HYSTRICHODEXTA. 221 
small cross-vein on the middle of the discal cell ; apical cross-vein slightly concave ; posterior cross-vein 
nearly straight. 
Hab. Costa Rica, Cache (Rogers). 
Two female specimens. 
4. Hystrichodexia contristans, sp. n., . 
Black ; scutellum and sides of the abdomen rufous; apical cross-vein deeply concave. 
Length 10 millim. 
Front much narrowed towards the vertex ; frontal band brownish-black, much broader than the nearly linear 
- whitish lateral portions; face and cheeks cinereous, with brownish-rufous reflections, the cheeks with 
some weak hairs; lower part of the cheeks one fourth shorter than the longitudinal diameter of the eyes ; 
above the vibrisse some shorter bristles, and many bristles at the sides of the oral margin and along the 
lower portion of the head ; posterior orbits of the eyes with a row of long hairs, which are more dense 
behind the ocellar bristles. Antenne half as long as the face, black, the second joint and the base of the 
third showing a tendency to become rufous; the second joint with short bristly hairs and two longer 
bristles ; the third joint one and a half times as long as the second ; arista thickened at the base. Pro- 
boscis shining black, a little longer than the head; palpi brown. Thorax shining black, on the shoulders 
and the anterior margin with some whitish tomentum ; scutellum brownish-rufous, densely clothed with 
erect pile. Abdomen densely haired, black, laterally over its whole length rufous. Legs black ; front 
femora with regularly arranged long hairs on the upper- and undersides; middle and hind femora with 
long bristles on the underside; all the tibiee outwardly with several bristles; foot-claws and pulvilli 
elongate, the pulvilli fuscous. Tegule dark brown. Wings grey, the base, including the two lower 
basal cells, fuscous ; small cross-vein infuscated, on the middle of the discal cell; curvature of the fourth 
vein somewhat rounded and near to the wing’s margin; apical cross-vein deeply concave ; posterior cross- 
vein slightly curved. . 
Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith). 
A single male specimen. 
5. Hystrichodexia coracina, sp. n., 3 9. 
Black ; thorax anteriorly greyish, with indistinct stripes; abdomen black or piceous; antennz brown, the 
third joint twice as long as the second. 
Length 9°5-12 millim. 
Head grey, with black reflections; front of the male narrowed behind, on the vertex half as broad as the eyes, 
that of the female broader than the eyes; frontal band blackish ; cheeks without any pile, their lower 
portion equalling two-thirds the longitudinal diameter of the eyes ; laterally of the oral margin and along 
the lower part of the head are many bristles. Antenne inserted below a line drawn through the centre 
of the eyes, descending to half the face, blackish-brown, the basal joints showing a tendency to become 
rufous; second joint somewhat prominent, with short hairs and a longer bristle ; third joint twice as long as 
the second ; arista thickened in its proximal half, the plumosity shorter than in the preceding species, absent 
at the base, but continued to the extreme tip. Proboscis one and a half times as long as the head, black, 
brownish at the base and on the terminal lips; palpi filiform, black with a rufous tip, or almost wholly 
rufous. Thorax black, anteriorly with a whitish-grey tomentum and obsolete black stripes; scutellum 
piceous or dark rufous, densely beset with erect hairs. Abdomen broadly ovate, black or piceous, densely 
beset with black hairs and macrochete. Legs black, the tibie piceous; the front femora on the upper- 
and undersides, and the middle and hind femora on the underside, with many bristles ; tibize with scattered 
bristles ; foot-claws and pulvilli elongate in the male, the pulvilli pale yellow. Tegule blackish. Wings 
with a brownish-grey tint, slightly infuscated at the base ; small cross-vein on the middle of the discal 
