Maskoy
Maskoy, or the Lengua-Mascoy family, is a group of closely related tongues of the Paraguayan Gran Chaco, whose members include Enlhet and Enxet, once counted as the northern and southern dialects of one Lengua language, plus Guana, Sanapana, Angaite and Toba-Maskoy. They were spoken by forest hunter-gatherers and scarcely written down before the late nineteenth century.