138 TROCnILT. 



Lcsbia margareHire, Jlmic, J.f. Orn. 1863, p. 213. 



Lesbia cyanurus, Hoinc, J.f. O'-n. 18G3, p. 213. 



MelHsuga salvadoiii, Beav. Ann. Mus. Zool. Flor. 1805, p. 204. 



Cynantbus gorgo, Miils. S)- Verr. Class. Troch. p. 83. 



Cyanolesbia cyanura gorgo, Berl, J.f. Orn. 1887, p. 326. 



Adult male (Bogota). Upper surface dark shining grass-green ; 

 crown glittering green, drawn to a point towards the nape and edged 

 with black on either side, when viewed from in front ; under sur- 

 face dull green, a gular spot glittering sapphire-blue ; tail rich 

 violet-blue, black at the base, the exposed portion of the eight 

 median feathers very frequently shading into glittering green 

 towards their tips; bill black. Total length about 8-3 inches, 

 wing 2-75 ; tail, central rectrices 1, lateral about 5"5 ; bill 0'S5. 



Adult female. Upper surface shining bronzy green ; crown shining 

 green ; under surface chestnut ; throat white, each feather with a 

 green disk ; flanks green ; lateral rectrices steel-blue with white 

 tips, rest shining green above. Length of lateral rectrices 1'6 inch, 

 of the next pair 1'75, central 0-9. 



Young males are like the old males above and beneath ; but the 

 crown is dull green, and the tail in the first instance like that of 

 the female ; the brilliant rectrices of the adult are first developed, 

 and afterwards the gular spot and the glittering crown. 



Hah. Colombia and Venezuela. 



Some females from Bogota have the crown shining blue and the 

 breast white. 



Specimens from the VenezAielan province of Caracas (margaretJice, 

 Heine) are lighter green above, and all the rectrices except the 

 lateral pair are glittering green like those of C. mocoa. The male 

 from Caripe, further to the eastward, has a tail which is nearly 

 pure violet-blue on the exposed upper surface, and the lateral pair of 

 feathers are unusually long and wide. Specimens from Merida are 

 without the gular spot. It is quite possible that several well-marked 

 forms are here united, but most of the specimens before me have their 

 origin too indefinitely marked to justify my attempting their sepa- 

 ration. The males from Bogota with j^ure violet tails may come 

 from a different valley from those which have the central rectrices 

 more or less green. 



The name Trochilus cjianm-us cannot be used for any of these 

 forms. Its application by VieiUot in 1823 (Enc. Moth. p. 550) to 

 a figure of Seba's (Thes. i. p. 84, pi. 51. f. 7), which does not repre- 

 sent one of the TrocJiilidce at all, excludes Stephens's T. cyanurus 

 of 1826. I therefore use gorgo, Eeich., for the Bogota bird, as has 

 already been done by Count Berlepsch. 



Linnajus's title T. forjicatus, has often been applied to this bird, 

 but a reference to Edwards's plate (upon which the Linnajan name 

 was founded) and the reproductions of it, shows that it cannot be 

 employed with any certainty. 



The title C gorgo (Eeich.) applies to the Colombian bird, -njhich 

 has the central rectrices more or less craerald-grecn, and thus comes 

 very near to the Caracas bird called C. margurethce (Heine). 



