CHIROMAOH^EIS. 261 



520. OMromacliseris manacus. 



White-bbeasted Manakin. 



Pipra manacus Linn. Syst. Nat. i. p. 340, 1766 (Cayenne) ; Cab. in Schomb. 

 Eeis. Guian. iii, p. 696, 1848 ; Salvin, Ibis, 1885, p. 301 (Bartica 

 Grove, Camacusa) ; Sclater, Cat. B. Brit. Mus. xiv. p. 318 (Bartica 

 Grove, Canaaeusa) ; Brabourne & Chubb, B. S. Amer. i. p. 310, 

 no. 3171, 1912. 



Manacus manacus manacus Beebe, Our Search for a Wilderness, p. 392, 

 1910. 



Adult male. Forehead, lores, and crown of head blue-black like 

 the upper back, scapulars, wings, and tail ; outer primaries brown 

 with pale edges on the inner webs which become white on the 

 secondary-quills ; lower back, rump, and upper tail-coverts dark 

 lavender-grey; lesser marginal upper wing-coverts, ear-coverts, 

 hinder face, and hind-neck white, the feathers minutely marked 

 with dark brown or blackish ; throat and sides of neck, upper 

 breast, sides of body, axillaries, and inner under wing-coverts 

 white; lower breast, abdomen, lower flanks, and under tail- 

 coverts lead-grey ; the outer or marginal under wing-coverts 

 blackish ; under surface of flight-quills pale brown on the apical 

 portion, white at the base ; lower aspect of tail dark brown. 



Total length 105 mm., exposed culmen 11, wing 50, tail 31, 

 tarsus 21. 



The description of the male is based on a specimen collected on 

 the Abary River in July 1906. 



Adult female. Entire upper surface grass-green ; inner webs 

 of fligbt-quills brown with pale margins ; under surface of body 

 yellowish green ; throat more or less tinged with .grey ; axillaries 

 and under wing-coverts pale grey, inclining to whitish on the 

 inner edges of the flight-quills. Wing 53 mm. 



The specimen described was collected on the Supenaam River. 



The young male in its first plumage is like the female. The 

 first appearance of the ^male dress may be seen on the throat and 

 sides of the face and the black on the crown of the head. 



Breeding-season. Unknown in British Gruiana. 



Nest. According to Schomburgk, the nest is similar to that of 

 Chiroxiphia pareola (q. v.), p. 256. 



Eggs. Undescribed from British Guiana. 



Range in British Guiana. Ituribisi River, Supenaam River, 

 Bartica, Kamakabra River, Abary River, Arwye Creek, Great 



