294 
A Monograph of Culicidae. 
Legs very pallid, with nine brown bands on the femora and 
seven on the tibiae; remainder pallid. 
Wings with the veins creamy-white, covered with long hair¬ 
like scales; the cross-veins brown. 
Halteres pallid white. 
Length. —4*5 mm. 
Habitat. —Europe generally. 
Observations. —Redescribed from a male in Mr. Yerrall’s 
collection. The female is slightly smaller than the male, but 
otherwise very similar. It is a very distinct and delicate insect. 
Apparently not a common species. 
3. Corethra flavicans. Meigen. 
(Syst. Beschr. p. 248 (1818).) 
Meigen describes this species as :— 
“ Yellow, with the sides of the thorax whitish; clear yellow, almost 
sulphur yellow on the hairs of the antennae and legs. 
“ Length —of d 2| lines. 
“ Habitat. —Germany.” 
Col. Giles * describes a specimen of this species in the 
collection at the Jardin des Plantes, labelled by Meigen, and 
states that the eyes, antennae, and palpi are all black, the 
thorax mainly chestnut-brown, with a fine median white line and 
two large round lateral snowy spots. Abdomen pale ferruginous, 
the fore borders of the segments being darker. Legs pale 
ferruginous, unadorned. Wings pale iridescent yellow, veins 
of the same colour; both fork-cells long and narrow, the first 
sub-marginal slightly the longer, their bases nearly opposite; 
stems of the fork-cells short and of equal length. 
4. Corethra Asiatica. Giles. 
{Entomologist, July, p. 196, 1901.) 
Of a pale straw colour. Thorax with a median dark brown 
line, broad in front, narrowing behind, and two lateral dark 
brown patches behind on the mesonotum, separated by black 
specks. Abdomen straw-coloured, with dusky specks laterally, 
and darker at the base. Legs stout, pale, darker towards their 
apices. Posterior cross-vein a little behind the mid cross-vein. 
* “ Handbook of Gnats,” p. 362. 
