180 | DIPTERA. 
24. Telothyria ochrifrons, sp. n., 2. 
Head and thorax pale ochraceous; frontal band, four thoracic stripes, antenne, and legs black; abdomen 
cinereous, with black reflecting spots; palpi rufous. 
Length 5°5 millim. 
Front as broad as the eyes, with nearly parallel sides; frontal band narrower than the ochraceous lateral 
portions; frontal bristles descending to beneath the second antennal joint; eyes descending to the 
vibrisse, Second joint of the antenne bristly; third joint four times as long as the second; arista 
thickened in its proximal half. Proboscis black; palpi rufous, cylindrical, slightly curved upwards. 
Thorax and scutellum cinereous; thoracic dorsum anteriorly pale ochraceous; the four black stripes 
linear, the outer stripes interrupted at the transverse suture (seen from the front, the thorax appears 
blackish, with two whitish stripes). Abdomen ovate; first segment black; the following segments 
cinereous, with irregular black reflecting spots, mostly at the hind margins; discal and marginal - 
macrocheetee present, but short. Middle tibie with some long bristles; hind tibie outwardly with a 
row of short bristles and a longer one below the middle. Tegule white. Wings greyish-hyaline; small 
cross-vein before the middle of the discal cell; apical cross-vein nearly straight ; posterior cross-vein more 
or less curved. 
Hab. Mexico, Venta de Zopilote 2800 feet, Amula 6000 feet, both in Guerrero 
(H. H. Smith). 
Three female specimens. 
25. Telothyria murina, sp. n.,¢. 
Blackish, with some grey tomentum; thorax anteriorly with black stripes; head yellowish; palpi rufous. 
Length 6 millim. 
Front narrowed behind and there a little narrower than the eyes ; frontal band as broad as the lateral portions, 
which are yellowish-cinereous, with white reflections; frontal bristles descending as far as the end of the 
second antennal joint; face and cheeks yellowish-white ; eyes descending to the vibrisse. Antenne 
black; second joint with bristly hairs; third joint nearly four times as long as the second; arista 
thickened in its proximal half. Proboscis black; palpi rufous. Thorax and scutellum black, the thorax 
anteriorly with grey tomentum and four black lines. Abdomen elongate-oval, convex, black, with whitish 
front borders to the second and following segments and with short discal and marginal macrochete. 
Legs black ; middle tibize with some long bristles ; hind tibis outwardly with a row of short bristles and 
a longer one below the middle; foot-claws and pulvilli short. Tegule and wings greyish-hyaline; small 
cross-vein before the middle of the discal cell; curvature of the fourth vein with a blunt angle; apical 
cross-vein oblique, parallel with the outer portion of the hind margin of the wing; posterior cross-vein 
curved. 
Hab. Mexico, Venta de Zopilote in Guerrero 2800 feet (H. H. Sinith). 
A single female specimen. 
26. Telothyria assimulata, sp. n.,3 ¢. 
Black; thorax anteriorly whitish, with black stripes; abdominal segments with narrow white front borders ; 
palpi rufous. 
Length 4°5 millim. 
Head whitish, broader than the thorax; front broader than the eyes; frontal band black, as broad as the 
lateral portions ; frontal bristles descending as far as the end of the second antennal joint. Antenne 
black ; second joint bristly ; third joint three times as long as the second; arista thickened in its proximal 
half. Proboscis black ; palpi rufous, cylindrical. Thorax and scutellum black; the shoulders and the 
anterior part of the thorax whitish, with four black stripes; pleuree with a whitish band extending from 
the shoulders to the middle coxe. Abdomen ovate, shining black; the second and following segments 
