RAMPHOTIIIGON, 153 



rounded, the second, third, fourth, and fifth primaries longest and 

 subequal, the first about equal to the seventh. The tail is square 

 at the tip and nearly equal to the wing in length. The tarsus 

 only slightly exceeds the length of the middle toe and claw, and 

 the hind toe and claw are about equal in length to that of the 

 exposed culmen. Coloration : male and female similar. 



449. Rampliotrigon ruflcauda. 



Rufous-tailed Flat-bill. 



PlatyrhyncJius rufieauda Spix, Av. Bras. ii. p. 9, pi. xi. fig. 1, 1825 (in 



sylvis fl. Amazonum). 

 JSlaenea spadicea Cab. in Schomb. Reis. Guian. iii. p. 702, 1848. 

 B,hynchocyclus riificauda Salvin, Ibis, 1885, p. 296 (Bartica Grove, 



Camacusa, Merume Mts.) ; Selater, Cat. B. Brit. Mus. xiv.- p. 172, 



1888 (Carimang River). 

 Bamphotrigon rufieauda Brabourne & Chubb, B. S. Amer. i. p. 272, 



no. 2771, 1912. 



Adult male. Head, sides of face, sides of neck, hind-neck, back, 

 scapulars, and lesser upper wing-coverts dark olive-green ; 

 bastard-wing and primary-coverts dark brown ; median and 

 greater upper wing-coverts, primary and secondary quills brown 

 broadly margined with rufous, more narrowly on the quills, 

 which are edged with cinnamon on the inner webs; upper tail- 

 coverts and tail pale rufous with black shafts to the tail-feathers ; 

 lores whitish at the base of the feathers ; eyelid pale yellow ; 

 throat, sides of body, and abdomen dusky olive-green intermixed 

 with yellow which is more pronounced on the abdomen ; under 

 tiiil-coverts and under wing-coverts cinnamon ; axillaries straw- 

 yellow ; under surface of quills brown with pale rufous edges ; 

 lower aspect of tail pale rufous including the shafts. *' Bill 

 plumbeous, base of lower mandible whitish ; feet pale brown " 

 ((^at. B. Brit. Mus.). 



Total length 152 mm., exposed culmen 14, wing 77, tail 69, 

 tarsus 1(5. 



The male described was collected on the Abary River in 

 September 1906. 



Adult female. Similar to the adult male but rather smaller. 

 Wing 73 mm. 



Breeding-season. Unknown in British Guiana. 



JVest. Unrecorded in British Guiana. 



J^ffffs. Undescribed from British Guiana, 



