604 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
white streaked or spotted with dusky; rest of under parts as in adult 
male, but sides more strongly suffused with pale cinnamon-rufous 
and without intermixture of green; length (skins), 67-77 (72); wing, 
40.5-41.5 (41); tail, 24-26 (25.2); exposed culmen, 11-12.5 (11.7).¢ 
Immature male—Similar to the adult female, but sides and flanks 
glossed with metallic bronze-green; older specimens with one or 
more dull grayish purple or dull purplish green feathers on throat. 
Highlands of Costa Rica (Voleén de Irazi; Volcén de Turrialba; 
Las Cruces de Candeléria?; Dota Mountains) and western Panama 
(Volcan de Chiriquf). 
Selasphorus torridus Sauvin, Proc. Zool. Soc. Lond., 1870, 208 (Vole4n de Chiriquf, 
Panamé4; coll. Salvin and Godman); Cat. Birds Brit. Mus., xvi, 1892, 395.— 
Mutsant and VERREAUX, Hist. Nat. Ois.-Mouch., iv, livr. 2, 1877, 101.— 
Exuiot, Classif. and Synop. Troch., 1879, 112.—Zr.Eepdén, Anal. Mus. Nac. 
Costa Rica, i, 1887, 122 (Volcd4n de Irazu, Costa Rica) —SaLvin and Gopman, 
Biol. Centr.-Am., Aves, ii, 1892, 354, pl. 56, figs. 2, 3 (excl. syn. part).—Bov- 
caRD, The Hum. Bird, ii, 1892, 73 (Volc4n de Chiriquf); Gen. Hum. Birds, 
ii, 1892, 10 (Volc4n de Chiriquf).—Banes, Proc. New Engl. Zool. Club, iii, 
1902, 31 (Volc4n de Chiriquf, 10,300 ft.)—Frrry, Pub. 146, Field Mus. 
N.H., orn. ser., i, no. 6, 1910, 264 (Volc4n de Turrialba, Costa Rica; habits). 
[Selasphorus] torridus ScLaTER and Satvin, Nom. Av. Neotr., 1873, 84.—Mutsant, 
Ann. Soc. Linn. Lyon, n. s., xxii, 1876, 227.—Suarpe, Hand-list, ii, 1900, 141. 
S[elasphorus] torridus Ripeway, Rep. U. 8. Nat. Mus. for 1890 (1891), 341 (diag- 
nosis, etc.).—Hartert, Das Tierreich, Troch., 1900, 206. 
Selasphorus flammula torridus CARRIKER, Ann. Carnegie Mus., vi, 1910, 547 (Volcén 
de Irazti and Dota Mts., Costa Rica; crit.). 
SELASPHORUS ARDENS Salvin. 
GLOW-THROATED HUMMING BIRD. 
Most like S. fammula but smaller, especially the bill; adult male 
with middle rectrices mostly if not wholly purplish black (except for 
the cinnamomeous edging to both webs) and gorget intense (but 
not brilliant) reddish purple instead of dull rose purple; adult female 
with lateral rectrices more extensively tipped with pale cinnamon- 
rufous, middle rectrices broadly edged (for more than basal half) 
with cinnamon-rufous, and sides of head partly cinnamon-rufc.... 
4 Three specimens. 
Ex- 
Locality. Wing. | Tail. | posed 
culmen. 
MALES, 
Three adult males from Costa Rica.........--.--0-- 02 e cece cece eee eee e eee eee 40 27.8 12.3 
Two adult males from western Panamd...... asians SR oe Hee Deleon eet mR ET 40.7 | 27.5 1.7 
FEMALES. 
One adult female from Costa Rica.............-2- 220 scence eee reece ee eee eee 41.5 25.5 11 
Two adult females from western Panamé..s........----- 2-2 eee eee eee eee eee ee 40.7 25 12.5 
