Aitopheles listoni. 



another at the junction between the fourth and third, and a third at 

 the joint between the third and second segments. 



The proboscis is brown with a yellowish- white tip. The head 

 is covered with the usual dark brown and white upright scales, and 

 there is a frontal tuft of hairs 



The thorax is covered with white hair-like scales, and yellowish 

 hairs, inserted on a dark black background. 



The scales and hairs are so arranged as to show a median, and 

 two less distinct, lateral, longitudinal darker lines. The lateral 

 aspects of the meso-thorax are of a black colour. 



The abdomen is of a dark black colour and is covered with 

 numerous long yellowish-white hairs. 



The wings are covered with long spindle-shaped scales. 



The costa has four yellowish-white areas. The smallest of 

 these is situated at the apex of the wing ; the others increase in 

 size from this point inwards. 



The first long vein has four light-scaled areas corresponding 

 with the four light-scaled areas of the costa, but in addition there 

 is a larger white-scaled portion at its inner extremity. 



The second long vein shows three small white-scaled areas, the 

 outermost is situated at the bifurcation of the vein and in part in- 

 volves both branches. The other two are situated at the position 

 of the transverse veins. 



The third long vein, in contrast to the other veins, is for the 

 most part light-scaled, but has two small dark-scaled areas towards 

 its inner extremity, and one dark-scaled portion at its outer end. 



The fourth long vein is for the most part dark-scaled, except 

 for a short distance at its inner extremity, where it is light-scaled, 

 and for a few light scales at the transverse veins, and at its bifur- 

 cation. 



The fifth long vein is white for most of its inner portion, ex- 

 cept for a small dark-scaled spot towards its inner end. This vein is 

 black-scaled at its division into branches. The anterior branch is 

 dark throughout, except for a few light scales at the transverse vein 

 and at its outer extremity. The posterior branch has a short white- 

 scaled portion shortly after it leaves the parent trunk, and has a 

 few light scales at its distal end. The remainder of this branch is 

 dark-scaled. 

 104] 



