Sypheotides Lesson, Revue Zool., 1839, p. 47.
Type, Otis aurita Lath.= Otis indica Miller.
In this genus and the next the tarsus is longer in comparison than in any other Indian Bustards, being equal to about one-third" the length of the wing; the primaries are very attenuated and are notched on the inner web of the two species retained by Blanford under the genus, one, S. indica, has a seasonal change of plumage but the second, S. bengalensis, has none, a difference which supports Sharpe's action in placing the latter in a separate genus, Houbaropsis, which is accepted in the present edition.
In the genus Sypheotides the male has the feathers of the side of the head and chin long and lanceolate, whilst from each side of the head from below the ear-coverts there is a tuft of feathers with narrow webs and broadened spatulate ends. The one species in the genus is confined to India.