Dipterous Insect from Kashmir. 385 
hind tarsal segment not a quarter as long as the tibia and 
scarcely as long as the two following segments together. 
The tibize show no trace of apical spurs. The articulations 
of the tarsal segments are oblique, and there is a rather 
extensive membrane between most of the segments. The 
fifth tarsal segment on all the legs is somewhat enlarged 
apically, and bears a very large, nearly circular, hairy 
empodium. There is a single rather long and slender, 
simple, straight, and pointed claw, the second claw being 
apparently represented by a minute blunt prominence *. 
Wings extremely large for the size of the insect, very 
broad, with a conspicuous anal lobe. There are no macro- 
trichia on any part of the surface, not even on the costal 
margin, but there is a rather long and delicate fringe round 
the anal lobe, and the whole membrane is covered with short 
microtrichia. The costal margin is only slightly thickened, 
and not any darker than the rest of the wing. There are 
also very slight thickenings of the membrane faintly indi- 
cating some of the veins, the most distinct being Se and R,, the 
former of these apparently terminating in the latter at about 
the middle of the length of the wing. More distinct than 
these vestiges of the true veins is the ‘‘ secondary venation.” 
This is quite obvious when the wing is in formalin, and on 
a wing being removed and mounted dry it became so con- 
spicuous as to appear like a true venation. Were it actually 
so, the insect could hardly be included among the Diptera +. 
Close examination, however, shows that practically all the 
lines are produced merely by creases in the wing, there being 
very little trace of true veins. When a wing is mounted in 
balsam, the “ secondary venation ” almost entirely disappears 
and the traces of true veins referred to above become more 
apparent. The two photographs given will indicate the 
arrangement of the vein-vestiges and of the secondary folds. 
The latter are arranged in a fan-like manner, somewhat 
suggestive of the hind wing of an earwig. Besides the 
radiating folds there are three concentric lines across the 
field of the wing, besides two short transverse lines in the 
* It is just possible that the organ regarded as an empodium represents 
the second claw. Compare the Blepharocerid genus Hapalothrix, in 
which both claws are large and pulvilliform. 
+ The only insects which have a venation even faintly resembling this 
are Mayflies of the genus Cenzs and allied forms, which also, like our 
insect, have no mouth-parts or hind wings and even a somewhat 
similarly shaped head. A cursory examination, however, soon shows 
that these are the only resemblances between the two groups—the May- 
flies, for example, having very differently constructed thorax and legs and 
no halteres. 
