IQIO. | N. ANNANDALE: A new genus of Psychodide. 143 
longitudinal vein approximating to the stem of the second, the 
two branches of which arise close together, the second fork being 
practically opposite the anterior fork of the fourth longitudinal 
vein ; the bases of the second and third and of the fifth and sixth 
longitudinal veins united ; the third vein reaching the margin at a 
point posterior to the tip of the wing; the fourth nearly straight ; 
the sixth almost as long as the fifth. 
Abdomen covered with bristling hairs; thorax covered with 
similar hairs mixed with scales; front bearing a dense tuft of 
semi-erect scales. 
The male genitalia can now be described in detail, for it has 
been possible to examine specimens preserved in spirit: to give a 
satisfactory account of their structure from dried specimens is 
very difficult. The arrangement of the appendages, etc., is 
clearly shown in the text figure, which is drawn from a specimen 
mounted in canada balsam. A represents the supergenital plate 
(last abdominal tergite), which is thin and membranous, trans- 
verse, subtriangular, with the apex slightly emarginate. At 
either side it becomes chitinized and bending downwards and 
inwards gives rise to a very stout cheta (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, how- 
ever, 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 
appendage 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 (fig. 17, pl. xii) 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 Phlebotomus, of a pair of narrow flattened chitinous 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. 
The original specimens were taken at an altitude of about 
5,000 feet at Kurseong during the ‘‘ rains’’ (July) on a window- 
pane and on the upper surface of a fern-frond. They rested with 
the wings spread out quite flat. I have recently (June, IgIo) 
taken other specimens at the same place. They were running 
erratically on the leaves of Caladium in dense jungle at dusk. 
