XIV SHORT ACCOUNT OF THE MORE IMPORTANT 
Family Psiiide. | 
Body elongate, with short hairs and almost without bristles. 
Front with only a few bristles in the neighbourhood of the crown, 
no bristles near mouth. Neuration complete; auxiliary vein lies 
close by the first longitudinal vein, but diverges from it at its end and 
runs towards the border of the wing; by a transverse fold, most 
characteristic in this family, running from tip of auxiliary vein as far 
as the base of the third posterior cell, the outward end of the auxiliary 
vein is obliterated. Posterior basal cells large. 
Family Aficropezide. 
Body slender, with short hairs and very few bristles. Neuration of 
veins complete ; first longitudinal vein bare; auxiliary vein is very 
close by it, and diverges from it towards its end only; the two 
posterior basal cells very large. A few bristles on the crown only ; no 
vibrisse on the mouth-border. No bristle on outer side of tibize. 
Family Ortalide. 
Auxiliary vein separated from the first longitudinal and running 
to border of wing in the usual way under an acute angle and re- 
maining perfectly distinct in its whole length; third longitudinal 
vein generally with coarse hairs. Two posterior basal cells large, the 
outward one frequently prolonged in an acute angle. Front with 
bristles on the upper part only. No vibrissze at the border of the 
mouth. Clypeus very much developed. Middle tibiz alone with 
spurs; no bristle on tibiz. Ovipositor of 9? flattened and horny, 
composed of three elongated segments and ending in a simple 
point. 
Family Zrypetide. 
End of auxiliary veins runs steeply to the border of the wing and 
becomes obsolete ; first longitudinal vein always with bristles, the 
third frequently, the fifth sometimes; the hindermost posterior cell 
produced to a point. Front on each side with two rows of bristles, 
one above and placed interiorly, and one below. No vibrissz on 
border of mouth. Clypeus none or rudimentary. Middle tibiz 
only with spurs; no bristle present on tibiz. Ovipositor horny, as 
in preceding family. 
Family Loncheide. 
Auxiliary vein runs to border of the wing in the usual way under 
an acute angle and without becoming obsolete and near to the first 
longitudinal vein ; this vein is bare. Two posterior basal cells small. 
Front at each side with a single row of bristles. No vibrissz. 
