TELOTHYRIA. 185 
grey; occiput cinereous; front as broad as the eyes; frontal band black, with a grey reflection, narrower 
than the lateral portions; frontal bristles descending as far as the end of the second antennal joint ; 
vibrissee inserted at a little distance above the oral margin, and surmounted by some other bristles. 
Antenne a little shorter than the face ; second joint bristly ; third joint four times as long as the second ; 
arista thickened at the base. Proboscis black; palpi rufous, cylindrical. Thorax light cinereous, with 
some ochraceous tint, especially on the shoulders; the black stripes distinct and prolonged behind the 
transverse suture—the intermediate ones linear and more distant from each other than from the outward 
stripes ; scutellum blackish at the base. Abdomen elongate-oval, convex, carinated on the ventral side ; 
first segment black; the following segments yellowish-cinereous, with the hind borders broadly black ; 
anal segment cinereous, the anus itself rufous; macrochet rather long, on the hind margins of all the 
segments. Legs bristly; middle tibie with some long bristles ; hind tibia outwardly with several bristles 
of unequal length. Tegule yellowish-white. Wings greyish-hyaline ; small cross-vein on the middle of 
the discal cell; curvature of the fourth vein with a blunt angle; apical cross-vein nearly straight ; 
posterior cross-vein slightly curved, a little beyond the middle between the small cross-vein and the 
curvature of the fourth vein. 
Hab. Mexico, Venta de Zopilote 2000 feet, Xucumanatlan 7000 feet, both in Guer- 
rero, Teapa in Tabasco (H. H. Smith). 
Three female specimens. 
This species much resembles Masicera abdominalis (antéa, p. 106), from which it 
differs in having red palpi, the apical cell ending nearer to the wing’s tip, the anal 
segment not wholly rufous, and the bristles above the vibrisse not ascending so high 
on the face. 
37. Telothyria refuga, sp. n., 2. 
Thorax grey, with four black stripes; abdomen shining black, with white front borders to the segments ; 
frontal band, antenns, and legs black; palpi yellowish; wings with a costal spine. 
Length 5°5 millim. 
Head white; front nearly as broad as the eyes; frontal band as broad as the lateral portions ; frontal bristles 
descending as far as the end of the second antennal joint; eyes descending to the vibrisse. Second 
antennal joint bristly ; third joint three or four times as long as the second; arista thickened at the base. 
Proboscis black; palpi yellowish, filiform, scarcely thicker towards the tip. Thoracic stripes distinct 
before the transverse suture, but disappearing behind it in a more general black coloration; scutellum 
black. Abdomen elongate-oval, shining black ; second and following segments with narrow white front 
borders, and with macrochete on the hind margins. Middle tibie outwardly with a long bristle; hind 
tibie outwardly with a row of bristles of unequal length. Tegule white. Wings greyish-hyaline, with 
a short costal spine just before the end of the auxiliary vein; small cross-vein nearly in the middle 
of the discal cell; apical cell slightly concave; posterior cross-vein straight, in the middle between the 
small cross-vein and the curvature of the fourth vein. 
Hab. Mexico, Acaguizotla in Guerrero 3500 feet (H. H. Smith). 
Two female specimens. 
38. Telothyria pacata, sp. n., °. 
Thorax whitish-grey, with four black stripes; abdomen shining black, with whitish front borders to the seg- 
ments; frontal band, antenne, and legs black ; palpi yellowish. 
Length 5-5-6 millim. 
Head white; front slightly prominent, as broad as the eyes ; frontal band as broad as the lateral portions ; 
frontal bristles descending as far as the end of the second antennal joint; eyes descending to the vibrisse. 
Antenne nearly as long as the face; second’ joint bristly ; third joint four times as long as the second ; 
BIOL. CENTR.-AMER., Dipt., Vol. II., August 1890. 26 
