230 
A Monograph of Culicidae. 
3. Aedes Butleri. n. sp. 
Thorax black, with small, dark, bronzy-black curved scales 
and black bristles. Abdomen black, with basal white lateral 
spots. Legs black; femora whitish beneath and at the base. 
Ungues of 9 equal, the fore and mid underrated at the base; 
the hind ones equal and simple. Wings short, dusky, with dense 
dusky-brown fringe. 
? . Head black, covered with flat black scales (which have 
a dull bluish tinge under the microscope), some brownish ones 
behind, and with a thin row of white ones in the middle, a small 
spot of white scales on each side, and a very thin white border 
to the eyes ; antennae brown, basal joint deep testaceous-brown, 
base of the second joint pale testaceous-brown; palpi short, 
covered with black scales with a purplish reflection ; clypeus 
brown ; proboscis black ; eyes deep purple. 
Thorax black, with small dark bronzy-black curved scales 
scattered over it, and with two rows of black bristles and 
numerous black bristles at the sides, especially over the root of 
the wings; scutellum black, with posterior border of black 
bristles and black scales; metanotum very dark brown; pleurae 
dark umber-brown to black, with four patches of white scales. 
Abdomen black scaled, w T ith basal white lateral spots to each 
segment. 
Legs black, femora whitish beneath and at the base, knee 
spot small, white ; ungues equal, the fore and mid toothed at the 
base, hind simple. 
Wings short, slightly dusky, with dusky-brown scales and 
with a dense deep brown fringe; first sub-marginal cell much 
longer and a little narrower than the widest part of the second 
posterior cell, its stem equal to half the length of the cell, 
second posterior cell broadening out from the base, much shorter 
than the former, its base nearer the apex of the wing and its 
stem longer than the cell; posterior cross-vein twice its own 
length distant from the mid cross-vein ; upper branch of the 
fifth long vein reaches the wing nearer the tip than the sub-costal 
does the costal. 
Halteres with pale stem and dusky knob. 
Length. —3-5 to 4 mm. 
Habitat .—Selangor (A. L. Butler) (28. 10. 1899). 
Time of capture .—September and November. 
Observations. —Mr. Butler says this species is very common 
