(anc. geog.), an island of Greece in the Saronic bay, overagainst the port of Troezen, at the distance of 40 stadia. Hither Demophenes went twice into banishment; and here he died. Neptune was said to have accepted this island from Apollo in exchange for Delos. The city stood on a high ridge nearly in the middle of the island, commanding an extensive view of the gulf and its coasts. There was his holy temple. The priesthood was a virgin, who was dismissed when marriageable. Seven of the cities near the island held a congress at it, and sacrificed jointly to the deity. Athens, Ægina, and Epidaurus were of this number, with Nauplia, for which place Argos contributed. The Macedonians, when they had reduced Greece, were afraid to violate the sanctuary, by forcing from it the fugitives, his suppliants. Antipater commanded his general to bring away the orators, who had offended him, alive; but Demophenes could not be prevailed on to surrender. His monument remained in the second century, within the inclosure of the temple. The city of Calauria has been long abandoned. Traces of buildings, and of ancient walls, appear nearly level with the ground; and some stones, in their places, each with a seat and back, forming a little circle, once perhaps a bath. The temple, which was of the Doric order, and not large, as may be inferred from the fragments, is reduced to an inconceivable heap of ruins. The island is now called Poro. It stretches along before the coast of the Morea in a lower ridge, and is separated from it by a canal only four stadia or half a mile wide. This, which is called Poro or the Ferry, in still weather may be passed on foot, as the water is not deep. It has given its name to the island; and also to the town, which consists of about 200 houses, mean and low, with flat roofs; rising on the slope of a bare disagreeable rock.