Genus Culex. 197 
numerous long bristles over the roots of the wings and at the 
sides ; the paler ornamentation is as follows: Pale scales between 
the two bare lines in front, and around the front of the meso- 
thorax ; two round irregular spot-like patches about the middle 
of the mesonotum, extending backwards as two lines; a pale 
patch over the root of the wings, and other pale scales at the 
sides of the mesothorax, and also around the bare space in front of 
the scutellum. Scutellum testaceous, brown at the sides, with 
pale narrow-curved scales, with apparently seven (1) very long 
brown median bristles ; metanotum dark brown; pleurae brown, 
with patches of dull white scales. 
Abdomen blackish-brown, with violet reflections, the first 
segment dark, the second to fourth (only) with traces of basal pale 
banding, all the segments with basal white lateral spots, which 
show on the dorsum of the last two segments ; posterior border- 
bristles very pale, apex of abdomen bristly ; venter with distinct 
grey basal bands. 
Legs deep brown, bases and venter of femora grey, a small 
pale knee spot; ungues of the fore and mid legs equal, uni- 
serrated, rather small, of the hind legs equal, curved and simple. 
Wings with the veins covered with typical brown Culex 
scales, venation much as in Culex pipiens ; the first sub-marginal 
cell being considerably longer and narrower than the second 
posterior cell, its stem very short, about one-sixth the length of 
the cell or less ; stem of the second posterior about two-thirds the 
length of the cell ; posterior cross-vein about twice its own length 
distant from the mid; the first, third, and fifth veins darker 
scaled than the rest. 
Halteres with dull grey stem and slightly fuscous knob. 
Length.—5°5 mm. . 
6. Thorax as in the female. Abdomen with distinct basal 
white bands, which spread out laterally on the penultimate and 
antepenultimate segments. Palpi thin, acuminate, longer than 
the proboscis, dark brown, with a narrow pale band on the basal 
half of the antepenultimate joint , the apical joint about the 
same length as the penultimate, both with scanty long black 
hairs, also the apex of the antepenultimate on one side ; proboscis 
dark brown; antennae banded brown and white; plume-hairs 
dark brown; ungues of the fore and mid legs unequal, uni- 
serrated, of the hind small, equal and simple. 
Length.—4°8 mm. 
Habitat.—Brazil (Dr. Lutz). 
