a name taken for that part of Greece which Ptolemy calls Hellas, the younger Pliny Graecia; afterwards called Livadia, now Hellas Proper.

ACHÆA PROPRIA, anciently a small district in the north of Peloponnesus, running 65 miles along the bay of Corinth, and bounded on the west by the Ionian Sea, on the south by Elis and Arcadia, and on the east by Sicyonia. Its in- habitants were the Achaeans, properly so called; its metropolis Patrae. It now forms part of the kingdom of Greece.

Achaea also denoted all those countries that joined in the Achaean league, reduced by the Romans to a province. Likewise the Peloponnesus.

Achilles Presbyteri, or the Presbyters of Achaea, were those who were present at the martyrdom of St Andrew the apostle, A.D. 59; and are said to have written an epistle in relation to it. Bellarmin, and several other eminent writers in the church of Rome, allow it to be genuine; while Du Pin and some others expressly reject it.