666 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
CHRYSOLAMPIS MOSQUITUS (Linneus). 
RUBY-AND-TOPAZ HUMMING BIRD. 
Adult male.—Entire pileum, from frontal antie to occiput, inclu- 
sive, intense metallic red (rose red to carmine); chin, throat, and 
chest bright metallic orange or golden; hindneck, sides of neck, and 
extreme upper back velvety black, passing into dark bronzy olive on 
lower back, rump, upper tail-coverts, scapulars, and wing-coverts; 
tail clear chestnut-rufous, faintly glossed with purplish, the rectrices 
margined terminally with dark bronzy olive; remiges dusky, faintly 
glossed with violaceous; under parts of body plain grayish brown or 
sepia, the femoral tufts white; under tail-coverts cinnamon-rufous; 
bill dull black; iris dark brown; feet dusky; length (skins), 85-98 
(87); wing, 52-58 (53.2); tail, 30.5-36 (31.4); exposed culmen, 
9.5-13 (11).¢ 
Adult female.—Above metallic bronze-green or greenish bronze, 
more decidedly bronzy (often coppery bronze) on hindneck and upper 
back, passing into dull grayish brown on forehead; middle pair 
(sometimes two middle pairs) » of rectrices bronze-green or greenish 
bronze, usually more dusky at extreme tip; remaining rectrices 
chestnut-rufous basally, blackish subterminally (more or less broadly), 
and tipped with a large triangular spot of white—the outermost rec- 
« Thirty-one specimens. 
6 Occasionally specimens agreeing in every other respect as regards coloration have 
the middle rectrices (like the others) chestnut-rufous broadly tipped with dusky and 
dark metallic green. 
Locality. Wing. | Tail. pe 
culmen. 
MALES. 
Ten adult males from central Colombia (Bogoté).........2-22..-..eec cece eee eeee 55.2 32.5 10.7 
Four adult niales from north coast Colombia (Cartagena and Santa Marta)...... 53.5 31.5 12 
Five adult males from Venezuela................ 54 31.7 11.9 
Three adult males from Trinidéd.............-.. 56.8 33 11.3 
Two adult males from Tobago... 56.1 34.2 11.5 
Two adult males from Curagao............-...... 54.5 34.2 11 
One adult male from British Guiana. 56.5 32 1l 
One adult male from Cayenne..................- 55.5 32.5 11.5 
Four adult males from Brazil............. 0.0. cece cece eee e eee cee e ence 55 33 11.5 
FEMALES. 
One adult female from central Colombia (Bogot&)...............c2e cece ee ee neon 54 30 15.5 
Four adult females from northern Colombia...........2-. 22.0. cece ccc eee ees 52 30.2 14.4 
Three adult females from Venezuela 53.7 29.5 15.2 
Two adult females from Triniddd.......2.... 00. .ee ee cece cence eee ee cence eneee 54.7 30.8 14.5 
Two adult females from Tobago.........2-0.2-ee cece eee e cece c eet n cence eceeeeene 56.7 34,2 15.5 
One adult female from Surinam........... 52.5 31 13.5 
One adult female from Cayenne..........0..0. sce e eee eee cen cece t eee n nt eeeeeeens 63.5 30.5 13 
One adult female from Brazil............ 002.0022 e eee eee eee een cen nee eeeee 52.5 31 v7 
