430 BIRDS OF BRITISH GUIANA. 



Key to the Species. 



A. Abdomen red, not orange or yellow. 



a. Larger, wing more than 130 mm. ; tail 

 uniform, neither tipped nor baiTed 



with white T. melan unis, S , P- 430. 



a. Head, back, and breast gi-ey T. melanuvus, 2 , p. 430. 



h. Smaller, wing less than 130 mm. ; fciil 

 particoloured, lateral feathers narrowly 



barred and broadly tipped with white . T. personatus, J , }). 431. 

 h'. Head, back, and breast cinnamon- 

 brown T. personatus, $ , p. 431. 



B. Abdomen orange or yellow, not red. 



c. Larger, wing more than 130 mm. 



c . Abdomen and under tail - coverts 



yellow, outer tail-feathers obliquely 



tipped with white T. viridls, S , p. 432. 



d'. Outer tail-feathers ban-ed on the outer 



webs and tipped with white T. viridis, $ , p. 432. 



d. Smaller, wing less than 130 mm. 



e. Head and breast bright green T. rufus, S ■, P- 433. 



<?". Head and breast cinnamon-brown . T. riifiis, $ , p. 433. 



/". Head and breast dark blue T. viohiceus, (5 , P- 434. 



/'". Head and breast slate-grey T. violaceus, $, p. 431. 



291. Trog-on melanurus. 



Black-tailed Trogon. 



Trofjon melanurus Swains. Anim. in Menag. p. 329, 1837 (Guiana) ; 

 Cab. in Sehomb. lleis. GruLan. iii. p. 718, 1848 ; Salvin, Ibis, 1886, 

 p. 61 (Bartica Grove, Camacusa, Atapurau Kiver) ; Ogilvie-Grant, 

 Cat. B. Brit. Mus. xvii. p. 472, 1892 (Demerara River) ; Brabourne 

 & Chubb, B. S. Amer. i. p. 150, no. 1470, 1912. 



Adult male. Head, entire back, and breast bluish green ; lesser 

 n[)[)er wing-coverts like tlie back ; median and greater upper 

 wing-coverts minutely speckled with black and white ; bastard- 

 wing, primary-coverts, and quills black with white edgings to some 

 of the primaries ; tail bluish green with blackish inner webs to 

 the outer feathers, the outermost feather on each side has pale 

 niottlings on the outer web ; forehead, sides of face, and throat 

 black ; abdomen and under tail-coverts bright red ; an irregular 

 white baud across the breast dividing the green from the red ; 

 thighs and under wing-coverts blackish with pale edges to the 

 latter. 



Total length 275 mm., culmen 22, wing 161, tail 14G, tarsus 15. 



The description of the male is based on an exan)ple collected on 

 the Mazaruui River. 



