Genus Culex. | 219 
golden-brown hairs ; posterior borders of the segments with short 
deep brown hairs, and the sides of the abdomen with golden- 
brown hairs ; venter almost entirely covered with white scales. 

Fig. 115. 
Culex Sergentii. N. sp. 
a, Cephalic ornamentation ; b, basal segments of abdomen. 
Legs deep brown ; coxae grey, also the base and«venter of the 
femora ; knee spots small, white ; ungues brown, equal and simple. 
Wings with typical deep brown Culex scales ; fork-cells rather 
short, first sub-marginal cell longer and narrower than the 
second posterior cell, its base slightly nearer the base of the 
wing than that of the second posterior cell, its stem not quite 
half the length of the cell; stem of the second posterior cell 
nearly as long as the cell; posterior cross-vein nearly twice 
its own length distant from the mid cross-vein ; the costal, 
first, third, and fifth long veins darker scaled than the rest ; 
border-scales of wing very dark, and sharply contrasted against 
the fringe. 
Halteres with pale stem and brown knob. 
Length.— 4 mm. 
Habitat.— Algeria (Dr. Sergent). 
