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Greek derivatives ending in ais, eis, ois, aon, ion, the
compounds of hzbc, proper names in ea, ia, eum, and
adjectives in eus formed from proper names, generally
lengthen the penultimate; but genitives in eos, and accu-
satives in ea from           in eus, generally make the
penultimate short; as Nais, Minois, Ixion, Archelaus,
Apamea, Antiochia, Mausoleum, Pelopeus, Orpheos, Or>>
phea.