32 A Monograph of Culicidae. 
variation in the different specimens I have examined. Some 
have the basal abdominal bands almost yellow, and lateral 
patches pure white, and the scutellar scales almost silvery in 
three distinct patches, and the white leg band not so wide. In 
others the basal white abdominal bands are slightly thickened 
in the middle, and the tibial bands more distinct, and the black 
scales on the head not so prominent. When the abdomen is 
swollen with blood or eggs the venter is dull yellow. Although 
there is evident variation the species can always be told by the 
single white band on the legs, especially clearly seen on the hind 
pair. The Singapore specimens came from Bukit Tiniah, and 
were taken inside a house; those from Natal also were taken 
indoors. It seems to be a common Mashonaland species, 
Marshall sending a good series. It bites viciously. There are 
some closely related species. 
64. CULEX QUASIUNIVITTATUS. n. Sp. 
Thorax dark brown, covered with narrow curved deep red- 
brown to bronzy scales and two median lines of creamy scales in 
front, and a small indistinct patch on each side of the meso- 
notum ; scales over the roots of the wings, and in front of the 
scutellum white. Abdomen black, with basal white bands and 
large basal white lateral spots. Legs dark brown, apices of the 
femora and tibiae broadly yellowish-white. Ungues of the 9 
equal, uniserrated in fore and mid legs, simple in the hind legs. 
9. Head dark brown, with some small curved reddish- 
brown scales in the middle in front; occiput .with narrow 
curved pale creamy scales, sides with a large patch of black 
flat scales, then flat creamy ones; a few black upright forked 
scales and some golden bristles projecting in 
front; antennae dark brown, basal joint dark 
brown, with white or creamy scales, base of 
the second joint testaceous; palpi covered 
with jet-black scales ; proboscis dark brown ; 
eyes black, with a silvery lustre. 
univfttatusA nTsp^c?). Thorax dark brown, covered with dark 
bronzy-brown narrow hair-like, curved scales, 
with two rather indistinct parallel median lines of creamy scales 
in front of the mesonotum, an indistinct patch on each side, and 
two lateral patches of broader and almost white ones laterally, 
one just in front of the wings; there are also a few narrow 
