
594 RECORDS OF THE S.A. MUSEUM 
anterior cord strangly bowed; basal abdominal tergites patterned with yellow, 
blic-black and opaque black; outer abdominal segments dull orange to chestnut 
brown. 
@ Length, about 12-5-15 mm.; wing, 12-12-5 mm.; antenna, about 6-5 mm, 
® Length, about 15-16 mm.; wing, 13 mm. 
Frontal prolongation of head clear light yellow; nasus yellow, the tip 
darkened, with long black setae; palpi yellow, the outer third or fourth of the 
terminal segment infuseated. Antennae (male) clongate, as shown by the 
measurements; scape dark brown, pedieel abseure brownish yellow; flagellum 
black, the apices of the more proximal segments more or less brightened, in cases 
rather distinctly so; flagellar segments clongate-subeylindrieal, the basal enlarge- 
ments very small; verticils less than one-third the length of the segments. Head 
light yellow; posterior vertex with a delicate reddish lhvown vitta, narrowed to a 
point on the low vertical tubercle, becoming more diffuse bebind; no oceipital 
brand. 
Pronotum infnseated, the seutum very narrowly more brightened behind. 
Mesonotal praescutim and seutum almost uniformly shiny black, with vague 
bluish reflections; seutellum somewliat more brownish black or dark brown; 
median region of scutum vaguely brightened; mediotergite clear light yellow, 
restrictedly darkened behind; plenrotergite yery light yellow, the posterior 
portion weakly infusvated, Pleura light yellow, the dorsal anepisternum and 
posterior portion of dorsoplenral membrane vaguely more infuseated, Halteres 
brownish black, the extveme base of stem. brightened. Tiegs with the eoxae and 
trochanters light yellow, the fore coxae, in eases, a trifle more darkened; femora 
obscure brownish yellow, tibiae darker, tarsi passing into brownish black or black; 
elaws (male) toothed and with sparse but very conspicuous setae. Wings whitish 
hyaline, cell Se pale brown; stigma and adjacent region dark brown but very 
small anc correspondingly inconspicuous; veins black, those in the prearenlar 
field brown, Venation: Anterior cord very strongly bowed, in degree about as in 
subfaceta; veins at outer end of stigma very atrophied and crowded, with no 
trace of a basal spur of Ry ,o; vein Fy lying close to the margin, nartawing the 
cell; outer medial forks deep, 
Abdominal tergites handsomely patterned; basal segment blackened, obseure 
yellow on sides; second segment orange on basal half, polished blue-black on 
posterior ring, the posterior portion of both the yellow and blackened portions 
narrowly bordered by opaque velvety black, on the former microscopically 
impressed; on tergites three to five the pattern is similar, with the amount of 
yellow becoming reduced; lateral borders of tergite five, as well as segments 
six to eight, light ebestnut brown to dull orange, the base of tergite six extensively 
blackened ; sternites and hypopyginm light chestnut brown to dull orange. Male 
