bo 
S&S 
Lo 
DIPTERA. 
pubescent, thickened to the proximal half. Proboscis black; palpi yellowish, slightly thickened towards 
the tip. Thorax and scutellum yellowish-cinereous ; thoracic dorsum with four black lines, the outer 
lines interrupted at the transverse suture; scutellum blackish at the base; pleura grey. Abdomen 
elongate-oval ; first segment black ; the following segments cinereous, with broad black hind borders, and 
with long marginal macrochete. Middle and hind tibie with long bristles, these being more numerous 
on the hind than on the middle tibie. Tegule yellowish-white. Wings greyish-hyaline ; small cross- 
vein on the middle of the discal cell; curvature of the fourth vein somewhat rounded; apical cross-vein 
slightly, posterior cross-vein more distinctly, concave. 
Hab. Muxico, Venta de Zopilote in Guerrero 2800 feet (H. H. Smith). 
A single female specimen. 
35. Anisia approximata, sp.n., °. 
Grey ; head white; frontal band, four thoracic stripes, reflecting spots on the abdomen, antenne, and legs 
black ; palpi rufous; third vein bristly. 
Length 6°5 millim. " ; 
Front white, with grey reflections, broader than the eyes; frontal band very narrow, linear; frontal bristles 
descending as far as the end of the second antennal joint; face and cheeks silvery-white. Antenne 
nearly as long as the face; third joint six times as long as the second ; arista thickened to the proximal 
half. Proboscis black, its terminal lips dark rufous. Thoracic dorsum cinereous, with four black stripes, 
the outer stripes interrupted at the transverse suture; pleure grey; scutellum black. Abdomen elongate- 
oval; first segment black ; the following segments grey, with black reflections (which in one specimen are 
extended in such a manner that there remain only narrow white front margins to the segments); all the 
segments with long marginal macrocheete ; ventral surface blackish. Front tibiee outwardly with a row 
of short bristles; middle tibie with some long bristles; hind tibiw outwardly with several bristles of 
unequal length. Tegulw white. Wings greyish-hyaline; third vein with a row of short bristles extending 
from the base to the small cross-vein ; curvature of the fourth vein rectangular; small cross-vein on the 
middle of the discal cell ; apical cell concave at its base; posterior cross-vein nearly straight. 
Hab. Mexico, Venta de Zopilote in Guerrero 2800 feet (#7. H. Smith). 
Two female specimens. 
36. Anisia palposa, sp. n., 2. 
Black; head white; thorax light grey, with four black stripes; front borders of the abdominal segments 
whitish ; palpi rufous, thick. 
Length nearly 4 millim. 
Head white, with grey reflections; front a little broader than the eyes; frontal band black, narrower than the 
lateral portions ; frontal bristles descending as far as the end of the second antennal joint. Antenne 
black, nearly as long as the face; second joint bristly; third joint three or four times as long as the 
second, pointed at the tip; arista thickened at the base. Proboscis black; palpi pale rufous, propor- 
tionately thick. Thorax with a whitish-grey tomentum, which is more conspicuous before the trans- 
verse suture; thoracic dorsum with four black stripes (these in some lights very distinct, but in others 
disappearing in a brownish-cinereous reflection); scutellum blackish, with grey reflection. Abdomen 
conical, black, with whitish front borders to the second and following segments; on the second and third 
segments this whitish colour is interrupted by a black dorsal line; macrochete are on the hind margins 
of the segments, except on that of the first. Legs black; middle tibiee with some long bristles; hind tibia 
outwardly with several bristles of unequal length. Tegule white. Wings greyish-hyaline, with a short 
costal spine; small cross-vein distinctly before the middle of the discal cell ; apical cross-vein slightly 
concave ; posterior cross-vein straight, perpendicular, in the middle between the small cross-vein and the 
curvature of the fourth vein. 
