"A family of scaled Polychaete worms known as the \"scale worms\". Short and flat, specimens reach as much as 20 cm in length and 10 cm width (Eulagisca gigantea). An almost-constant number of small segments is the norm. They are covered by scales, technically termed elytra.They are active hunters, but generally dwell in protected environments such as under stones."@en . . . . . . .