82 
13. 
4. 
15. 
16. 
17. 
18. 
DIPTERA 
legs strong ; bygidium rarely veflexed and not carinate beneath. 
(If costa encompasses wing and front is broadly V-shaped, 
see Proclinopyga zn the Clinoceratine) ... Wem 
Auxiliary vein complete, ending in the costa QA 
Auxiliary vein evanescent at the end, not attaining ihe costa . 
Eyes of the male contiguous, upper facets largest; basal joints 
of the antenne minute, first joiut of the style very thich ; Pro- 
boscis strong, the labrum inflexed ; face short, epistome broadly 
receding ; anal augle of the wing strong ; anal vein meeting the 
under side of the anal. cell, anal. crossvein. short; Pygidium 
showing dorsal appendages. (Pl. 8, Fig. 84) . . . . 
Eyes of the male broadly separated, middle facels largest; first 
antennal joint distinct ; face not short ; bygidium not open 
Auxiliary vein bending forward at the end to meet the costa, anal 
angle prominent, anal crossvein reaching nearly halfway to 
the base of the anal. cell, anal. vein separate from the under 
side of the anal cell, fork of the third vein long; at least 
frouto-orbital and lateral thoracic bristles. evident; front 
melatarsi of the male almost always enlarged; fygidium 
compressed and directed. forward over the abdomen; palpi 
cylindrical and upturmed or. slightly clavate. (Pl. 6, 
Fig. 55). . 
Auxiliary vein almost straight, not dedi Joni fo meet T : 
costa, anal angle broadly rounded, anal crossvein short, anal 
vein meeting the under side of the anal cell or obsolete, fork of 
the third vein short ; melatarsi simple ; bristles rarely evident; 
Pygidium globose s 
Antenna tipped with a short hwo-jointed arista gnum bod. seg- 
ment is one-fourth the distal; dorsocentral, scutellar. and 
lateral bristles present ; ocelli located iu. front of ihe vertex, 
antenne below the middle of the head ; Pygidial valves directed 
backward. (Pl. 7, Fig. 66; PI. 8, Fig. 78, 81). 
Antenne Lipped with a short two-jointed style, whose basal seg- 
ment is longer tham the terminal stubby brislle; thoracic 
bristlles almost wanting ; ocelli located on. the verlex, antenne 
at ihe middle of the head ; fygidial valves erect, (Pl. T, 
Fig. 61). 
First vein. thichly. beset with hairs Pede is entire jns! 
mesonolum clothed. «ith short hairs, mesopleure and flevo- — 
pleure sometimes hairy ; proboscis as long as the head ; males 
dichoptic; axillary angle of the wing strong, anal augle well 
developed. (Pl. 2, Fig. 15) . 
All the veins bare; mesopleure and. pteropleure bare . 
Eyes of the male. contiguous on the front; abdomen very deli 
third vein. forked, anal angle well developed ; third. joint. of 
the antenne long and. conico-cylindrical, style three-jointed, 
P C (ou Moo. 
RW dp c ur M e 
* . " . . . . . *. B . * 17. 
Genus Racas, Walker. 
Genus HirARA, Meigen. 
Genus PirrgrUs, nov. gen. 
Genus HgsrEREMPIS, Melander. 
Genus PHLEBOCTENA, Bezzi. 
eX. 18. 
