511. Graucalus dobsoni.
Graucalus dobsoni, Ball, J. A. S. B. xli, pt. ii, p. 281 (1872); id. S. F. i, p. 66; Wald. Ibis, 1873, p. 312; Hume, S. F. ii, p. 206; id. Cat. no. 270 ter. Artamides dobsoni (Ball), Sharpe, Cat. B. M. iv, p. 20.
Coloration. Male. Lores, about the nostrils, and a broad band through the eye to the ear-coverts black; the whole upper plumage and lesser wing-coverts iron-grey ; median and greater coverts and quills very dark brown or black, very narrowly edged with pale grey ; tail black, the outer feathers narrowly tipped white; cheeks, chin, throat, and breast pale iron-grey; remainder of the lower plumage, with the under wing-coverts and axillaries, white, narrowly but distinctly barred with blackish brown.
Female. Resembles the male, but has the chin, throat, and breast barred like the remainder of the lower plumage.
The young have the upper plumage rufous barred with dark brown, and the lower plumage whitish, barred on the throat, breast, under tail-coverts, and axillaries with blackish. The young, however, vary extremely, and no description will cover all the changes they undergo from the nestling stage to the adult.
Bill, legs, and feet black; iris crimson-lake, tinged with brown in the young (Hume).
Length about 12; tail 5.5; wing 6.2; tarsus .95; bill from gape 1.25.
Distribution. The Andaman Islands.
Other species of Graucalus are G. rex-pineti from China, with the under wing-coverts buff-coloured; and G. sumatrensis from Sumatra and the Malay peninsula, smaller than 67. macii, with an extremely large bill, and no black on the face of the male.