CUL1CID FAUNA OF THE ADEN HINTERLAND, 631 



Thorax dark brown and when denuded of its scales there are three black lines, 

 one central and two lateral. Jt is covered with brown curved scales with many 

 bristles. Prothoracic lobes are dark with bristles and narrow curved scales. 

 Scutellum has a row of black bristles on upper surface with a few light curved 

 scales scattered about. Metanotum dark with a black line down the centre. 



Abdomen is brown with some light patches, there are no scales but many 

 long dark bristles. 



Legs are brown with pale areas at all the joints. Fore-legs, the femur are 

 lightly scaled at upper end, the remaining segments are densely scaled. 



Wing. — Costa (Fig. 15) has six black spots and three subcostal. The 1st long vein 

 has five spots, sometimes the small central spot is absent. The 2nd vien has three 

 spots on the main stem, two on the upper and two on the lower branch. The 

 3rd vein has three, sometimes two spots. The 4th has two long black spots on 

 the stem, two on the upper and one on the lower branch. The 5th vein has one 

 spot on its main stem, three on the upper and two on the lower branch. The 

 6th vein has three black spots. The wing fringe is dark with pale areas at the 

 termination of all the veins except the 6th. 



Male. — The cephalic ornamentation is the same as in the female ; antennas dark 

 and plumose. Palpi (Fig. 14) have four white bands as in the female, the basal 

 band is sometimes absent. 



Thorax lighter brown, but has the same scale ornamentation as in the female. 

 Legs are marked the same as in the female. 



Abdomen light brown and is covered with light brown hairs. The wing has 

 the same markings as in the female. 



Larva is a large one, the head is black and much ornamented. Thorax dark 

 brown, abdomen greenish, fading away to a light brown. Antenna? have no 

 spine on the outer side. Frontal hairs are single and unbranched. Palmate 

 hairs present on the 3rd to 7th segments, inclusive with modified hairs on the 

 2nd segment. Blade (Fig. 16) long and almost black with light patches at sides, 

 shoulder on both sides has many serrations, the filament is long and pointed. 



Egg — -52 mm. in length and '15 mm. There is no distinct upper surface, no 

 floats and no frill (Fig. 17). The only resemblance that it has to an anopheles egg 

 is, that it is boat-shaped. Each egg is covered with a thin pellicle which easily 

 breaks off. These eggs were found in a spring near D'thala where the larva? of this 

 mosquito were breeding. They were found on some green matter and were all 

 in a little heap. There was no difficulty in hatching out the larvae, even though 

 many of the eggs sank. 



I instructed my Hospital Assistant, who was on duty at Hardeba, when I 

 first found these eggs to try and obtain some eggs of Tcmiorhynchus tenax 

 from the spring. I gave him a careful description of the eggs and he sent up 

 what he thought was an egg raft of T. tenax. They, however, turned out to be 

 those of this anopheles, they were packed on moist wool and weeds. Most of 

 the eggs sank on attempting to float them. I was surprised after 2£ days to find 

 that most had hatched out. The larva? were reared and developed into the 



