174 DIPTERA. 
white; first segment with marginal, the others with discal and marginal, rather long macrochete ; 
beneath the anus are two small curved spines, these turned towards the venter. Legs black, slender, the 
front pair with the tarsi longer than the tibie ; middle tibise with some long bristles; hind tibie with 
several long bristles; foot-claws and pulvilli slightly elongate, the pulvilli whitish. Tegule yellowish- 
grey. Wings with a dilute brownish tint; small cross-vein on the middle of the discal cell; curvature of 
the fourth vein rounded ; apical cell ending just at the wing’s tip; apical cross-vein concave; posterior 
cross-vein in the middle between the small cross-vein and the curvation of the fourth vein. 
Hab. Mexico, Xucumanatlan in Guerrero 7000 feet (H. H. Smith). 
A single male specimen. 
10. Telothyria pollens, sp. n., 3. 
Cinereous; head ochraceous; thoracic stripes, hind borders of the abdominal segments, antennw, and legs 
black ; anus and palpi rufous. 
Length 8 millim. 
Head pale ochraceous; front a little narrower than the eyes; frontal band brown, narrower than the lateral 
portions and not reaching the vertex ; frontal bristles on each side in a single row, descending to beneath 
the second antennal joint; eyes descending as far as the tip of the antenne ; vibrisse surmounted by 
several bristles; beard whitish. Third joint of the antenne four times as long as the second; arista 
thickened to the proximal half. Proboscis brown, the terminal lips with rufous hairs; palpi rufous, 
cylindrical. Thorax and scutellum greyish-cinereous; thoracic dorsum with four black stripes, which are 
prolonged behind the transverse suture, but do not reach the posterior margin of the thorax. Abdomen 
conical, convex, light cinereous, at the sides slightly yellowish and transparent; first segment black, the 
following two segments with blackish hind borders and a blackish dorsal stripe; anus rufous; discal and 
marginal macrochete are present, but the discal ones are shorter than the others; ventral surface with 
many hairs, those on the first segment yellowish, the others black. Legs black; middle tibia with some 
long bristles ; hind tibice with bristles of unequal length; front tarsi not longer than the tibie ; foot-claws 
and pulvilli elongate, the latter greyish. Wings nearly hyaline; small cross-vein on the middle of the 
discal cell; curvature of the fourth vein with a blunt angle; apical cross-vein oblique and straight; 
posterior cross-vein distinctly curved. 
Hab. Mxxico, Chilpancingo in Guerrero 4600 feet (H. H. Smith). 
A single male specimen. 
11. Telothyria forticula, sp. n.,¢. 
Cinereous; head silvery-white ; frontal band, thoracic stripes, broad hind borders to the abdominal segments, 
antenne, and legs black; palpi rufous. 
Length 7:5-9 millim. 
Front as broad as the eyes; frontal band as broad as the lateral portions; frontal bristles on each side in a 
curved row, descending as far as the end of the second antennal joint; cheeks rather broad, sometimes 
with a dark reflection; vibrissee surmounted by some shorter bristles; eyes not fully descending to the 
vibrisse ; beard white. Second joint of the antenne with some rough bristles ; third joint four times as 
long as the second; arista thickened in its proximal half. Proboscis brown, its terminal lips rufous, with 
yellow hairs; palpi cylindrical, rufous, with black hairs. Thorax and scutellum greyish-cinereous ; 
thoracic dorsum with four black stripes (which are less distinct than in J. pollens, though also prolonged 
behind the transverse suture), and anteriorly with a fifth (or median) stripe. Abdomen conical; first 
segment black; the following segments cinereous, with black hind borders (viewed in some positions the 
abdomen appears to be almost wholly black, with white front margins to the segments); discal and 
marginal macrochete are present, the discal ones being scarcely shorter than the others. Front tibice 
with short bristles; middle tibiee with some long bristles; hind tibis: outwardly with several bristles of 
unequal length; foot-claws and pulvilli short. Tegule white. Wings with some greyish tint; small 
