BIRDS OF NORTH AND MIDDLE AMERICA. 341 
Birds Brit. Mus., xvi, 1892, 64.—Fretp, Auk, xi, 1894, 125 (Port Henderson, 
Jamaica).—Roruscui1p, Ibis, 1894, 547 (crit.).—Boucarp, Gen. Hum. Birds, 
1895, 168.—Lonaz, Ibis, 1896, 496 (habits). 
[ Aithurus] polytmus Gray, Hand-list, i, 1869, 134, no. 1717.—SciatTer and Savin, 
Nom. Av. Neotr., 1873, 82.—Cory, List Birds West Ind., 1885, 17.—SHarpe, 
Hand-list, ii, 1900, 120. 
Aiturus polytmus Boucarp, Notes quelques Troch., 1873, 15. 
Aiturus polytmus Mutsant and VERREAUX, Hist. Nat. Ois.-Mouch., i, livr. 3, 
1874, pl. 13. 
Ayturus polytmus Hartrert, Kat. Vogelsamml. Mus. Senckenb., 1891, 115. 
Ornismya cephalatra Lesson, Hist. Nat. Ois.-Mouch., 1829, pp. xviii, 78, pl. 17; 
Index Gen. and Synop. Troch., 1832, p. xvi. 
[ Polytmus] cephalatra BonaraRte, Consp. Av., i, 1850, 72. 
Polytmus cephalatra Bonararte, Rev. et Mag. de Zool., 1854, 354. 
Polytmus cephalater SctatER, Proc. Zool. Soc. Lond., 1861, 79.—ALBREcuT, Journ. 
fiir Orn., 1862, 201—Mutsanvt and Verrzaux, Classif. Troch., 1866, 36. 
Trochilus maria Gosse, Ann. and Mag. N. H., iii, 1849, 258.—Gossg, Illustr. Birds 
Jam., 1849, pl. 22. 
Aithurus fuliginosus Marca, Proc. Ac. Nat. Sci. Phila., 1863, 285 (St. Ann’s). 
[Aithurus] fuliginosus Gray, Hand-list, i, 1869, 134, no. 1718. 
Polytmus viridans (ex Brisson) RetcHensBacu, Aufz. der Colibr., 1854, 11; Troch. 
Enum., 1855, 9, pl. 799, figs. 4858-4860. 
(2?) Trochilus forficatus (not of Linnzeus) Vremot, Nouv. Dict. d’Hist. Nat., vii, 
1817, 366 (Jamaica; based on Ois. Dorés, pl. 16). 
(?) Ornismya furcata (not Trochilus furcatus Gmelin) Lesson, Index Gen. and 
Synop. Troch., 1832, p. xxii, part (Jamaica). 
(?) Aithurus taylori@ Rorascump, Bull. Brit. Orn. Club, no. xix, June 30, 
1894, p. xlvii, in text (St. Andrews, Jamaica; coll. Tring Mus.);: Ibis, 1894, 
548 (reprint).—Boucarp, Gen. Hum. Birds, 1895, 402. 
[Aethurus] polyt[mus] taylori Sruon, Cat. Troch., 1897, 24. 
AITHURUS SCITULUS Brewster and Bangs. 
BLACK-BILLED STREAMER-TAIL. 
Similar to A. polytmus but slightly smaller, and with bill wholly 
black, the adult male with green of under parts less yellowish, that of 
back, etc., more grass-green (less bronzy). 
Adult.male—Pileum (including latero-occipital crests), together 
with loral, orbital, and postocular regions, opaque velvety black; 
back, scapulars, wing-coverts, rump, and upper tail-coverts, metallic 
grass-green; remiges dull blackish or dusky, faintly glossed with pur- 
plish, the inner secondaries partly metallic green; tail uniform black, 
very faintly glossed with bluish; under parts bright metallic green, 
the feathers of throat and chest white basally (mostly concealed), 
those of abdomen, etc., more grayish basally; under tail-coverts 
bluish black; bill wholly black; iris dark brown; feet dusky; length 
(skins), including elongated rectrices, 211-250 (236); wing, 62.5-65 
@ Apparently a variety or ‘‘sport” of A. polytmus distinguished by possession of a 
ruby-red spot on the throat. See also Brewster and Bangs, Proc. New Engl. Zool. « 
Club, ii, 1901, 49. 
