Gen us Stegomyia. 
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O 
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5. Stegomyia Nigeria, n. sp. 
(Fig. 56, PL XIV.) 
Thorax deep brown, with black scales, two short median pale 
lines in front of the mesonotum, and a white patch on each side. 
Abdomen black, with narrow basal white bands and a white 
spot on each side ; venter white scaled. Legs dark brown, tarsi 
basally white banded, the last in the hind legs all white, and also 
most of the penultimate joint. 
9 . Head black, with a narrow patch of white scales in the 
middle; palpi black, with white scales at the tip, and a few long 
bristles; proboscis black, antennae dark brown; basal joint 
black, with a tuft of white scales, forming two white spots just 
below the eyes, and on each side of a small tuft of white down 
projecting between the eyes, which are black and reddish, with 
a very narrow border of white scales. 
Thorax dark brown in some lights, deep black in others, 
covered with a felt of deep black scales, like C . vigilax , a few 
creamy scales in front of the scutellum; two thin, short, 
parallel, narrow rows of yellowish scales in front on the meso¬ 
notum, and a patch of brilliant white scales on each side, just 
showing above; scutellum blackish-brown, with a few broad 
white scales; metanotum deep chestnut-brown; pleurae bright 
chestnut-brown, with several patches of brilliant white scales. 
Abdomen black, with narrow basal bands of white scales. 
The black scales have a purplish tinge in some lights, a basal 
white spot on each side, especially on the basal segments. 
Venter with numerous white scales. Coxae with silvery-white 
scales; fore legs brown, pale at the base, dark towards the 
tarsi; mid legs with a white spot (not a band) at the base of 
the metatarsus and first tarsal joint; hind legs, with the base 
of the metatarsus and first two tarsi, basally white banded, the 
third tarsus nearly all white, and the fourth all white; hind 
tibia much swollen at the apex. 
Wings with brown veins and scales, testaceous at the base, 
scales long; first sub-marginal cell about twice as long as its 
stem, longer and narrower than the second posterior cell, whose 
stem is about equal to its length; posterior cross-vein nearly 
three times its own length distant from the mid cross-vein; 
first long vein much curved in the middle; fringe brown. 
Length. —4 * 5 mm. 
