CHALYBURA I[SAUR.

Madame de Lafresnaye’s Plumeleteer.

Hypuroptila isaure, Gould, Proce. Zool. Soc. 1861, p. 199.

Chalybura isaure, Salvin, Proe. Zool. Soc. 1867, pp. 131, 152.—Gould, Intr. Trochil. 8vo,
p. 72 (1861).—Scel. & Salv. Nomencel. Av. Neotr. p. 82 (18738).

Lampornis isaure, Mulsant, Hist. Nat. Oiseaux-Mouches, 1. p. 174 (1874).

 

Tuis Humming-bird was described by Mr. Gould from Veraguan specimens. It is a very distinct species,
and is distinguished from C. wrochrysea of Panama by the bronze-coloured tail with a purplish lustre on the
outer rectrices. C. melanorrhoa, which is also nearly allied to C. isaure@, 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 5 under tail-coverts white; upper mandible black ; under mandible
fleshy, with a black tip; tarsi yellow or flesh-colour.

«Total Jength 4% inches, bill 1s, wing 28, tail 12, tarsi ae

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.”
(Dee Senos]

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