1740 
DIPTERA OF AUSTRALIA, 
covered with narrow brown scales, cilia sericeous-grey, brilliant 
violet and purple reflections at a certain obliquity. Auxiliary 
vein joining the costa a short distance before the tip of the 
posterior branch of the fifth longitudinal vein ; middle cross-vein 
equal in length to the posterior cross-vein, situated at a point in front 
of it a distance equal to twice its length, the latter opposite the 
middle of the posterior branch of the fifth longitudinal ; first 
sub-marginal cell narrower and longer than the second posterior 
cell, its base lying opposite the base of the latter ; anterior branch 
of the fifth longitudinal as in the last species. 
Hah. — Sydney, and generally distributed in N.S.W. (Masters 
and Skuse). September to January. 
Ohs . — This is a very elegant and plentiful insect, occasionally 
coming into the house in the day time, and causing more painful 
wounds than any other mosquito known by me to occur in Sydney. 
A small variety is plentiful on the Blue Mountains. From 
December to March water butts and gax'den tanks swarm with 
the larvse in all stages of their existence. In the hot summer 
weather the larvee are hatched from the boat-like mass of (nearly 
three hundred) eggs iix about twenty-four hours, and the perfect 
insects emerge in from three weeks to a month. 
202. CuLEX Bancrofti, sp.n. 
(J. — Length of antennae 0’065 inch ... L66 millimetres. 
Expanse of wings OJOO x 0'023 ... 2’54 x 0'58 
Size of body O'lIO x O'OSO ... 3‘o5x0'76 
Antennae very dark brown, the verticils black, about f the length 
of the palpi; first joint of the scapus black, with silvery-white scales. 
Head deep brown, almost black (when denuded), covered with 
violet-black scales, with a very small patch of silvery-white on 
each side, some white or yellow scales in the middle, and a line of 
silvery-white bordering the eyes. Prolxoscis deep violet-black, as 
long as the palpi. Palpi deep violet-black, the four joints ringed 
at the base with silvery-white, the first two rings much broader than 
