[ 8g ] 
.ppear purple with a pale silvery orbital margin or again the central only 
nay appear purple the lateral areas then appearing of a silvery-brown. 
Jnder a 2/3 in a good light there is a central triangular area of pale 
)lack scales surrounded at the sides and behind with silvery-brown scales; 
>n the nape these scales become darker and here are inserted a few rows of 
lark brown upright forked scales and there are a few golden upright forked 
cales immediately behind the orbital bristles. Vertical and orbital bristles 
>rown in a good light pale brown. In a poor light the lateral brown scales 
m the head shew no silvery lustre. In most of my dried specimens, the 
icales on the orbital margin are silvery-white and all the rest are light 
)rown there being no appearance of the black scales. On comparing a 
resh with a dried specimen there is a very great difference noticeable the 
rnrple predominating in the fresh the brown in the dried. Basal joint of an- 
enna black without scales, remaining joints black at the base colourless at 
he apex ; plumes purple-brown with pale tips. Palpi as long as the probos- 
:is clad with purple-black scales two last joints hairy. Proboscis slightly 
mlarged apically, clad with purple-black scales. 
Thorax .—Prothoracic lobes with some dark brown bristles inserted on 
:he superior surface and a patch of broad white scales on the upper part of 
:he outer face. Mesonotum with the anterior half covered with long silky 
Dearly-white narrow curved scales which are imbricated and have the 
ippearance of the scales on a fish, behind these the scales are purple-black 
with two patches light yellowish-brown scales placed one on either side 
mmediately behind the bare patch on the scutellum between the central 
md lateral lobe. In the dry specimen the purple scales may fade and 
Decome light brown and in one specimen there are some white scales in 
:he middle line in front of the scutellum. Scutellum black, central and 
ateral lobes clad with three patches of broad flat scales with truncated 
mds light yellowish-brown in colour with one or two pale black scales 
nterspread ; scutellar bristles pale yellowish-brown. \\ ings more lightly 
scaled as is usual in the male. Legs as in the female. Fore and mid 
jngues unequal larger claw uni-serrate. 
Abdomen .—Lateral spots smaller and more triangular. 
Occurrence .—Described from a series some of which were bred from 
arvae found in the water in cut bamboos, the others, adults, caught in the 
jungle. 
Remarks .—-Entirely sylvan though appearing in houses close to jungle. 
It is a fairly common mosquito and a vicious biter. Easily recognised by 
:he thoracic ornamentation which is quite unlike any other Malayan species 
except S. Imitator, but the latter has four patches of white on the 
■nesonotum and not two as in Nivea. 
* * • t 
Stegomyia Imitator, n. sp. 
Head with diamond-shaped silvery patch on the vertex, white lateral 
bands and brown scales elsewhere, which scales in some lights show 
bronze-green and purple tints. Anterior fourth of mesonotum clad with 
silvery scales and a transverse bar of silvery scales on either side in front 
Df the wings and metallic-bronze scales over the rest of its surface. 
