ROME—Archaeologists in southern Italy have discovered ancient warrior helmets and the ruins of a painted brick wall at a site that might have been a forerunner of a temple dedicated to the goddess Athena, officials said Tuesday. Italian Culture Minister Dario Franceschini said the remains dug up at the popular tourist site of Velia were found on what had been an acropolis of one of Magna Graecia’s most important cities. Velia is 40 kilometers (25 miles) southeast of Paestum, a much-visited site of ancient Greek temples. The recently completed excavation at Velia unearthed a pair of helmets in good condition, the remains of a building, vases with the Greek inscription for “sacred” and metal fragments of what possibly were weapons, the culture ministry said. State Museums Director Massimo Osanna, who formerly had long directed excavations at Pompeii, Italy’s most celebrated excavated site, said the area explored at Velia probably contained …