4:10 BIRDS OF BRlTI^iH GUIANA. 



Keij to the Species. 



A. Throat black, skirted on tlic skies with 



blue A. riol/'i auda, p. 410 



B. Throat and sides of the neck rich glittering 



green A. ririJiyula, \k 411. 



278. Anthracotliorax violicauda. 



Violet-tailed MAyco. 



Trochilus violicancht Bodd. Tabl. PI. Enl. p. 41. 1783 (Cayenne). 

 Trochilns nigricoUis Yieill. X. Diet. d"Hist. Nat. vii. p. 349, 1817 



(Brazil). 

 Trochilns mango (nee Linn.), Cab. in Schomb. Reis. (juian. iii. p. 706, 



1848. 

 Lawpornis vioUcaitda Salvin, Ibis, 188o, p. 432 (Roraima) ; Quelch, 



Timehri (2) v. p. 99, 1891 (Georgetown) ; Salvin, Cat. B. Brit. 



Mus. xvi. p. 92, 1892. 

 Lampornis niqricoUis Brabourne & Chubb, B. S. Amer. i. p. 123, 



no. 1194, 1912. 



''Mango Humming-bird'' (Quelc/i). 



Adult male. Head, back, ii])per wing-coverts, and upper tail- 

 coverts, as well as the middle tail-feathers, bronze-green ; the 

 outer tail-feathers purple margined with black ; flight-quills 

 brown ; throat, breast, and middle of abdomen black, the black 

 on the throat skirted on each side with steel-blue ; sides oE 

 body and under wing-coverts green ; under tail-coverts sooty- 

 black with green edges ; a white line on side of body. 



Total length 115 mm., culmen 24, wing 67, tail 39. 



We do not know tlie exact locality, in the Colony, of the male 

 from which the description is taken. 



Adult female. Differs from the adult male in being white on 

 the under surface, with a line of black running down the centre, 

 and having white tips to the outer tail-feathers, 



Sreeding-season. Unknown in British Guiana. 



JS^est. Unrecorded in British Cluiana. 



Eggs. Undescribed from British (jruiana. 



Range in British Guiana. Abary River (^fcConneU collection); 

 Mount Roraimn, 3500 ft., Annai {\\hitelg), 



Extralimital Range. Cayenne (Bodda^rt) ; Northern Brazil, 

 Colombia. 



Hahits. According to Schomburgk (Reis. Guian. iii. p. 70G) 

 this bird is especially numerous near tlie coast, where it appears in 



