340 DIPTERA. 
Wings greyish-hyaline ; small cross-vein under the end of the first vein and beyond the middle of the 
discal cell; third and fourth veins parallel; terminal section of the fourth vein nearly double as long 
as the penultimate section ; posterior cross-vein straight. 
Hab. Mexico, Mexico city (H. H. Smith). 
A single male specimen. 
2. Phorbia fuscisquama, sp. n., 3. 
Black; eyes contiguous ; abdomen hairy, cinereous, with black dorsal spots ; tegule and wings brownish. 
Length 4 millim. 
Head blackish ; ocellar knob somewhat prominent; inferior part of the cheeks very narrow ; oral margin and 
underside of the head with many hairs. Antenne black, inserted a little above the median line of the 
eyes; second joint with a bristle; third joint nearly double as long as the second. Proboscis and palpi 
black. Thorax and scutellum unicolorous black, the thorax with many bristles. Abdomen elliptical, 
slightly convex, hairy, cinereous, with a row of black dorsal spots ; marginal macrochete present on the 
third and anal segments. Legs black, slender; front femora densely haired posteriorly ; tibie with 
scattered bristles ; foot-claws and pulvilli short. Tegule brownish ; halteres yellow. Wings brownish ; 
small cross-vein under the end of the first vein and beyond the middle of the discal cell; third and fourth 
veins nearly parallel; terminal section of the fourth vein much longer than the penultimate section 
(5 or 6:2); posterior cross-vein perpendicular, very slightly concave, nearly straight ; anal vein not 
reaching the border of the wing. 
Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith). 
Five male specimens. 
3. Phorbia prisca, sp. n., 3 2. 
Cinereous; eyes contiguous ; abdomen hairy, with a black dorsal stripe; antenne, palpi, and legs black ; 
tegule whitish ; wings greyish-hyaline. 
Length 3°5 millim. 
Front of the male triangular, black, with the lateral margins white ; eyes contiguous ; in the female the front 
is broader than the eyes, cinereous, with the frontal band broad, brown, before the antennz somewhat 
rufous ; face and cheeks whitish-grey ; inferior part of the cheeks linear in the male, slightly broader in 
the female. Antennz black, inserted on the median line of the eyes ; second joint with a bristle ; third 
joint nearly double as long as the second. Proboscis and palpi black. Thorax and scutellum cinereous ; 
thoracic dorsum usually unicolorous, but in some of the female specimens with traces of brownish stripes. 
Abdomen (<) elliptical, slightly flattened, hairy, greyish-cinereous, with a black dorsal stripe and more 
or less conspicuous black front borders to the segments ; sometimes the dorsal stripe is interrupted at the 
incisions and appears as a row of trigonal spots. In the female the abdomen is pointed towards the tip ; 
the hairs are much shorter, and the black markings are less distinct. Legs black, slender, with many 
bristly hairs ; foot-claws and pulvilli short in both sexes. Tegule white; halteres yellow. Wings 
greyish-hyaline ; small cross-vein nearly under the end of the first vein and beyond the middle of the 
discal cell; third and fourth veins parallel; terminal section of the fourth vein longer than the penultimate 
section (3 or 4: 2); posterior cross-vein straight ; anal vein reaching the border of the wing. 
Hab. Muxico, Ciudad in Durango 8100 feet (Forrer), Patzcuaro (Lf. D. Godman), 
Jalisco (Schumann). 
Three male and four female specimens. 
There are still several female specimens of Phorbia in the Mexican collections before 
me, but they cannot be dealt with upon that sex alone. 
