254 
A Monograph of Culicidae. 
joint on the outside bright testaceous, dark on the inside, second 
joint also testaceous, but darker; palpi testaceous, covered with 
steely-black scales, the testaceous colour shows through at their 
base ; proboscis metallic purple in some lights with creamy scales 
just at the base, brown in others. 
Thorax shiny, purplish-brown in front, testaceous behind, 
with scattered, flat, spindle-shaped, bronzy black and yellow 
scales, the dark ones predominating, with three rows of black 
bristles, the median one ending before the bare patch in front of 
the scutellum ; scutellum darker in the middle than at the sides, 
with flat, bronzy scales and black bristles; metanotum pale 
chestnut-brown ; pleurae pale ochraceous-brown with numerous 
white scales. Abdomen when denuded steel-blue, covered with 
bright metallic purple scales, the first segment ochraceous with 
two patches of deep purple scales and golden bristles; posterior 
borders with golden hairs ; laterally are triangular basal patches 
of creamy scales on each segment; venter nearly covered with 
yellow scales. 
Legs covered with dark brownish-black scales, with metallic 
steely and purplish reflections, knee spots white, bases and venter 
of femora yellowish, last tarsal joint of the hind legs dull white. 
Wings with a slight brownish tinge, scales brown, lateral 
ones moderately long and narrow ; first sub-marginal cell very 
little longer and narrower than the second posterior cell, its 
stem equal to nearly half the length of the cell; stem of the 
second posterior cell nearly the same length and about as long 
as the cell; posterior cross-vein distant a little more than half its 
own length from the mid cross-vein. 
Halteres with pale stem and fuscous knob. 
Length. —5 mm. 
Habitat. —Castries, St. Lucia (St. George Gray) (19. 7. 99); 
Argentina (Arribalzaga). 
Time of capture .—August in St. Lucia. 
Observations .—Described from a single female sent by Dr. 
St. George Gray, with note that it was taken at 7 p.m. in the 
Botanic Gardens, Castries. 
It is evidently Wiedemann’s Culex posticatus described from 
Mexico, and may be told from the allied C. musicus, Say, by the 
last tarsal joint only being white. 
I cannot see the ungues properly in the single specimen sent, 
but one on each foot is in any case toothed ; they .are probably 
both equal and serrated. 
