350 BIRDS OF BRITISH GUIANA. 



564. Stelgldopteryx sequalis. 



Bangs's Eough-winged Swallow. 



Stelgidopteryx uropygialis (neo Lawr.) Sharpe, Cat. B. Brit. Mus. xi. 

 p. 209, 1885 (Eovaima). 



Stelgidopteryx rufieollis (nee Vieill.) Salvin, Ibis, 1885, p. 206 

 (Roi-aima, 3500 ft.) ; Quelch, Timehri (2) v. p. 277, 1891 (George- 

 town) ; Beebe, Our Search for a Wilderness, pp. 379, 393, 1910 

 (Abary Savannas). 



Stelgidopteryx oequalis Bangs, Proc. New Engl. Zool. Club, ii. p. 58, 1901 

 (Santa Mai-ta) ; Brabourne & Chubb, B. S. Amer. i. p. 328, 

 no. 3358, 1912. 



Adult female. Entire back, scapulars, tipper wing-coverts, and 

 upper tail-coverts smoke-brown, with whitish edgings to the upper 

 tail-coverts ; bastard-wing, primary-coverts, and flight-quills 

 blackish, paler on the inner magins of the last ; innermost 

 secondaries and inner greater-coverts edged with white at the 

 tips ; tail dark smoke-brown, the feathers very narrowly edged with 

 whitish ; crown o£ head, hind-neck, sides of face, throat, and 

 breast pale chestnut, the feathers on the middle of the crown 

 have dark brown bases which impart a more or less scalloped 

 appearance ; lower breast and sides of body smoke-brown tinged 

 with chestnut ; abdomen and under tail-coverts white ; thighs 

 dusky-brown ; axillaries and inner under wing-coverts pale smoke- 

 brown; outer, or marginal-coverts chestnut intermixed with 

 white and dark brown ; under surface of flight-quills and lower 

 aspect of tail pale brown, with white shafts to the feathers. 



Total length 109 mm., exposed culmen 7, wing 100, tail 44, tarsus 9. 



The specimen described was collected by Mr. McConnell at 

 Mount Roraima, October 1698. 



Adult male. Similar to the adult female but rather ' larger. 

 Wing 108 mm. 



An immature bird collected in the- Upper Takutu Mountains in 

 ] 908, differs from the adult in having the crown of the head and 

 nape soot-black, the feathers on the back and wings margined with 

 chestnut, the breast darker and less chestnut, abdomen and under 

 tail-coverts cream-white, and the thighs pure white. 



Breeding-season. Unknown in British Guiana. 



Nest. Unrecorded in British Guiana. 



Eggs. Undescribed from British Guiana. 



Range in British Guiana. Mount Roraima, Upper Takutu 

 Mountains (McConnell collection) : Mount Roraima (Whiteli/). 



Extralimital Range. Venezuela, Trinidad, Colombia. 



