Genus Culex. 
369 
longer than the proboscis by the last and apical portion of the 
penultimate segment, the last two segments with scanty, long, 
Fig. 162. 
Male genitalia of Culex nigrocostalis . n. sp. 
dark hairs. Ungues of fore and mid legs unequal, uniserrate, 
hind equal and simple. Wings with short fork-cells, the first 
slightly narrower and much longer 
than the second fork-cell, stem 
of the first about three-fourths the 
length of the cell, stem of the 
latter nearly as long as the cell ; 
posterior cross-vein longer than 
the mid, nearly three times its own 
length distant from it. 
Length .—4 mm. 
Habitat .—Accra (Dr. Graham). 
Hatched out. —7 and 18. vi. 08 
(<f), 7. vii. 08 (?). 
Observations .—Described from 
a single perfect 9 > hatched from 
a long siphoned larva, and three 
£ ’s. This is a small, rather 
obscure Culex , near C. fatigans, 
Wied., and C. pallidocephala , 
Theob., but can he told from both by the very dark outer costal 
border and veins near it. A smalhfragile species. 
Type in the British Museum. 
vol. v. '2 b 
Fig. 163. 
Culex nigrocostalis . n. sp. 
6 genitalia; the clasper shortened, 
but showing natural position of sub- 
apical spine and bristle. 
