781 
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irregular patch of pure-white scales covers the plure; chet as follows: a down- 
ward and backward projecting group of brown bristles at middle of side of 
pronotum, a group of golden brown over root of wing, and an ill-defined group 
scattered between these two; scutellum with light-green, flat scales as on sides 
of pronotum and a marginal row of golden bristles; metanotum very dark-brown, 
longitudinally slightly suleate on median line,-and densely pilose. 
Abdomen with green scales dorsally on basal segments, purplish or wine-colored 
on apical, first segment nearly all white, save a dorsal green patch; second and 
third, green with lateral white patch; fourth, nearly all green with faint sugges- 
tion of white laterally; fifth, as third but with some purplish seales and small 
white tuft; sixth and seventh, purplish, the former having lateral tufts of white 
and yellow, the latter, tufts of dark-brown; eighth segment, subtriangular, with 
green scales and yellow lateral tufts; venter, with purplish or violet-brown scales, 
the white patches of the dorsum being almost duplicated below, except on sixth 
segment, which is as fifth. 
Legs variegated and banded; coxe with large lateral patches of pure white 
scales, femora with dark-green and white areas, the anterior being all green, the 
middle internally whitish basally, the posterior, externally for nearly whole 
length; anterior tibie bluish-green externally with narrow, yellow stripe in- 
ternally; mid tibie golden-yellow except at apex which is dark-blue-green and a 
mottled area externally at base, posterior tibia all dark-blue-green except a 
narrow, internal area in its middle; anterior metatarsi pure white with green at 
base; mid metatarsi the same, minus the blue-green at base, only a faint sug- 
gestion of which is left; posterior all dark-blue with white, mottled area over 
their basal third; anterior tarsi purplish-brown-green except first, which is 
white for nearly its whole length, then brown; mid tarsi white, except last 
segment which is brown-green; posterior tarsi same as anterior; ungues on all 
legs simple and of about same size. 
Wings fuliginous, and irridescent, the veins having bluish-purple scales; first 
submarginal 4 length and 4 width of second posterior cell, its proximal angle 
very acute, that of the second posterior rounded; mid cross vein nearer base of 
wing than posterior. (Pl. I, fig. 10.) The cyclic vein very strongly developed 
and curving from end of vein 5 upward and inward in first anal cell, its branch 
curving downward and outward being partially parallel with wing margin. 
(Pl. I, fig. 7.) Halteres basally swollen, pale-yellow; knobs lighter, with few 
dark seales. 
¢ similar in general coloring to 9 except as follows: Scutellar bristles dark- 
brown, abdomen dorsally, dark-green basally to dark-purplish-blue apically, 
second to fifth segments having only faint suggestion of white laterodorsally ; 
anal tufts black in all segments except eighth which has a few golden bristles, 
more evident ventrally. Ventrum with white, lateral patches on fifth and sixth 
segments, occupying a total of % their width; on other segments a slight indica- 
tion of these patches in form of a light line. Legs, with dark-blue-green scales 
on all segments, a white longitudinal area on the posterior femora externally 
and internally. The mid and posterior metatarsi and first tarsal joints have 
light-green bands basally, otherwise all dark-blue-green. All legs in ¢@ and 9 
strongly spinose with exception of tarsal segments. 
The eyes of the g are blue-black; the antenne have first joints black, with 
white pruinescence, the second twice as long and 1.5 times as wide as any succeed- 
ing; all joints except last 2 with fine, brown pubescence and whorls of long, 
dense, brown bristles at their middle; last 2 joints filiform and setose with 
whorls of bristles from their bases; clypeus black with white pruinescence, its 
margin bicrenate; palpi very long, % length of body and slightly longer than 
proboscis, reflexed at their middle, 3-jointed (PI. I, fig. 5) and strongly scaled, the 
