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Wings with the veins covered with dark brown scales, some of 
which are moderately long ; first sub-marginal cell longer and 
narrower than the second posterior cell, its stem equal to a little 
more than half its length ; that of the second posterior cell not 
quite equal to the length of the cell ; posterior cross-vein nearly 
twice its own length distant from the mid cross-vein. Halteres 
with ochraceous stem and pale fuscous knob, sometimes all 
ochraceous. 
Length, 5 to 5.5 mm. 
$ . Antennae light brown, with pale silky brown plumes, 
basal joint black ; palpi dark brown, with two broad, basal white 
bands on the second and third joints, and with white ones also 
to the last two, hairs dark brown, gold and yellowish ; abdominal 
segments with white basal bands, the last segment often with 
two white spots ; claspers black ; laterally there are numerous 
golden hairs, which also occur along the posterior borders of the 
segments. Fore ungues unequal, the larger uniserrated, the 
smaller simple. 
Length, 5, to 5.5 mm. 
This mosquito is occasionally found breeding in wells in 
Southern Queensland ; only rarely bites ; looks like Culex vigilax, 
but when critically examined under the microscope it is seen to 
be distinct ; will live in confinement and oviposit ; the eggs are 
laid singly, are long oval in shape, black with a silvery mesh- 
work pattern on them. Every few years, at a particular time, 
fresh water lagoons in the vicinity of Deception Bay are seen to 
harbour millions upon millions of larvae of this species ; directly 
the mosquitoes emerge, they fly off to the South ; it is a plentiful 
and biting insect in the Southern States. 
Culex rubithorax. — Macquart (1850). 
? . Head black, with a narrow border of thin golden curved 
scales around the eyes, then a broad band of black flat scales, 
then golden curved ones behind, and a few flat creamy ones at the 
sides, some golden curved ones also forming a central mass towards 
the eyes, with dark and golden-brown upright forked scales ; 
eyes silvery ; antenae dark brown, basal joint and base of second 
joint ochraceous ; palpi testaceous at the base, black at the top, 
with black scales ; proboscis black, the apex and base and down 
the centre and sides of the mid region with ochraceous and brown 
scales ; clypeus dark brown. Thorax bright chestnut-brown, 
with scattered golden curved scales, with four double rows of 
brown bristles ; scutellum chestnut-brown, with golden scales 
and brown bristles ; metatonum chestnut-brown, with a purplish 
patch on each corner of the base ; pleurae chestnut-brown, with 
patches of white scales ; prothoracic lobes with flat black scales 
and black bristles. Abdomen clothed with dusky, purplish-black 
scales, each segment with a narrow basal band of creamy-white 
and with white lateral spots, the last segment unmarked, the two 
