258 | DIPTERA. 
Tegule yellowish. Wings greyish-hyaline ; small cross-vein a little before the middle of the discal cell ; 
curvature of the fourth vein with a blunt angle; apical cross-vein concave before its end; posterior cross- 
vein slightly curved. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith). 
A single male specimen. 
2. Calodexia calceata, sp.n., o 2. 
Thorax black, anteriorly white ( ¢) or wholly whitish (9 ); abdomen yellow, with a dorsal band and the last 
two segments shining black ; antenne black ; palpi and legs yellow, the latter partly black. 
Length 5 millim. 
Front of the male very narrow, scarcely enlarged on the lower part, the lateral portions represented only by a 
white line on each side of the black frontal band; in the female the front is broader than the eyes and 
the black frontal band as broad as the white lateral portions ; vertex ochraceous ; face, cheoks, and poste- 
rior orbits white; vibrissal swellings parallel ; vibrisse quite at the oral margin. Antenne as long as the 
face, black, the short basal joints more or less rufous ; arista long-plumose, thickened at the base, gradu- 
ally tapering towards the tip. Proboscis black, its terminal lips and the small palpi yellow. Thorax and 
acutellum black, the thorax before the transverse suture with white tomentum and indistinct black stripes ; 
on the pleure a white band extends obliquely from the shoulders to the middle cox. In the female the 
white tomentum is extended over the whole surface of the thoracic dorsum and pleure. Abdomen 
yellow, the first and second segments and the base of the third somewhat transparent, with a rather broad 
black dorsal band, which in some specimens is interrupted or reduced to dorsal spots; third segment 
(except at the base) and also the anal one shining black, the anal segment with a white lateral spot; long 
macrochexte are on the hind margins of the second and following segments. Legs yellow, the tibize 
brownish, the tarsi black; in the male the femora have blackish tips, and the foot-claws and pulvilli are 
elongate. Tegule whitish. Wings greyish-hyaline, with a dilute brownish tint at the end of the costa ; 
apical and posterior cross-veins nearly straight ; the cross-veins different in position in the two sexes— 
in the male the small cross-vein is at the middle, in the female distinctly before the middle of the discal 
cell; the posterior cross-vein in the male is inserted in the middle between the small cross-vein and the 
curvature of the fourth véin, in the female it is inserted beyond the middle. 
Hab. Muxico, Venta de Zopilote in Guerrero 2800 feet, Atoyac in Vera Cruz, Teapa 
in Tabasco (H. H. Smith). 
Two male and two female specimens. 
3. Calodexia obscuripes, sp. n.,¢. 
Black, including the legs; thorax anteriorly white ; basal segments of the abdomen yellow. 
Length 4 millim. 
Closely allied to the preceding species, but easily distinguished by the black legs. The antenne are shorter ; 
the arista is thickened only at the base, and its plumosity is not so long; the second abdominal segment 
has a black hind border ; the foot-claws and pulvilli are short (that the specimen is a male is proved by 
its narrow front); the wings are more purely hyaline; the apical cross-vein is slightly concave at its 
end; the posterior cross-vein is inserted beyond the middle between the small cross-vein and the curvature 
of the fourth vein. The vibrissal swellings are divergent towards the oral margin (as in C. majuscula). 
Hab. Muxico, Atoyac in Vera Cruz (H. H. Smith). 
A single male specimen. 
