Messrs. Salvin and Elliot on the Troehilidse. 277 



Glaucis melanura, Gould, P. Z. S. (1860) p. 364; id. Mon. 

 Troch. pi. 9 ; id. Intr. Troch. p. 39. 



Glaucis lanceolata, Gould, Mon. Troch. pi. 8 ; id. Intr. 

 Troch. p. 39. 



Glaucis aenea, Lawr. Pr. Acad. Phil. 1867, p. 232. 



Hab. Tropical South America, and Central America to 

 Costa Rica. 



We have examined the following specimens : — 



Two, South Brazil (Youds), three, Bahia (Wucherer) , Mus. 

 S.&G. ; one, Brazil (Whitely), Mus. D. G. E. ; one, Eng. 

 do Gama, Brazil (Natterer), Mus. S.&G.; two, Cayenne 

 (Deyrolle), Mus. D. G. E. ; two, Pebas (Hauxwell), Mus. 

 S. & G. ; one Xeberos (Bartlett), Mus. D. G. E. ; one, 

 Barra do Rio Negro (Natterer), Mus.' S.&G.; one, Trinidad 

 (ex Gould), Mus. P. L. S. ; two, Trinidad, Mus. D. G. E. ; 

 one, Merida (Goering), Mus. D. G. E. ; one, Caraccas (Goer- 

 ing), Mus. S.&G.; one, Venezuela (Salle), Mus. D. G. E. ; 

 one, Bogota (ex Verdey), Mus. D. G. E. ; one, New Gra- 

 nada (Leadbeater) ; Mus. P. L. S.; three, Panama (McClen- 

 nan), Mus. D. G. E. ; four, Panama (McClennan), Mus. 

 S.&G.; one, Panama (Arce), Mus. S.&G.; one, Panama 

 (Salvin), Mus. S. &. G. ; one, Costa Rica (Endres), Mus. 

 S. & G. ; one, Costa Rica (Endres), type of G. aneus. 



IV. The Genus Threnetes. 



This genus has generally been deemed to consist of three 

 species — Thr. leucurus, cervinicauda, and anionics. We here 

 unite with these a species heretofore included in the genus 

 Glaucis as G. ruckeri, as being in no way separable from them. 



The geographical distribution of this genus is restricted in 

 South America to the northern portion of the continent, no 

 species having been found south of the basin of the Amazon. 

 Two species occur in Guiana alone, T. leucurus and T. an- 

 ionic ; another, T. cervinicauda, spreads over the regions of 

 the Upper Amazon westward to the roots of the Andes, while 

 the fourth, T. ruckeri, stretches through western Ecuador and 

 the Isthmus of Panama as far north as Costa Rica. 



Threnetes leucurus. 



Trochilus leucurus, Linn. Syst. Nat. vol. i. p. 190. 



