314 
Abdomen deep blackish brown, with narrow white basal 
bands, first abdominal segment rather ochraceous, covered with 
dusky black scales and pale brown hairs; posterior border-bristles 
chestnut-brown, alternating long and short; venter mostly creamy- 
white, with narrow dark apical bands to the segments; the dorsal 
white bands form more or less white lateral spots. 
Legs dark brown, pale at the base, femora grey ventrally, 
femora, tibiae and metatarsi spiny; fore and mid ungues equal, 
uniserrated; hind equal and simple. 
Wings with the fork-cells rather short; scales brown; first 
sub-marginal cell very little longer and slightly narrower than 
the second posterior cell, their bases about level, stem of the 
former equal to about half the length of the cell, of the latter 
nearly two-thirds of its length; posterior cross-vein a little more 
than its own length distant from the mid cross-vein. 
Halteres ochraceous, with pale scales over the knob, and dark 
ones on one side. 
Length. —3 mm. 
£ . Antennae black, with dense black plumes; palpi pale 
ochraceous, densely covered with black scales, the antepenul¬ 
timate joint with two narrow pale rings; apical joint small, 
a little more than half the length of the penultimate joint, 
acuminate, penultimate joint wider than the apical, the ante¬ 
penultimate expanding at the tip, the last two with long brown 
hair-tufts on one side, especially the penultimate, a few long 
hairs on the apex of the antepenultimate, and a few long black 
bristles on the apex of the last two joints; proboscis deep brown, 
almost black • fore and mid ungues unequal, the larger uniser¬ 
rated ; hind ungues equal, small and simple ; fork-cells of wings 
small; the first sub-marginal shorter and considerably narrower 
than the second posterior, its stem nearly equal to the length 
of the cell; stem of the second posterior equal to the length of 
the cell. 
Length. —4 mm. 
Habitat. —Bonny. 
Time of capture. —May. 
Observations. —Described from a series of 9’ s and a single 
£ collected by Dr. Annett, and in his collection. It is a 
clearly defined species, with banded abdomen and unbanded 
legs ; the deep chestnut-brown thorax and grey and black head 
and unbanded legs separate it at a glance from all other African 
Stegomyias I have seen, except S. Nigeria , from which it differs 
in thoracic ornamentation, the two parallel pale lines on the 
mesothorax of Nigeria being absent. 
