176 DIPTERA. 
14. Telothyria vaciva, sp. n., 3. 
Blackish; thorax anteriorly whitish, with four black stripes; abdomen laterally somewhat yellowish and 
transparent, the front borders of the segments whitish ; palpi rufous. 
Length 4:5 millim. . 
Front narrower than the eyes, especially on the vertex ; frontal band black, broad, the lateral portions of the 
front white, linear; frontal bristles descending as far as the end of the second antennal joint ; face and 
cheeks whitish ; vibrissee inserted at a considerable distance above the oral margin; eyes not descending 
beneath the vibrisse ; beard white. Antenne black, distinctly shorter than the face ; second joint bristly ; 
third joint four times as long as the second; arista thickened in its proximal half. Proboscis black ; palpi 
pale rufous, scarcely thicker towards the tip. Thorax and scutellum black ; thoracic dorsum before the 
transverse suture whitish, with four distinct black stripes, the outer stripes much broader than the median 
ones; pleurz with some irregular whitish markings. Abdomen conical, shining black, the front borders 
of the second and following segments whitish ; laterally yellowish-rufous and somewhat: transparent, this 
pale coloration occupying the hind part of the first segment and, more broadly, that of the following two | 
segments ; the anus has a narrow rufous margin; many long discal and marginal macrochete are present. 
Legs black; posterior tibiee with rather long bristles ; foot-claws and pulvilli a little elongate, the pulvilli 
yellowish. Tegule yellowish-grey. Wings with a dilute brownish tint, nearly hyaline ; small cross-vein 
on the middle of the discal cell; curvature of the fourth vein with a blunt angle; apical cross-vein 
straight ; posterior cross-vein slightly curved. 
Hab. Mexico, Chilpancingo in Guerrero 4600 feet (7. H. Smith). 
A single male specimen. 
15. Telothyria dissepta, sp. n., 3. 
Shining black; thorax anteriorly whitish-grey, with four black stripes; abdominal segments with whitish 
front borders ; dorsal macrochete of the anal segment short. 
Length 6 millim. 
Head white; front narrower than the eyes; frontal band black, broader than the white lateral portions ; 
frontal bristles descending as far as the end of the second antennal joint; eyes descending to near the 
vibrisse ; beard white. Antenne black; second joint bristly; third joint four times as long as the 
second ; arista thickened in its proximal third. Proboscis and palpi black. Thorax and scutellum 
shining black ; thoracic dorsum before the transverse suture whitish-grey, with four black stripes ; pleure 
with irregular whitish reflections. Abdomen conical, shining black, the second and following segments 
with whitish front borders, which in the middle are interrupted by a black dorsal stripe, and with discal 
and marginal macrochete ; the dorsal macrocheete on the anal segment are much shorter than the others. 
Legs black; posterior tibie with rather long bristles ; foot-claws and pulvilli elongate, the pulvilli greyish. 
Tegule yellowish-grey. Wings nearly hyaline ; small cross-vein on the middle of the discal cell; apical 
cross-vein nearly straight ; posterior cross-vein slightly curved. 
Hab. Mexico, Venta de Zopilote in Guerrero 2800 feet (H. H. Smith). 
A single male specimen. 
16. Telothyria recondita, sp. n., 3. 
Black ; thorax anteriorly greyish, with four black stripes ; abdomen with whitish front borders to the segments ; 
dorsal macrochete of the anal segment as long as the others. 
Length 4 millim. 
Closely resembling T. dissepia, from which it differs in the whitish tomentum and the black stripes on the 
thorax being extended to a little behind the transverse suture; the macrochets on the upper portion of 
