or Locri Epizephyrii, in Ancient Geogra- phy, a town on the Ionian sea near the promontory Zephyrium. The people are said to be the first who used a code of written laws, compiled by Zaleucus from the laws of the Cretans and others.

a country of Achaia in Greece; twofold, and divided by Mount Parnassus. The Hither was oc- cupied by the Locri Ozolae, called also Zephyrii, or Western, contained between Aetolia and Phocis. The Farther Locris lay beyond Parnassus, running out to- wards Thermopylae, and reaching to the Euripus of Euboea; occupied by the Locri Opuntii, and Epicnem- idi, who were called the Eastern Locri.

LOCUS GEOMETRICUS, denotes a line by which a local or indeterminate problem is solved.

A locus is a line, any point of which may equally solve an indeterminate problem. Thus if a right line suffice for the construction of the equation, it is called locus ad rectum; if a circle, locus ad circulum; if a pa- rabola, locus ad parabolam; if an ellipse, locus ad elip- sin: and so of the rest of the conic sections.