Neohierax Kirke-Swann, Synopsis Accip., p. 184 (1022).
Type, Poliohierax-insignis Walden.
The name Poliohierax, which has generally been used for this little Hawk, was first applied to an African species, Falco semitor-quatus Smith, which, as Kirke-Swann has shown, is not congeneric with our Indian birds.
In this genus the bill is similar to that of Microhierax but comparatively smaller and with a single tooth the tarsus is naked and is covered with polygonal scales, large in front, small behind; the toes are weak and short; wing rounded, the second, third and fourth primaries sub-equal, the first equal to, or longer than, the fifth ; the tail is strongly graduated in Burmese species ; sexes not alike.
The genus is represented only in the Indo-Malayan region.
Specimens of this Hawk were received the same year by both Walden and Hume, the former publishing a description in April, the latter in May.