Genus Culex. 
105 
Observations .—A very distinct ochraceous-bodied species, with 
markedly characteristic abdominal, wing, and leg ornamentation. 
It might be mistaken at first sight for a denuded G. ypijpiens , as 
far as the general appearance goes. 
The description is drawn up from a specimen in perfect con¬ 
dition. The species is evidently subject to some variation; the 
position of the posterior cross-vein varies to no little extent. 
In old denuded specimens the scales on the thorax look partly 
silvery and partly golden under the microscope, some evidently 
fading after a time in the living gnat. The species is common 
in Mashonaland, a considerable series of females having been 
sent by Mr. Marshall, but I have been unable to detect a 
single male. 
98. Culex trilineatus. n. sp. 
(Fig. 105, PI. XXVII.) 
Thorax bright chestnut-brown, with a median paler scaled 
line and a still paler creamy line on each side, the space between 
the three lines forming two broad darker lines. Abdomen densely 
covered with ochraceous scales ubove and with dark scaled sides. 
Legs unbanded, ochraceous basally, dark brown on the tibiae 
and tarsi, knee spot pale ; ungues of 9 equal and uniserrated on 
the fore and mid, simple on the hind legs. 
9 • Head densely clothed with rather long, golden-yellow, 
narrow curved scales and ochraceous upright forked ones ; 
clypeus pale bright ferruginous; proboscis deep yellowish on 
the basal two-thirds, dark brown apically ; palpi yellowish, with 
a few black scales and bristles at the apex, and a ring of them 
near the base; antennae with the basal joint large, orange in 
colour, also the greater part of the second joint, remainder dark 
brown, with black verticillate hairs. 
Thorax chestnut-brown, covered with narrow curved golden- 
brown scales, with three parallel, pale scaled lines, the lateral 
ones being much paler (almost cream coloured) than the median 
one ; the two intervening spaces seem to be darker than the rest 
of the thorax and show as two dark broad parallel lines ; in front 
of the scutellum the scales are rather broader and again paler, 
those at the sides of the mesothorax are also more golden in hue ; 
numerous golden bristles over the roots of the wings, and the 
lateral lines of bristles end in large patches of golden chaetae in 
