Genus Culex . 
141 
Wings with the veins covered with brown scales, the lateral 
ones long and thin and present on all the veins except the fifth 
long vein and its inner branch; the first sub marginal cell is 
longer and narrower than the second 
posterior cell, its base a little nearer 
the base of the wing than that of the 
latter, its stem very short, a little more 
than half the length of that of the Culex nigrituius, Zett. (?). 
second posterior; posterior cross-vein 
rather more than its own length distant from the mid cross¬ 
vein ; halteres pale, the knob covered wdth pale creamy scales. 
Length. —3*5 to 4 mm., with proboscis 5'5 to 6 mm. 
£ . Head black, with long curved yellowish scales, ochraceous 
upright forked ones behind and white flat ones at the sides; 
palpi longer than the proboscis, brown, a small white apical band 
on the penultimate joint and another pale band towards the 
base; hair tufts dark brown; proboscis dark brown, expanded 
Fig. 228. 
Culex nigrituius , Zett. 
Fig. 229. 
Culex nigrituius , Zett. (d*). 
(X. 9.) 
at the tip; antennae banded black and white, plume-hairs flaxen 
at the base and black apically, entirely black in some lights. 
TJngues of the fore and mid legs unequal, all uniserrated; in 
the hind legs small, equal and simple. 
Length. —3*5 to 4*5 mm. 
Habitat .—Scandinavia (Zetterstedt) ; England (F. Y. T.). 
Time of appearance .—July in England. 
Observations .—This is one of the smallest of our European 
mosquitoes, and looks very distinct from 0. pipiens, but when one 
comes to examine them, however, the structural differences seem 
very slight. The abdominal banding is not nearly so distinct as 
it is in 0. pipiens, and the gnats are much smaller and more 
delicate. Moreover, one never sees these small Galices in the 
house, but I have taken them in great numbers in and over half- 
filled water-butts. I can detect no difference in the $ ungues 
or any important structural detail from G. pipiens , yet it is 
quite distinct in appearance and habits. 
