HYPOSTENA. 143 
Hab. Mexico, Amula 6000 feet and Xucumanatlan 7000 feet, both in Guerrero 
(H. H. Smith). 
A male specimen from each locality. 
4, Hypostena elegans, sp. n., ¢. 
Whitish-grey ; frontal band, four thoracic stripes, hind borders and a dorsal stripe on the abdominal segments, 
antenne, and legs black; palpi rufous; abdomen pale ochraceous, laterally and on the underside with 
yellowish hairs. 
Length 10°5 millim. 
Head white, with grey reflections; front prominent, narrowed behind and there not so broad as the eyes ; 
frontal band brownish-black, sometimes rufous anteriorly ; frontal bristles rather short, on each side in a 
single row, descending as far as the end of the second antennal joint; face slightly inclined ; vibrisse 
inserted a little above the oral margin and accompanied by several short bristles; eyes descending as far 
as the end of the antennw; beard white. Antenne shorter than the face; basal joints sometimes more 
or less rufous ; second joint with some short and rough bristles ; third joint narrow, four times as long 
as the second; arista slightly thickened at the base. Proboscis, at least its terminal lips, and palpi 
rufous. Thorax and scutellum whitish-grey; the four black stripes on the former interrupted at the 
transverse suture; base of the scutellum black. Abdomen conical, pale ochraceous ; all the segments 
with a narrow black hind border and a blackish dorsal stripe ; the first segment shorter than the second ; 
abdominal dorsum with many discal and marginal macrochete and black hairs; sides and ventral surface 
with yellowish pile. Legs slender, with weak bristles ; hind tibie outwardly with some long bristles; 
foot-claws and pulvilli slightly elongate. Tegule and wings greyish-hyaline; the costa with some 
brownish tint; small cross-vein nearly on the middle of the discal cell; apical cross-vein straight ; 
posterior cross-vein slightly curved. 
Hab. Mexico, Xucumanatlan in Guerrero 7000 feet (H. H. Smith). 
Three male specimens. 
5. Hypostena obumbrata, sp. n., ¢ ¢. 
Greyish ; frontal band, antenne, four stripes on the thorax, hind borders of the abdominal segments, and legs 
black ; abdomen laterally yellow, transparent ; palpi rufous. . 
Length 7 millim. bo. 
Head whitish-grey ; front in both sexes narrower than the eyes; frontal band broader than. the lateral 
portions ; frontal bristles descending as far as the end of the second antennal joint ; cheeks rather broad ; 
the eyes descending as far as the tip of the antenne ; beard and posterior orbits white. Antenne shorter 
than the face ; second joint bristly ; third joint three ‘times as long as the second ; arista thickened to 
less than the proximal half. Proboscis black, its terminal lips and the palpi rufous. Thoracic dorsum 
with four black stripes, which are usually less distinct behind the transverse suture, where sometimes the 
surface is black; scutellum grey, blackish at the base, or almost’ wholly black. Abdomen conical, later- 
ally yellow and transparent ; first segment, except the lateral portions, black ; second and third segments 
with broad black hind margins, in the middle black with grey reflections; anal segment greyish ; discal 
and marginal macrochete present ; ventral surface rufous, with grey reflections and a black median stripe. 
Legs black ; hind tibiee with several short and some long bristles ; foot-claws and pulvilli elongate in 
the male, the pulvilli yellow. Tegule yellowish. Wings yellowish-brown, greyish-hyaline towards the 
hind margin; small cross-vein on the middle of the discal cell; apical cell very narrowly opened ; curva- 
tion of the fourth vein with a blunt angle; apical and posterior cross-veins oblique, the latter slightly 
curved. 
