Descriptions of Seven New Species of Humming-Birds. 263 



metallic crown, absence of white on the lateral tail-feathers, 

 and dull colored abdomen. 



Ioiiolaima frontalis. 



The Emerald-Fronted Humming-Bird. 



On the forehead, immediately adjoining the bill, is a diamond 

 shaped spot of brilliant metallic green ; upper plumage and wing- 

 coverts dark green, grass green on the head, but with a golden 

 shade on the back ; upper tail-coverts dark green ; tail deep 

 steel-blue, extreme tips of the two central feathers green ; wings 

 purplish brown, outer edge of first primary chestnut ; chin, 

 cheeks, and upper part of throat black ; ear-coverts bronzed 

 green ; on the throat is a gorget (rather circular in form) of 

 shining violet purple ; adjoining this and occupying the upper 

 part of the breast, is a band of metallic green of the same shade 

 as the frontal spot ; sides dark green, similar in color to the 

 back ; lower part of the breast and abdomen of the same deep 

 black as the throat ; under tail-coverts steel-blue ; bill black ; 

 feet brownish black. 



In one specimen, not fully mature, the frontal spot is want- 

 ing, and the bright feathers on the throat are only partially 

 developed ; there is a line of bright rufous feathers running from 

 the bill under the eye, in all other respects precisely like the 

 adult. 



Length 5| inches ; wing 3 ; bill § ; tail 2f . 

 Habitat. — Ecuador. 



Hemarks. — This makes the second species of this genus, and 

 is even a handsomer bird than Schreibersi, which it much 

 resembles; it is, however, larger, and differs in having an 

 emerald spot on the forehead ; in the adult being destitute of a 

 buff line on the sides of the head ; in having the centre of the 

 abdomen black, and the tail more deeply forked, the outer 



FEBRUARY, 1S58- ^q Akn , Lyc# Nat Hist Tol yl 



