 Besawunena, attested only from a word list collected by Kroeber, differs only slightly from Arapaho, but a few of its sound changes resemble those seen in Gros Ventre.It had speakers among the Northern Arapaho as recently as the late 1920s.Nawathinehena is also attested only from a word list collected by Kroeber, and was the most divergent language of the group.