376 Mr. F. V. Theobald on 



especially below ; fore and mid ungues unequal and uniserrate, 

 bind equal and simple. 



Wings with rather broad scales on the apex, with rounded 

 tips ; first fork-cell longer and narrower than the second, its 

 base about level with that of the latter, its stem more than 

 half the length of the cell, stem of the second forked cell 

 about the same length and about two-thirds the length of the 

 cell ; posterior cross-vein longer than the mid, about twice 

 its own length distant from it. 



Length. — 2*8 to 3 mm. 



Habitat. — Obuasi (Dr. Graham). 



Time of capture. — 20. viii. 29 and 30. ix. 07. 



(. hservations. — Caught in bush at 10 A.M. and 6 P.M. 



A very obscure species, unless carefully examined, wh?n 

 the peculiar palpi at once separate it. 1 have been unable to 

 distinguish the female in this collection. 



Culex nigrocostalis, sp. n. 



Very like a small C. fatigans or C. pallidocephala, but the 

 thorax uniformly clothed with dull golden brown scales and 

 the outer costal border of the wings very dark. 



? . — Head black, clothed with dull grey ragged narrow- 

 curved scales, small dull grey flat lateral scales, and black 

 upright forked scales ; clypeus deep brown, palpi and pro- 

 boscis deep black; antennae deep biown, with narrow pale 

 bands. 



Thorax deep brown, clothed uniformly with small hair-like 

 curved dull golden brown scales and deep brown cheetse, dull 

 golden at their base ; scutellurn paler brown, with scanty 

 dusky hair-like curved scales, dull golden in some lights, and 

 six deep brown border-bristles to the mid lobe. 



Abdomen blackish brown, with narrow basal white bands 

 and golden brown to golden border-bristles. 



Legs deep blackish brown, unhanded ; femora pale below, 

 a few pale scales at the apices of the femora and tibise ; 

 ungues small, equal, and simple. 



Wings with dark brown scales, the outer costal border and 

 the first long vein and subcostal black ; first fork-cell longer 

 and narrower than the second posterior, its base nearer the 

 base of the wing, its stem less than one-third the length of 

 the cell; stem of the second fork-cell about two-thirds the 

 length of the cell ; posterior cross-vein longer than the mid, 

 sloping backwards, and about two and a half times its own 

 length distant from it. 



Length. — 3 mm. 



