. PTEEOCLID^ PTEROCLES 189 



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 645. Pterocles bicinctus. Double-landed Sandgrouse. __ 



Pterocles bicinctus, Temm. Pig. ct Gal iii, pp. 247, 713 (1823) ; Strick- 

 land and Sclater, Contr. Orn. 1852, p. 157 ; Layard B. S. Afr. p. 

 278 (1867); Ay res, Ibis, 1869, p. 298, 1871, p. 269, 1886, p. 292; 

 Gurney, in AnderssorisB. Damaraland, p. 241 (1872) ; Buckley, Ibis, 

 1874, p. 385 ; Elliot, P. Z. S. 1878, p. 255 ; Oates, Matabeleland, p. 

 323 (1881) ; Sharpe, ed. Layard 's B. S. Afr. pp. 575, 854 (1884) ; 

 Nicolls and Eglington, Sportsm. S. A. p. Ill (1892) ; Bryden, Gun and 

 Camera, pp. 285, 476 (1893) ; Grant, Cat. B. M. xxii, p. 30 (1893) ; 

 id. Game Birds, i, p. 21 (1896)'; Fleck, Journ. Ornith. 1894, pp. 358, 

 384; Shelley, B. Afr. i, p. 184 (1896); Alexander, Ibis, ' 1900, 

 p. 449 : Beichenow, Vog. Afr. i, p. 309 (1900). 



Description. Male. Forehead and a transverse band across the 

 crown, white, between which is a wider black band; crown of the 

 head pale reddish-brown streaked with black, nape of the neck, 

 sides of the face, chin, breast and fore half of the wings olive ; rest 

 of the upper surface black mottled and barred with pale chestnut, 



FIG. 60. Head of Pterocles bicinctus, <? . x f i 



many of the feathers tipped with white ; primaries, primary covert 

 and secondaries black, slightly tipped with white ; below, the olive 

 breast is bounded by a narrow white, followed by a narrow 

 black, transverse band; rest of the lower surface narrowly trans- 

 versely banded with black and white ; feathers on the tarsus 

 greyish ; under tail-coverts pale chestnut with a few bars of 

 black. 



Iris hazel, skin round the eye chrome yellow ; bill yellowish- 

 brown ; legs yellowish. 



Length about 9*0 ; wing 6*75 ; tail 3-0 ; culmen -7 ; tarsus T05.. 



The female has the whole of the upper parts including the head 

 and neck as well as the breast, like the back of the male, black, 

 mottled and barred with pale chestnut, and often tipped wich white ; 



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