DIPTERA. 455 
Length 7°5 millim. 
Front velvety-black, narrowed behind, in the male as broad as the eyes, in the female broader; sides of the 
front, face, cheeks, and posterior orbits whitish ; beard white. Antenne black; third joint rounded, in 
the female as long as the second, in the male a little longer. Proboscis dark brown; palpi rufous. 
Thorax before the transverse suture velvety-black; the shoulders, two lines on the disc, and a narrow 
border at the suture pale yellow (in such a manner that three quadrate black bands are formed); behind 
the suture the thorax is somewhat shining; pleure black, with whitish reflections; scutellum and 
abdomen black, slightly shining. Legs black; coxa on the front side with whitish reflections; base of 
the middle and hind femora sometimes rufous ; the fringe of the hind tibie wholly black; foot-claws and 
pulvilli rather elongate in the male, the claws rufous with black tips, the pulvilli yellow. Tegule yellow ; 
halteres rufous. Wings largely black, the black coloration reaching the end of the apical and discal cells, 
the hind border greyish; small cross-vein nearly on the middle of the discal cell; apical cross-vein 
straight; posterior cross-vein distinctly curved. 
Hab. Mexico, Acapulco, Rio Papagaio, Rincon, Chilpancingo, Atoyac (H. H. Smith). 
A male and four females. Another male from Cuautla, Mexico, in the collection of 
the late Prof. Bellardi, in Turin, seems to belong to the same species; it is, however, 
larger (length 10 millim.), the black coloration of the wings extends a little beyond 
the exterior cross-veins, and the coxee and the base of all the femora are rufous. 
4, Trichopoda nitidiventris. 
Trichopoda mtidiventris, v. d. Wulp, Tijdschr. voor Ent. xxxv. p. 183’. 
Black ; face silvery-white; the transverse suture of the thorax and the indistinct lines before it whitish ; 
abdomen shining ; tegula brown; wings black, with the hind border and the tip broadly whitish. 
Length 10 millim. 
Thorax velvety-black, abdomen shining black. Front narrower than the eyes; frontal band velvety-black, 
the sides, like the face and cheeks, silvery-white; on both sides of the antenne a thin black line runs 
from the frontal band to behind the vibrisse. Antenne black, the second joint reddish at the tip ; the 
third joint oval, scarcely longer than the second. fPalpi brownish-red. On the thorax are indications of 
white lines before the transverse suture, which is more conspicuously white-margined. Abdomen rather 
convex, the anus dark rufous. Legs robust, piceous, the base of the femora dark rufous; front coxe 
covered with a whitish down ; the hind tibiz with a very rough and rather long black fringe, the tips of 
which are bright yellow ; foot-claws and pulvilli pale yellow, the claws with black tips. Tegule dark 
brown ; halteres yellowish. Wings with the black coloration not reaching the end of the apical and 
discal cells ; the apical cell closed a little before the wing’s tip. 
Hab. Mexico!, Atoyac in Vera Cruz (/. H. Smith). 
A single male specimen. 
5. Trichopoda alipes. 
Trichopoda alipes, v. d. Wulp, Tijdschr. voor Ent. xxxv. p. 183°. 
Black ; humeral spots and two thoracic lines white; base of the middle and hind femora rufous ; wings black, 
with the tip and hind margin broadly hyaline, the end of the costa yellowish. 
Length 7°5 millim. 
Front velvety-black, as broad as the eyes, narrower behind; face black, with silvery-white reflections. 
Antenne black, somewhat elongate ; third joint more than twice as long as the second. Proboscis and 
palpi black. Thorax before the transverse suture silvery-white, with three velvety-black bands (which 
are so broad that the thorax may be described as black, with two white lines and white humeral spots) ; 
