CHALYBURA ISAUR.E 



Madame de Lafresnaye^s Plumeleteer. 



Hypuroptila isaurm, Gould, Proc. ZooL Soc. 1861, p. 199. 



Chalyhura isaurie, Salvin, Proc. Zool. Soc. 1867, pp. 131, 152. — Gould, Intr. Trochil. 8vo, 



p. 72 (1861).— Scl. & Salv. Nomencl. Av. Neotr. p. 82 (1873). 

 Lampornis isaurce, Mulsant, Hist. Nat. Oiseaux-Mouches, i. p. 174 (1874). 



This Humming-bird was described by Mr. Gould from Veraguan specimens. It is a very distinct species, 

 and is distinguished from C. urochrysea of Panama by the bronze-coloured tail with a purplish lustre on the 

 outer rectrices. C melanorrhoa^ which is also nearly allied to C. kaurcB^ may be recognized by its black 

 crissum. 



The following is the original description of the male : — 



" Head, all the upper surface, wing-coverts, flanks, and abdomen coppery-bronze, inclining to purple on 

 the lower part of the back and upper tail-coverts ; wings purplish brown ; tail very dark bronze, inclining to 

 purple ; throat and breast grass-green ; under tail-coverts white ; upper mandible black ; under mandible 

 fleshy, with a black tip ; tarsi yellow or flesh-colour. 



"Total length 41 inches, bill Iro, wing 2f, tail If, tarsi i" 



Mr. Salvin has described the female as follows : — 



" Above greenish, with the head duller; the rump and the tail glossed with bronze ; wings dusky; under 



surface of body dull ashy, the vent white ; the two outer tail-feathers on each side tipped with white ; upper 



mandible dusky, the lower one dusky yellow at the tip ; feet yellow." 



[R. B. S.] 



