In some cultures, butterflies symbolise rebirth. In the English county of Devon, people once hurried to kill the first butterfly of the year, to avoid a year of bad luck. In the Philippines, a lingering black butterfly or moth in the house is taken to mean a death in the family. An Ancient Greek myth tells of the cithara player Eunomos ("Mr Goodtune"). During a competition, the highest string on his five-string cithara broke. At that moment, a cicada landed on the musical instrument and sang in the place of the missing string: together, they won the competition. An Australian aboriginal tale tells how a man builds a shelter for his sick son; when he returns with food, his son has vanished, but up in a tree is a cocoon around a pupa. Symbols, amulets and omens Insects have often been taken to represent qualities, for good or ill, and accordingly have been used as amulets to ward off evil, or as omens that predict forthcoming events. A blue-glazed faience dragonfly amulet was found by Flinders Petrie at Lahun, from the Late Middle Kingdom of ancient Egypt. During the Greek Archaic Era, the grasshopper was the symbol of the polis of Athens, possibly because they were among the most common insects on the dry plains of Attica. Native Athenians wore golden grasshopper brooches to symbolize that they were of pure, Athenian lineage and did not have any foreign ancestors. In later times, this custom became seen as a mark of archaism. For some Native American tribes, dragonflies represent swiftness and activity; for the Navajo, they symbolize pure water. They are a common motif in Zuni pottery; stylized as a double-barred cross, they appear in Hopi rock art and on Pueblo necklaces. Among the classical names of Japan are Akitsukuni (秋津国), Akitsushima (秋津島), Toyo-akitsushima (豊秋津島). Akitu or akidu are archaic or dialectal Japanese words for dragonfly, so one interpretation of Akitsushima is "Dragonfly Island". This is attributed to a legend in which Japan's mythical founder, Emperor Jinmu, was bitten by a mosquito, which was then eaten by a dragonfly. As a seasonal symbol in Japan, the dragonfly is associated with autumn, and more generally dragonflies are symbols of courage, strength, and happiness, and they often appear in Japanese art and literature, especially haiku. In Europe, dragonflies have often been seen as sinister. Some English vernacular names, such as "horse-stinger", "devil's darning