78 DIPTERA. 
the middle of the discal cell; curvation of the fourth vein with a blunt angle; apical cross-vein nearly 
straight ; posterior cross-vein distinctly curved, inserted beyond two-thirds of the apical cell. 
Hab. Costa Rica, Volcan de Irazu 6500 to 7000 feet (Rogers). 
Four female specimens. 
Phorocera nigrita differs from P. tenebricosa in its somewhat smaller size and in the 
arista being thickened only at the base; also in the black palpi, the unicolorous black 
thorax, and the whitish reflecting spots on the abdomen. 
3. Phorocera carbonaria, sp. n., 2. 
Black ; thoracic dorsum anteriorly with grey tomentum and four black lines; abdomen with white reflections 
on the front borders of the segments, and with discal and marginal macrochete. 
Length 6°5 millim. 
Front broader than the eyes, blackish; frontal band black, as broad as the lateral portions; frontal bristles on each 
side ina double row and descending to the end of the second antennal joint ; cheeks blackish, with a white 
reflection and a trigonal rufous spot beneath the eyes. Antenne black; second joint bristly ; third joint 
four times as long as the second ; arista thickened in its proximal third. Proboscis and palpi black; the 
terminal lips of the proboscis and the tip of the palpi dark rufous. Thorax before the transverse suture 
with some grey tomentum and four black lines; scutellum black. Abdomen ovate, convex, shining 
black, with narrow white front borders to the second and third segments and whitish reflections at 
the sides ; macrochete long, and more conspicuous than in P. nigrita, owing to the pilosity of the 
abdomen being shorter. Legs black; the bristles very much as in P. nigrita, but those of the hind 
tibie less fringe-like and of more unequal length. Tegule brownish. Wings brownish-grey, more 
intensely so at the base and along the costa; small cross-vein before the middle of the discal cell; 
curvation of the fourth vein with a blunt angle; apical cross-vein straight ; posterior cross-vein slightly 
curved. 
Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith). 
A single female specimen. 
4. Phorocera parvula, sp. n., 2. 
Shining black, pilose; face and sides of the front fulvous; the second and following abdominal segments 
with the anterior margin whitish ; discal and marginal macrochete present; apical cell narrowly opened. 
Length 4°5 millim. 
This species is distinguished by its small size, black colour, and dense pilosity. Face blackish, laterally dark 
fulvous; the sides of the front of the same colour ; the front itself is a little prominent and proportionally 
narrow, being on the vertex less broad than the diameter of the eyes; frontal band black, narrow ; 
frontal bristles descending beneath the root of the antenne and beneath the point where the facial bristles 
finish. Eyes densely beset with a somewhat brownish pile. Antenne a little shorter than the face; 
second joint with several short bristles; third joint four times as long as the second; arista thickened for 
nearly half its length. Palpi black. Thorax and scutellum black, without any light tomentum or 
stripes. Abdomen elongate-ovate, shining black; second segment with a narrow whitish front margin, 
which is interrupted in the middle; third and fourth segments with a similar though broader margin, 
which sometimes forms white spots. The thorax and abdomen have a rather long black pilosity. Legs 
black ; the underside of the femora with many bristles ; the bristles of the middle tibia are not longer than 
the others; on the outside of the hind tibie is a row of bristles and a longer bristle a little below the 
middle; foot-claws and pulvilli short. Tegule large, whitish. Wings hyaline; apical cell narrowly 
opened at a short distance from the wing’s tip; small cross-vein a little before the middle of the discal 
cell; apical cross-vein straight ; posterior cross-vein slightly curved. 
- Hab. Mexico, Orizaba (H. H. Sinith & F. D. G.). 
A single female specimen. 
