140 



SYNOPSIS OF THE HUMMING-BIRDS. 



Male. Head and throat glittering pale grass-green. Upper surface coppery- 

 brown ; band across the rump white. A white patch beneath the green of the 

 throat. Upper part of abdomen and flanks bronzy-green. Lower portion of belly 

 gray. Upper tail coverts red, changing to golden-green. Tail black, shafts rufous. 

 Under tail coverts golden-green bordered with black. Bill: Maxilla black, man- 

 dible flesh-color at base, rest black. Total length, 3§ in. Wing, \\ in. Tail, 11 

 in. Culmen, | in. 



Female. Unknown. 



Only two examples of this species have been obtained ; one in my collection, and 

 one in that of Mr. Gould. 



Genus LXXIT.— DISCURA. 



PI at ur us, Less., Ois. Monch. (1829). p. xxii (nee Latr. Kept.). 

 Ocreatus, Gould, P. Z. S. (1846), p. 86 (partim). 

 Discosura, Bon., Comp. Rentl., p. 383 (18.")0), vol. i, p. 84. 

 Discura, Reich., Aufz. der Colib., p. 8 (1853). 



Type. 

 T. lovgicaudus, Gmel. 

 T. longicaiidiis, Gmel. 

 T. longicaudus, Gmel. 

 T. longicaudus, Gmel. 



Fig. 80. 



Ch. Bill short, straight, cylindrical, converging 

 rapidly near the tip to a slender point. Tail 

 deeply forked, the rectrices pointed, the outermost 

 ones bare of webs near their tips, and terminating 

 in a spatula. Sexes unlike in plumage. 



Range. Guiana, Brazil. 



But one species of this genus is known, very 

 closely resembling the Gouldia laetiiiai in plumage, 



but possessing spatules on the external rectrices, and thus leading directly to 

 Steganura. 



Diteura longicauda. ^ . Cayenne. Salle. 



1. Discura longicanda. 



Trochilus longicaudus, Gmel., Syst. Nat., vol. i, p. 498 (1788). 



Trochilus platiirus, Latvl, lud. Oniith., vol. i, p. 317 (1790).— Shaw, Gen. Zool., vol. viii, p. 316.— Vieili,., 



Nouv. Diet. Hist. Nat. (1817), torn, vii, p. 370.— Id., Eney. M6th., tom. ii, p. 5G9.— Pb. Max., Beit, 



Naturg., t. iv, p. 96.— Tschud., Faun. Pcrnan., p. 245 (1840-46). 

 MeUisuga plalura, Steph., Geu. Zool., vol. siv, p. 242. 

 Trochilus bilujihus, Te.mm., PI. Col., no. 18, fig. 3. 



Ornisviya platura. Less., Ois. Mouch., p. 136, pi. 40 (1829).— Id., Snpp., p. 159, pi. 31 (1831). 

 Trochilus (Ocreatus) ligonicaudus, Gould, P. Z. S. (1846), p. 86. 

 MeUisuga ligonicauda, Gray, Gen. Birds, vol. i, p. 113, sp. 57. 

 Discosura longicauda, Bon., Consp. Gen. Av., vol. i (1850), p. 84. 

 Discosura ligonicauda, Bon., Consp. Gen. Av., vol. i (1850), p. 84. 



Discura platura, Reich., Aufz. der Colib., p. 8 (1853).— Id., Troch. Enum., p. 5, pi. 706, figs. 4591-95 (1855). 

 Discura longicauda, Reich., Aufz. der Colib., p. 8.— Id., Troch. Enum., p. 5, pi. 706, figs. 4591-95.— Bon., 



Rev. and Mag. Zool. (1854), p. 257.— Gould, Mon. Troch., vol. iii, pi. 126.— Id., Intr. Troch., octavo ed., 



p. 85.— Cab. and Hein., Mus. Hein. (1860) Th., iii, p. 65. 



Hah. Guiana, Brazil. 



Male. Face, throat, neck, and upper part of breast shining grass-green. A small 

 black spot on the chin. Back and upper tail coverts bronzy-green. A band of 



