372 Bulletin de la Société Royale Entomologique d'Egypte 
tufts not more than one and a half times the 
diameter of the siphon . 19 
19. The tufts very short, not more than one half 
the diameter of the siphon. 
. Gulex laurenti, Newst. 
Some tufts at least as long as the diameter of the 
siphon . 20 
20. Mid post-antennal hairs single or double, the in¬ 
ner ones single . Culex sinaiticus, n.sp. 
Mid post-antennal hairs usually double, the inner 
pair triple . 21 
2T. Antennal tuft at two thirds, one pair of lateral si- 
phonal tufts .. Culex tritaeniorhynchus , Giles. 
Antennal tuft beyond two thirds, two pairs of 
lateral si phonal tufts .. Culex per exiguus, Theo. 
Description of the new siibgenus and the three new species 
of CULEX referred to in the foregoing tables. 
LASIOSIPHON, sub-gen. nov. 
Adult : 
Male palpi shorter than the proboscis, the last two 
joints short, not distinctly upturned, and without 
long hairs beneath. 
Proboscis slightly longer than the front femora. 
One strong lower mes-epimeral bristle. 
First joint of hind tarsi slightly shorter than the 
tibiae. 
Small pulvilli present. 
Stalk of the upper fork cell about equal to the 
