3G2 
-4 Monograph of Culicidae. 
Observations. —I do not feel certain as to whether this 
mosquito from the Straits Settlements is distinct from those from 
India that I have called C. rnicroannulatus, but the absence of 
leg banding in the hind legs at once separates it; more especially 
will be noticed that the base of the first sub-marginal cell is 
much nearer the base of the wing than in that species. In this 
respect it resembles Culex Vishnui , but the latter is much paler 
and has distinct leg banding to the hind tarsi, and the abdominal 
banding is both apical and basal. 
This must be Wiedemann s C. sitiens, described from Sumatra. 
With the exception that the hind legs are unhanded, this species 
applies very well to Wiedemann’s description, and as the next 
species answers to the other banded-proboscis form from this 
region, namely C. impellens, Wlk., I retain Wiedemann’s name 
for this species, in which the bases of the fork cells are not level. 
W iedemann’s specimen was very defective. His description is 
as follows :—-. 
“ Black, with proboscis and abdomen and legs with bands of 
white. Length 2^ lines. Colour of the body brownish-black ; 
under side of the head and extreme tarsi yellowish ; proboscis 
with a clear yellowish-white band a little beyond the middle. 
On the thorax there appear in certain lights two thick, brighter 
stripes lying together. Bands on the abdomen very clear, on 
the venter they are closely united and more distinct. Wings 
with brownish-black scales ; femora with yellowish appearance; 
knees and all the other articulations white.” 
Giles is not correct, I fancy, in placing either Williston’s 
banded-proboscis form or Walker’s C. impellens as synonyms. 
The next species is Walker’s C. impetlens. 
16. Culex impellens. Walker. 
(Pioc. Linn. Soc. Lend. iv. 91.) 
Thorax dark brown, covered with pale golden curved scales. 
Abdomen covered with dusky-brown scales and with basal white 
bands. Legs brown, the mid and hind legs with a pale band 
involving the tibio-metatarsal joint ; tarsal banding basal. 
Bases of the fork-cells nearly level. 
9 . Head with creamy curved scales in front and a patch of 
fiat white scales at the sides, ochraceous forked upright scales 
in front, with similarly shaped black ones behind, especially 
