GENIE A AND SPECIES. 199 



Locality : Cordilleras, Peru and Columbia. 



Of this genus fourteen or sixteen species are 

 now recorded. 



The following brief but characteristic descrip- 

 tions are taken from specimens in Mr. Gould's 

 cabinet. 



Trochilus (Eriopus) Derbyi, Bourcier, 1846. 

 "Upper and under surface bronzy-green; tail 

 short and black, with pointed outer feathers ; 

 upper and under tail-coverts resplendent green. 



Locality : Popayan. 



Trochilus (Eriopus) Aurelice, Bourcier, 1846. 

 Tail more ample than in E. Derbyi ; general 

 plumage, dull metallic-green : feet-muffs, white 

 before, tawny buff behind. 



Locality : Bogota. 



Trochilus (Eriopus) vestitits,(Ornismya vestita, 

 Longuem.) Eoot-muffs, ample and white ; 

 general plumage above, metallic-green ; gorget 

 metallic-plum colour; under parts, dusky, 

 passing into intense green; tail short, but 

 broader than in E. Derbyi. 



Eemale with indications of gorget. 



Locality : Santa Ee de Bogota. 



Trochilus (Eriopus) cupreiventris, Eraser, 1840. 

 Plate XIII. Eoot-muffs, white ; gorget green, 

 passing on the abdomen into rich bronzy-copper ; 

 tail, short and forked, black ; under tail-coverts 

 steely-violet blue ; upper parts golden-green, 

 passing into a purer green on the upper tail- 

 coverts. 



