114 SYRPHID&. 
pubescence ; base of tibie, front and middle trochanters, base of 
middle femora and base of front and middle tarsi yellow; hind 
femora swollen, clothed with very short hair, shining eneous, the 
basal spine very strong and long, blunt and black ; at the tips the 
hind femora are without an appendix, but bear a "double series of 
strong spines; hind tibiz club-shaped, clothed with very short 
hair; hind tarsi slightly thickened. Wings greyish hyaline, with 
black veins and black stigma; vena spuria distinct; apical cross- 
vein bearing three stumps, “two directed outwards and one inwards ; 
lower corner of the discal cell bearing an appendix. 
Type @, a single specimen from Durban, 1902 (F. Muir). 
Jf ’ 3 ’ 
121. Eumerus scaber, sp. n 
3. Length of the body 8 mm. 
A dark purplish, very deeply punctate species, which is closely 
allied to the following, but has a narrower yellow hind border to 
the scutellum and less idsotmee abdominal lunule. 
Head purplish black, with the occipital border strongly produced 
above and clothed with short black hair; posterior orbits silvery- 
white pollinose below and clothed with white hair; vertical triangle 
narrow and elongate, shining black, clothed with short black ie 
but its anterior extremity Rie pollinose and pale- haired ; front 
ocellus occupying a forward position, the ocellar triangle not being 
equilateral ; frontal triangle very small, shining bluish, with a small 
median depression, ‘almost bare; face thinly pollinose and sparsely 
clothed with white hair; eyes almost bare, in contact for a distance 
a little longer than the frontal triangle ; antenne short, black, the 
third joint rounded. Thorax purplish black, very strongly punctate 
and therefore but little shining, almost bare, its yellowish dust 
distinct only on the sides and behind ; pleuree with white hairs; no 
distinct longitudinal stripes on the back. Scutellum like the thorax, 
its hind border not sh: irply produced, narrowly yellow and minutely 
granulate. Squamule pale yellowish like the halteres. Abdomen 
as broad as the thorax and similarly punctate, rather short and of 
the same colour; on the sides it bears a white pubescence; the 
lunule are scarcely distinguishable, on the second and third segments 
they are indicated only by a rather deep furrow, which is alvtigh 
pollinose. Genitalia reddish, very much developed, projecting as a 
yellow tubercle, fringed with hair on each side, towards the middle 
of the belly. Legs. short, shining black, with very short whitish 
pubesc ence; front cox dark Dyanna trochanters, knees, and all the 
tarsi yellow ; hind femora Mickened: but without apophysis below 
at the tip, provided only with two rows of short spines, the external 
more developed; hind tibize clothed with short hair like the tarsi. 
Wings greyish hyaline, with dark stigma, and distinctly infuscated 
in the middle below the stigma to the fourth vein and from the 
prefurca to the end of the second vein; veins black ; vena spuria 
ore distinet ; apical cross-vein with two stumps ; inferior angle 
of the discal cell with the rudiment of a stump. 
