Genus Aedes. 



541 



Halteres with pale stem and fuscous knob. 



Length.-— 2 • 5 to 3 mm. 



$ . Palpi very short and thin with brown scales, but much 

 longer than in the 9 ) antennae with white internodes and brown 

 verticels, brown plume-hairs. Thorax and abdomen as in the J . 

 Ungues of the fore legs unequal, both uniserrate ; of the mid 

 unequal, much curved, simple ; hind equal and simple. 



Wings with short fork-cells, the first sub-marginal longer and 

 narrower than the second posterior cell, its base nearer the base 

 of the wing, its stem equal to rather more than half the length 

 of the cell ; stem of the second posterior cell nearly as long as 

 the mid ; posterior cross-vein longer than the mid, about one and a 



Fig. 247. 

 Male genitalia of Aedes nigrescens. n. sp. 



half times its own length distant from it, scales of a more uniform 

 shape than in the female ; genitalia with rather small broad basal 

 lobes, broadest basally ; claspers broad, forked, one branch longer 

 than the other, which is the apex of the clasp ending bluntly and 

 with a small segment at right angles to it. The lateral process 

 of basal lobe with a large leaf -like plate, curved and narrowed 

 apically and two unequal-sized small plates and a bristle. 



Length. — 3 mm. 



Habitat. — Castle Rock, India (Capt. James, I. M.S.). 



Time of capture. — January, February, and March. 



Observations. — A very small, obscure species looking like a 

 Melanoconion, but the wing scales are longer and the very marked 

 short (J palpi and genitalia at once preclude it. It is a true 



