456 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
jf. Smaller (wing of adult male averaging 66.9, tail 37.2, culmen 23.5; 
female, wing 65.2, tail 35.2, culmen 24.1); metallic color bordering 
black of throat and chest more bluish. (South America east of Andes 
to Panam4; St. Andrews Island, Caribbean Sea.) 
Anthracothorax nigricollis nigticollis, adult male (p. 459). 
J. Larger (wing of adult male averaging 67.2, tail 37, culmen 25.3; female, 
wing 69.5, tail 37, culmen 27.2); metallic color bordering black of 
throat and chest more greenish. (Western Ecuadér.) 
Anthracothorax nigricollis iridescens (extralimital).¢ 
ee. Throat and under parts of body narrowly black (medially), the latter 
sometimes merely darker green or bluish along median line. (Anthra- 
cothorax prevostt.) 
f. Bill longer (culmen averaging 26.2); under parts of body usually more 
distinctly blackish along median line. (Southern Mexico to Hondu- 
FAS) issn Anthracothorax prevostii prevostii, adult male (p. 463). 
Jf. Bill shorter (culmen averaging less than 25); under parts of body less 
distinctly blackish along median line. 
g. Bill more slender, the culmen 23.5-25.5; upper parts and lateral under 
parts metallic green or bronze-green. (Nicaragua and Costa Rica.) 
Anthracothorax prevostii gracilirostris, adult male (p. 465). 
gg. Bill stouter and shorter, the culmen 22-23.5; upper parts and lateral 
under parts bronze or golden bronze. (Old Providence Island, 
Caribbean Sea.) 
Anthracothorax prevostii hendersoni, adult male (p. 466). 
dd. Throat metallic green or bronze. 
e. Chest only partly black or without black, throat emerald green or bright 
golden green. 
f. A black spot on chest; center of abdomen blackish. (Trinid4d and 
Venezuela to Lower Amazon.) 
Anthracothorax gramineus (extralimital).® 
J. No black on chest. (Panamé4 and southern Costa Rica.) 
Anthracothorax veraguensis, adult male (p. 467). 
ee. Chest wholly black. 
jf. Under parts of body mostly (sometimes wholly¢) black; upper parts 
dark or deep bronze-pgreen; larger (wing averaging 67.9, tail 42.9, 
culmen 23.8). (Island of Haiti.) 
Anthracothorax dominicus, adult male (p. 468). 
« Lampornis iridescens Gould, Introd. Troch., oct. ed., 1861, 65 (Guayaquil, w. 
Ecuador; coll. J. Gould).—Anthracothorax violicaudus iridescens Oberholser, Proc. 
U.S. Nat. Mus., xxiv, no. 1258, Jan., 1902, 321 (Nanegal, w. Ecuador; crit.). 
b [Trochilus] gramineus Gmelin, Syst. Nat., i, pt. 1, 1788, 488 (based on Hausse col 
vert Buffon, Hist. Nat. Ois., vi, 58; Black-breasted Hummingbird Latham, Synopsis, i, 
pt. 2, 756).—Trochilus gramineus Audebert and Vieillot, Ois. Dorés, i, 1801, 23, pl. 
9,.—Lampornis gramineus Gould, Mon. Troch., ii, 1858, pl.-77; Introd. Troch., oct. ed., 
1861, 65; Elliot, Classif. and Synop. Troch., 1879, 40; Salvin, Cat. Birds Brit. Mus., 
xvi, 1892, 95.—L[ampornis] gramineus Hartert, Das Tierreich, Troch., 1900, 98 
(monogr.).—[Polytmus] gramineus Gray, Hand-list, i, 1869, 125, no. 1581.—Anthraco- 
thorax gramineus Berlepsch, Novit. Zool., xv, 1908, 263 (Cayenne; crit.).—[Trochilus] 
maculatus Gmelin, Syst. Nat., i, pt. 1, 1788, 488 (based on Colibri & cravate verte Buffon, 
Hist. Nat. Ois., vi, 56; Colibri & gorge verte de Cayenne Buffon, Pl. Enl., pl. 671, fig. 1; 
Green-throated Hummingbird Latham, Synopsis, i, pt. 2, 755).—{Trochilus] pectoralis 
Latham, Index Orn., i, 1790, 306 (=T. gramineus Gmelin).—Polytmus dominicus (not 
Trochilus dominicus Gmelin) Léotaud, Ois. Trinidad, 1866, 132. 
¢ Except for white femoral tufts. 
