4.12 BIRDS OF BRITISH GUIANA. 



with this bird in the sunny coast-woods, where it was found 

 generally hovering over the flowering Mucaceen. He did not 

 find its nest. 



Mr. J. J. Qudch observed this species in Georgetown, and 

 remarks (Timehri (2) v. p. 99) : — " The Mango Humming-bird 

 {Lampornis gramineus) is extremely common about the town." 



Genus CHRYSOLAMPIS Boie. 



CJirysolampis Boie, Isis, 1831, p. 546. Type C. elatus (Linn.). 



This genus is distinguished by having the bill feathered for 

 some distance from the base alons: the culmen and the nasal covers 

 completely obscured. 



Ch/ysolamjjis elatus. 

 Fig. 83. — To show the feathering along the culmen. 



280. Clirysolanipis elatus. 



RUBY-AND-TOPAZ HuilMING-BIRD. 



Trochilus elatus Linn. Syst. Xat. 12th ed. i. p. 102, 1766 (Cayenne). 

 Trochilus moschitiis Cab. in Schomb. Keis. Guian. iii. p. 705, 1848. 

 Chrysolampis moschitus Salvin, Ibi.s, 1885, p. 434 ; Quelch, Timehri (2) 



V. p. 90, 1891 (Georgetown) ; Salvin, Cat. 13. Brit. Mus. xvi, 



p. 113, 1892 (Georgetown, Demerani). 

 Ckrysolampis elatus Braboiu-ne & Chubb, B. S. Amer. i. p. 124, no. 1199, 



1912. 



Adult male. Crown of head and hind-neck bright ruby-colour ; 

 back, wings, and abdomen dark brown, somewhat paler on the 

 last, like the under wing-coverts ; tail chestnut with dark edges 

 to the tips of the feathers ; throat and fore-neck rich golden- 

 orange ; under tail-coverts chestnut ; a line on the sides of the 

 body and thighs white. 



Total length 93 mm., culmen 11, wing 55, tail 32. 



The description of the male is taken from an example collected 

 on the Abary River in September 190G. 



Adult female. Entirely different from the adult male in being 

 bronze-green above, dusky grey on the under snrface. and in 



