35. THKENETES. 265 



2. Threnetes cervinicauda. 



Threnetes cervinicauda, Gould, P. Z. S. 1854, p. 109; id. 3Ion. Troch. 



i. pi. 14 (Sept. 1861) ; id. Intr. Troch. p. 40; Scl. Sj- Salv. P. Z. S. 



1867, p. 979, 1873, p. 286 ; Salv. ^f ElUot, Ibis, 1873, p. 278 ; 



Muls. Hist. Nat. Ois.-Mouches, iv. p. 137; Eudes-Desl. Ann. Mus. 



Caen, i. p. 93 ; Boucard, The Humming Bird, i. p. 17. 

 Glaiieis leucurus, var. cervinicauda, Muls. ^ Verr. Class. Troch. 



p. 14 ; Muls. Ann. Soc. Linn. Lyon, xxii. p. 200. 

 Glaucis cervinicauda, Elliot, Syn. Troch. p. 8; Tacx. Orn. Per. i. 



p. 260; Berl. J.f. Orn. 1887, p. 314. 

 Polytmus cervinicauda, Gray, Hand-l. B. i. p. 127. 



Adult. Very similar to that of T. leucurus, bub rather larger, the 

 upper surface rather darker, and the rectrices buff where in the 

 allied form they are white. 



Hab. Colombia ; Eastern Ecuador and the valley of the Upper 

 Amazons. 



a. Ad. sk. Colombia (Bogota make). Salvin-Godman Coll. 



b. Ad. ; c. Juv. Canelos, Ecuador {Buckley). Salvin-Godman & 

 sk. Gould Colls. 



d, e. Ad. sk. Sarayacu, Ecuador (Buckley). Salvin-Godman Coll. 



/. Ad. sk. Chamicuros, Peruvian Ama- E. Bartlett [C.]. 



zons. 



g-i. c? ad. sk. Pebas, Amazons, Mar., June, & Salvin-Godman & 



July {J. Hau.xivell). Gould Colls. 



./. Ad. sk. Amazons (Hauxivell). Gould Coll. 



k. Ad. sk. Quito or Napo, Ecuador. Gould Coll. 



(A type of the species.) 



8. Threnetes nickeri. 



Trochilus ruckeri, Bourc. P. Z. S. 1847, p. 46. 



Glaucis ruckeri, Gould, Mon. Troch. i. pi. 11 (Nov. 1851) ; id. Litr. 



Troch. p, 39 ; Later . A?m. Lye. N. Y. vii. p. 319, ix. p. 121 ; Scl. 



4- Salv. P. Z. S. 1864, p. 364 ; Muls. ^- Verr. Class. Troch. p. 14 ; 



Elliot, Syti. Troch. p. 8 ; Eudes-Desl. A7in. Mus. Caen, i. p. 87. 

 Threnetes ruckeri, Reich. Aufz. d. Col. p. 15 ; Bp. Rev. Zool. 1854, 



p. 249 ; Salv. P. Z. S. 1870, p. 204 ; id. Ibis, 1873, p. 428 ; Salv. i^- 



Elliot, Ibis, 1873, p. 278 (pt.) ; 3Iuls. Hist. Nat. Ois.-Mouches, i. 



p. 47 ; id. Ann. Soc. Linn. Lyon, xxii. p. 200. 

 Polytmus ruckeri, Gray, Hand-l. B. i. p. 126. 



Adult. Upper surface shining bronze-green, crown darker ; post- 

 ocular spot and maxillary stripe buff: lores, ear-coverts, and chin 

 black ; breast cinnamon ; rest of the imder surface brownish grey ; 

 iinder tail-coverts with bronze-green discs ; central rectrices like the 

 back, proximal half of the lateral white, distal half black, all tipped 

 with white : maxilla black ; mandible flesh-colour, tip black ; feet 

 yellow. Total length about 4'5 inches, wing 2-3, tail 1'3, bill 1'35. 



Young birds have the chin and throat-marks ill-defined. 



Mj' authority for including Guatemala in the range of this species 

 rests on the existence of a specimen obtained in that country and 



