GENEBA AND SPECIES. 201 



Trochilus (Cynanthus) Gouldi, Loddiges in 

 Proceeds. Zool. Soc. 1840. General colour 

 green ; the throat of a pale smaragdine hue ; the 

 tail very long and deeply forked, the outer fea- 

 thers measuring 4| inches ; their colour is black, 

 golden-green at the tips ; the central ones are 

 short ; from these the rest graduate, and are of 

 a splendid golden-green ; wings moderate ; bill 

 small and straight. 



" The most remarkable feature in this elegant 

 little bird is its long and luminous green tail, in 

 the form of which, and in the arrangement of 

 the feathers it approaches the Fire-tailed Hum- 

 ming-bird (TV. sparganurus, Shaw), and likewise 

 the Nouna Koali (TV. Nuna) of M. Lesson's 

 Supplement, pi. 35." Loddiges. 



Locality: Santa Ee de Bogota. In Gould's 

 cabinet. 



Trochilus (Cynanthus) Mocoa, Bourcier, (Les- 

 bia smaragdinus, Gould in Proc. Zool. Soc. 

 1846.) 



Crown of the head luminous green ; throat 

 *hining steel-blue ; body green ; the under sur- 

 face with a metallic tinge ; tail very long and 

 forked, metallic-green, highly luminous ; has a 

 portion of both webs of the outer feathers, and 

 the inner webs of the remainder black : wings 

 brown ; bill, black ; allied to Ornismya Kingii, 

 Lesson. 



Total length, 7 inches ; bill, f ; tail, 5. In 

 Gould's cabinet. 



Trochilus (Cync ithus) gracilis, Gould, in 



