(355) Pteruthius aeralatus aeralatus.
Pteruthius aeralatus Tickell, J. A. S. B., xxiv, p. 267 (1855) (Tenasserim. 3,500-4,500 ft.); Blanf. & Oates, i, p. 225.
Vernacular names. None recorded.
Description.— Male. Differs from the last in having the inner secondaries golden yellow on the outer webs and edged with black on the inner webs and tipped with black. The lower plumage is also more grey.
Colours of soft parts. " Legs and feet fleshy white ; claws pale brown to black; lower mandible and basal edges of upper mandible along commissure pale blue, rest of the bill black; iris varied considerably, slaty grey, pale greenish grey and deep brown " (Hume &Davison).
Measurements a little smaller than the last; wing 75 to 81 mm. The female differs in having the inner secondaries green, tipped with chestnut and the back grey.
Distribution. The Kachin Hills, East of Bhamo, the hills of Central East Burma, Muleyit and probably other ranges in Tenasserim and the North of the Malay Peninsula.
Habits. On Muleyit, Davison found this bird in pairs or singly, frequenting the tops of the highest trees, hunting the smaller branches and foliage for insects. Its note he syllabizes as " too weech." He also says that if one of a pair is shot, the other at once commences calling and hunting for its companion. This trait is also seen in the last bird.
Probably all the forms of aeralatus should be treated as geographical races of erythropterus, but in the series available for examination I have seen no intermediate forms.