystus, in Euboea, which gave name to the Mare Myrtoum. Strabo extends this sea between Crete, Argia, and Attica. Pausanias, making it commence at Euboea, joins it at Helena, a desert island, with the Ægean Sea; but Ptolemy carries it to the coast of Caria; and Pliny says that the Cyclades and Sporades are bounded on the west by the Myrtoan coast of Attica.