50 
A Monograph of Culicidae. 
that of the second posterior, its stem a little less than half the 
length of the cell, about equal in length to that of the second 
posterior cell, the latter cell nearly twice the length of its stem ; 
posterior cross-vein about three times its own length distant 
from the mid cross-vein. 
Halteres with a pale stem, fuscous along one side, and with a 
fuscous knob with some dusky-grey scales over it. 
Length. —5*5 to 6-5 mm. 
$ . Head black, with white curved scales in the middle (in 
front), w T ith a central bare line, with black and ochraceous upright 
forked scales on the occiput and nape, the sides clothed with 
white, a few ochraceous, then black, and then a few more white 
flat scales; antennae banded brown and white, the last two 
joints long and darker, plumes chestnut brown ; palpi black, the 
last three joints with narrow, basal, dull white rings, hair-tufts 
brown, a few long golden bristles at the apex of the last two 
joints; proboscis black. Thorax as in the ? . Abdomen nar- 
Fig. 172. 
Wing of Culex pulcriventer, 
Fig. 171. , 
Wing of 9 Culex pulcriventer, Giles. (X. 9.) 
Ui. tc t i vti 
Giles (cT). (X. 9.) 
rower, densely covered with long golden hairs, the basal silvery- 
white marks on the segments are more distinct, and may unite 
in the middle to form an almost complete band. Ungues of the 
fore and mid legs unequal, the larger one with two and the 
smaller with one tooth ; hind claws equal and simple. 
Wings with the first sub-marginal cell longer and narrower 
than the second posterior cell, its stem equal to a little more 
than two-thirds the length of the cell, its base about level with 
that of the second posterior cell; stem of the second posterior 
longer than the cell; posterior cross-vein longer than the mid 
cross-vein, distant from it more than twice its own length. 
Length .—5 to 5 • 5 mm. 
Habitat .—Nairn Tal, India (Giles). 
Time of appearance. —June. 
Observations. —Lt.-Col. Giles sent me this species. 
It is very distinct and can at once be identified by the 
thoracic ornamentation and the pure creamy-white colour of 
the basal half of the lower side of the femora. The scales of the 
