514 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Coloration.—Back, etc., metallic bronze-green, the middle rectrices 
and basal portion of other rectrices less bronzy or more bluish green, ~ 
the outer rectrices blackish terminally or subterminally; under parts 
partly or wholly grayish; a white postocular spot. Adult male with 
head mostly metallic violet or violet-blue, under parts of body glossed 
with metallic greenish, and without grayish tips to lateral rectrices; 
adult female with pileum greenish blue, whole under parts pale gray, 
and outer rectrices tipped with pale gray. 
Range.—Nicaragua to Venezuela and Ecuadér. (Monotypic.) 
KLAIS GUIMETI (Bourcier and Mulsant). 
GUIMET’S HUMMING BIRD. 
Adult male-—Pileum bright metallic violet or violet-blue, becom- 
ing more decidedly blue (sometimes even greenish) posteriorly; rest 
of upper parts metallic bronze-green or greenish bronze, the upper 
tail-coverts purer green or bluish green; middle rectrices metallic 
silvery bronze-green or bluish green, the remaining rectrices similar 
basally, but with terminal half (approximately) dull black or dusky, 
narrowly tipped with light brownish gray; remiges purplish dusky; a 
postocular spot of white; chin, throat, and malar region rich metallic 
violet or violet-blue; rest of under parts brownish gray, spotted or 
flecked (except on abdomen) with metallic green or bronze-green, 
the under tail-coverts brownish gray margined with dull white or 
pale gray; bill dull black; iris dark brown; feet grayish brown (in 
dried skins); length (skins), 70-82 (75); wing, 45-52.5 (49.5); tail, 
25.5-31 (28.4); culmen, 12-13.5 (12.8).¢ 
Adult female.—Above similar to adult male, but with metallic blue 
of pileum lighter, decidedly blue (not violaceous) or even greenish in 
hue, lateral rectrices more abruptly tipped with pale gray, and middle 
rectrices sometimes blackish terminally; under parts pale gray, the 
sides and flanks glossed or spotted with metallic green or bronze- 
green; length (skins), 73-79 (76); wing, 4448.5 (45.9); tail, 23-27 
(25.1); culmen, 11.5-14 (13).° 
Young.—Similar to the adult female, but pileum dull metallic 
green instead of bright blue or bluish green. 
a Twenty-six specimens. 
b Seventeen specimens. 
Locality. Wing. | Tail. ot 
¥ culmen. 
MALES 
Ten adult males from Costa Rica.....--...----- 2-01. eee e ee cece cece eee cece ees 48.6 28.2 12.9 
Five adult males from Panamé.............-2-- 22-20-2200 ce ec ee cece cece eee eee 49 27.9 12.9 
Nine adult males from central Colombia............-...2-2.......2.eeeceee eee 50.6 28.8 13.7 
One adult male from eastern Ecuad6r (Napo)......2...2.2.0.ec cece eeeeeeee eee 52 2 | #43 
One adult male from northern Peru (Chanchamoyo)..................2..222..2- 48.5 27.5 12 
FEMALES. 
Eleven adult females from Costa Rica..................02 06602 eee cece cece eens 45.5 25 13 
Five adult females from central Colombia. ............ 2.02.02. eee cece eee eee 46.7 25.4 12.9 
One adult female from eastern Ecuad6r (Napo)......--.. 22.0600. cece eee e cee ee 45 24 14.5 
