Miss G. Ricardo on the Asilidee. 439 
joint. Forehead with chiefly black bristly hairs. The curled 
bristles are black and strong, with a few white bristles each 
side, the hairs continued round head are white. Beard white. 
Thorax bronze-green, covered with greyish-yellow tomeutum 
and with well-marked median and side stripes. Mane very 
meagre, hardly typical of this genus, composed of scanty 
short yellow hairs beginning from the middle only, sur- 
rounded by very short black bristles ; all the side-bristles are 
also stout but yellowish; the pubescence on dorsum black, 
short; a row of these hairs in place of a mane can be seen on 
the anterior part on the middle line. Scwtellum with stout 
yellowish-white bristles on its posterior border and weak 
hairs of the same colour on its dorsum. 4ddomen covered 
with yellowish tomentum, thickest at the sides and on the 
segmentations, leaving a large dark spot discernible on each 
segment ; dorsum covered with short yellow pubescence, the 
bristles are whitish and long ; underside with a few and also 
long yellowish hairs. Genitalia large, black, the upper 
forceps long, stout, and swollen at base, continued in a long 
curved point, the points meeting each other, leaving a large 
circular space between them; they are covered with rather 
thick yellowish-white pubescence ; under-forceps short with 
long yellowish-white hairs. Legs wholly bronze-coloured, 
covered with thick short white pubescence and stout yellow 
bristles, the middle and posterior femora heavily armed with 
them; only a few black bristles are present, two at apices of 
fore femora, and a group of short ones on the dorsum of the 
fore tibiz, or they are extended along the edge in some 
specimens, and a few black bristles are present on the tarsi. 
Wings clear, veins brown, the small transverse vein beyond 
the middle of the discal cell. 
Female is identical ; the black bristles above moustache 
are fewer in number. The curved bristles are all yellow. 
Thorax has some short yellow pubescence. Ovipositor short, 
the upper part covered with dense greyish tomentum on its 
basal half, the apical half narrower, black and shining, 
ending in a curved point, the lower part almost all black. 
Wings clear, greyish. 
One of the specimens from Zululand is much larger, and 
has one black bristle on the scutellum. . 
Dys¢éiytus, Loew. 
Ofvers, Kongl. Vet.-Akad. Férhandl, xiv, 1857, pp. 361 & 368 (1858). 
This genus was formed by Loew for one species, D. spurcus, 
