गासै जिबहारिफोरनि सरासनस्रा मोनसे आखुआ जादों बिसोरनि देहाफोरनि बिखुंनि जोबथायाव करनिकोलस बुंनाय मोननै नोलिफोर थानाय।
A characteristic common to all species is the presence of two tubes, called cornicles, on the back ends of their bodies.