2go Genera of Humming Birds. 



shading into black and edged with white. Bill black, except 

 base of mandible, which is flesh-colour. 



Total length, 4Jin. Wing, 2 J. Tail, \j^. Culmen, i. 



I am of opinion that the bird described by Gould as 

 Aphantocliroa hyposticta , finds its proper place here. 



407. Xanthogenix ALEXANDRI, Boucard, H. Bird, 1891, 



vol. i., p. 18. 



Aphiintochroa alexandri, Boucard, H. Bird, vol. i., p. 18. 



Alexajider's Humming Bird. 



la Xanthogenye d'Alexandre. 



Habitat. — Demerara, " British Guiana." 



Female, or Young Male. — Forehead metallic golden-green. 

 Upperside shining golden-green. Uppertail-coyerts shining 

 green. Median rectrices dark bronze-green. Laterals bronzy 

 at base passing to brownish-black with a small buffy-white 

 spot on tips of the two outermost ones. Underside brilliant 

 metallic golden-green with a line of pale buffy-white in the 

 centre of the abdomen. Undertail-coverts dark green, edged 

 with rufous. Wings very narrow, pur]:)lish-brovvn. Maxilla 

 black. Mandible flesh colour with black tip. 



Total length, 4in. Wing, 2\. Tail, i\. Culmen, |. 



Type unique in my collection. 



It was collected at Demerara, by Mr. Alexander, from whom 

 I purchased it in 1878. 



Since I described this species in 1891, I have sent my 

 typical specimen to Count Berlepsch, who, after a careful 

 examination, identified it as XANTHOGENIX SALVINI. As to 

 the genus I quite agree with him, but not as to the species. 

 My opinion is that it is a species quite distinct from X. salvini, 

 and that it is better to leave it so for the present. 



Genus CXVII. lolaema, Gould, Int. Troch., 1861, p. 73. 



lONOLAlMA, Reich., Aufz. der Colib, 1853, p. 9. 



lONOLOEMA, Gould, Mon. Troch., 1857, P^- xiii. 



Type : T. schreibersi, Bourcier. 



Bill stout, straight, longer than the head, nostrils hidden by 

 frontal feathers. Wings long, reaching the tips of third lateral 



