240 
A Monograph of Culicidae. 
Thorax deep blackish-brown to deep blue; scutellum and 
metanotum also dark brown; mesonotum covered with brilliant 
green, coppery and violet scales ; pleurae dark brown, with broad 
flat silvery white scales, very brilliant and shiny. 
Abdomen black, covered with brilliant blue and violet flat 
scales; in some lights they look almost black, in others bright 
blue, in others with a violet tinge; the first five segments have 
basal lateral spots of pure white scales, which show as ten white 
spots on the venter as well, and appear more or less as a lateral 
line. 
Legs with the coxae brown, remainder clothed with bright 
metallic blue scales, purple in some lights, dark brown in others ; 
knee spot rather reddish ; hind femora pale golden along the 
basal half of the venter, other femora with a small similar 
coloured spot at their base. 
Wings covered with deep brown scales along the veins, with 
iridescent reflections in certain lights; first sub-marginal cell 
longer and narrower than the second posterior cell, its base 
nearer the base of the wing than that of the latter, its stem 
less than one-half the length of the cell; stem of the second 
posterior as long as its cell; posterior cross-vein about four times 
its own length distant from the mid cross-vein. Halteres with 
ochraceous-brown stem and fuscous knob. 
Length .—5 mm. 
Time of capture. —May. 
Habitat. —St. Vincent (H. Powell) (10. 7. 1899, and 
Williston) ; Brazil (F. V. T.) ; South America (Wiedemann). 
Observations .—This is seen to be a beautiful deep blue species 
when casually examined. Specimens have been received from 
St. Vincent and also from Brazil. Williston states that it is 
found at an elevation of 1000 feet at St. Vincent. The single 
O 
male specimen he took was destroyed in drawing. No males 
have been received at the Museum. Four specimens only 
have been received from St. Vincent, all from the Convent 
Estate. 
This species differs so much from a typical Aedes that 
Williston placed it in a new genus, Haemagogus , on account of 
the five-jointed palpi. 
I have seen no $, but Williston describes it as “ not 
differing from the female ”; the ungues of the fore feet are 
unequal and uniserrated; he also figures the male wing, which 
is here reproduced. 
