382 Genera of Humming Birds. 



and the wings shorter. That is the bird named P. oseryi by 

 Bourcier and Mulsant. This species was first collected by 

 d'Orbigny, but remained undescribed until 1852. Gould 

 described the species in 1841, from specimens collected by 

 Bridges, in Peru and Colombia. 



GenusCLIII. Ametrornis, Reich. ,Aufz.derCol., 1853, p. 14. 



Ametrornis, Muls., Hist. Nat. Ois. Mou., 1874, t. i., p. 85. 



Type : T. boiircieri, Lesson. 



Bill straight, acutely pointed, much longer than the head. 

 Wings long and pointed, reaching the tips of lateral rectrices. 

 Median rectrices wide at base, with elongated narrow tips, 

 wider and rounded at the end. Lateral rectrices wide, 

 gradually longer from the outermost to the last, and pointed 

 at tips. Nostrils exposed. Feet small. Sexes similar. 



Habitat. — Guiana, Peru and Bolivia. 



519. Ametrornis bourcieri. Less. Troch., 1832, p. 62. 



Ametrornis abnormis, Reich., Journ. fur Ornith., 1853^ 

 p. 14. 



Ortliornis bourcieri, Bon., Rev. and Mag. Zool., 1854, 

 p. 249. 



Pliaethornis whitelyi, Boucard, H. Bird, 1891, vol. i., p. 18, 



Bonrcier s Hermit, Gould, Mon. Troch., vol. i., p. 25. 



Le Phaethornis de Bourcier, Muls., Hist. Nat. Ois. Mou.^. 

 1874, vol. i., p. 86. 



Habitat. — Peru, Guiana. 



Male. — Upperside bronze-green, the feathers on the rump and 

 uppertail-coverts with a sub-terminal blackish bar, and edged 

 with rufous. Tail bronze-green at base, passing to black 

 upwards and tinged with bufT. The elongated tips of median 

 rectrices white. Throat pure white. Rest of underside grayish 

 buff. Wings purplish. Maxilla black. Mandible flesh colour,, 

 with black tip. Bill straight. 



Total length, 5fin. Wing, 2f. Tail, 2f. Culmen, if. 



Female. — Slightly paler underside. 



Having acquired some more specimens from British Guiana 

 since I described P. whitelyi in the Humming Bird, I have 



