1 INTRODUCTION. 



between members of the same species. Eugenes fulg ens attacks with equal ferocity Amazilia dumerilii, and, animated 

 by no high-souled generosity, scruples not to tilt with the httle TrocUlus coluhris. I know of hardly any species 

 that shows itself more brilliantly than this when on the wing ; yet it is not to the midday sun that it exhibits its 

 splendour. When the southerly wind brings clouds and driving mist between the volcanos of Agua and Fuego, and 

 all is as in a November fog in England, except that the yellow element is wanting, then it is that Eugenes fulg ens 

 appears in numbers ; Amazilia Devillei, instead of a few scattered birds, is to be seen in every tree, and TrocUlus 

 coluhris in great abundance : such animation awakes in Humming- Bird life as would hardly be credited by one who 

 had passed the same spot an hour or two before ; and the flying to and fro, the humming of wings, the momentary 

 and prolonged contests, and the incessant battle-cries seem almost enough for a time to turn the head of a lover of 

 these things. I have fifteen males from Duenas to one female." — Ibis, vol. ii. p. 261. 



Following the Eugenes fulgens is the softly-coloured Delattria Clemencice of my work, the proper name of which 

 is Cceligena Clemencice, it being the type of the 



Genus Cgeligena, Less. 



69. Cceligena Clemenci^, Less. 



Delattria Clemencise Vol. II. PI. 60. 



Campylopterus Clemencice, Jard. Nat. Lib. Humming-Birds, vol. ii. p. 154. 

 Trochilus lucidus, Licht. in Mus. of Berlin. 



Coeligena Clemenciae, Reichenb. Troch. Enum. p. 3, pi. 687. fig. 4516 ; Cab. et Hein. Mus. Hein. Theil iii. p. 15, 

 Habitat. Mexico, where it is far from common. 



The 



Genus Lamprol/ema, Reiche?ib. 



was instituted for the truly beautiful bird known as De Rham's Garnet. 



70. Lamprol^ma Rhami ............ Vol. II. PL 61. 



Trochilus fulgidus, Licht. in Mus. of Berlin. 



Lamprolaema Rhami, Cab. et Hein. Mus. Hein. Theil iii. p. 30. 



Habitat. Guatemala. 



We now come to the 



Genus Delattria, Bonap. 

 as restricted to the D. Henrici and D. viridipallens, both of which species are natives of Guatemala 



71. Delattria Henrici . . . . Vol. II. PI. 62. 



Lamprolaima Henrici, Reichenb. Aufz. der Col. p. 9. 



Heliodowa Henrici, Reichenb. Troch. Enum. p. 6, pi. 742. figs. 4701-3. 



Habitat. — Guatemala. 



72. Delattria viridipallens ............ Vol. II. PL 63. 



Habitat. Guatemala. 



" Occurs, in company with Petasophora thalassina, on the Volcan de Fuego. Seems to keep entirely to the 

 forests of the volcano. I have never met with it in the plains below. This is one of the commonest species 

 at Cohan. It may readily be recognized by the peculiar harshness of its note.'* — Salvin in 'Ibis,' vol. ii. 

 pp. 40, 263. 



Near to these are the members of the 



Genus Heliop/edica, Gould. 



(HAfor, sol, et TraidtKos, juvenilis.) 

 Generic characters. 

 Male.— Bill straight, and rather longer than the head ; head round, or with the feathers not advancing on the 



