250 



emarginate. At either side it becomes chitinized and bending 

 downwards and inwards gives rise to a very stout chaeta(E), which 

 bends outwards and slightly downwards. This structure does not 

 appear to be homologous with any in the genitalia of Phlebotomus, 

 Psychoda, or Pericoma. On either side, at a lower level, however, 

 there is an appendage (C) evidently homologous with the superior 

 appendage of these genera. It consists of two joints, the proximal 

 of which is stout in form and somewhat conical, while the distal 

 joint is flattened and membranous, its sides being sinuous and its 

 tip truncate or very broadly rounded. There are three or four 

 short sensory hairs at the tip, but otherwise the appendag-e is 

 naked ; its integument is thin. The subgenital plate (B) projects 

 as a narrow triangle ; its integument is rather thick and bears a 

 minute pubescence. The inferior appendages (D) are borne at the 

 base of the subgenital plate. In the dried specimen they appear 

 to be short and rounded, but they are actually elongate and 

 pointed, with the tips curved upwards and forwards. They bear 

 numerous long hairs and spatulate spinules, each of which has a 

 fringe of minute spines round its flattened extremity. These 

 spines are all turned inwards towards one surface of the spinule. 

 The intromittent organ (F) consists, as in PMebotomus, of a pair 

 of narrow flattened chitiuous valves closely pressed together, the 

 fissure between them being vertical, with a pair of delicate chitinous 

 filaments that can be thrust out between them. The form of the 

 organ in this species is narrowly conical " (Annandale). Wings 

 shaped ^somewhat like a diamond with rounded corners. The 



Fig. 35. Bruncttia supcrstes, Ann., wing. 



length of the wing is to its greatest breadth as 4 to 3. The 

 surface of the wing covered with overlapping spatulate scales, 

 which are narrower near the margins than at the middle and base 

 of the wing. The veins clothed with a double row of divaricate 

 hairs ; costal fringe of hairs especially long on posterior margin 

 and towards the base, where there is a flat tuft of very long silky 

 black hairs. 



