The Marmaray, connecting the European and Asian shores of Istanbul, is the world's first sea tunnel between two continents. Turkey has opened the world's first underwater rail link between two continents, connecting Asia and Europe and allowing Prime Minister Tayyip Erdogan to realise a project dreamt up by Ottoman sultans more than a century ago.
The labium forms the floor of the dragonfly's mouth, the labrum forms the top, while the hypopharynx is inside the mouth and is used in swallowing. Conceptually, then, the mosquito's proboscis is an adaptation of the mouthparts that occur in other insects. The labium still lies beneath the other mouthparts, but also enfolds them, and it has been extended into a proboscis.
Full Definition of PROBOSCIS. 1. a: the trunk of an elephant; also: any long flexible snout b: the human nose especially when prominent. 2. : any of various elongated or extensible tubular processes (as the sucking organ of a butterfly) of the oral region of an invertebrate.See proboscis defined for English-language learners. any of various elongated or extensible tubular organs or processes especially of the oral region of an invertebrate: as a: a sucking organ of insects (as houseflies or mosquitoes) that is often also adapted for piercing b: one of the complex protrusible holdfasts on the scolex of certain tapeworms.