46 Miss G. Ricardo on the Asilidee. 
large, clear, with a yellowish tinge; veins yellow, the small 
transverse vein beyond the middle of the discal cell. 
Female identical, the bristles on thorax and scutellum 
almost entirely yellow; the short bristles on the hind 
femora below are seven, with three on the upperside ; 
ovipositor short, black. 
The femora in the other male and female are reddish 
yellow. 
Machimus assamensis, ¢ ¢ , 8p. 0. 
Type (male) and type (female) from Assam (MV. F, 
Badgley), 1906, 185. 
A haudsome black species with yellow pubescence, in 
general appearance somewhat similar to Machimus dubius, 
sp.n. Legs with few bristles, uniformly black, with some 
yellow pubescence. Moustache black aud yellow. 
Length 22 mm. 
Male.—Face covered with yellowish tomentum ; tubercle 
large. Moustache composed of black bristles above and 
bright yellow bristly hairs below. Pa/pi black, with black 
hairs. Beard bright yellow, thick hairs round head the 
same colour, mixing with the postocular black bristles. 
Antenne blackish brown, the first two joints with black 
bristly hairs, third joint broken off. Thorax greyish yellow, 
almost entirely covered by the blackish-brown stripes ; prze- 
sutural bristles three in number, supra-alar three, post- 
alar two, all black and very long and strong; the dorso- 
ceutral bristles apparently ten or so in number, interspersed 
with long black hairs; pubescence on dorsum black. 
Scutellum with four black bristles on its margin. Abdomen 
greyish yellow, the usual blackish spot on each segment 
gives the abdomen a black appearance; pubescence at sides 
and on dorsum bright yellow; genitalia shining black, with 
black and yellow hairs ; the eighth ventral segment produced 
to a long blunt point covered with black hairs and with 
yellow haixs at the sides. Legs black; femora stout with 
short white pubescence and longer white hairs below, no 
bristles on the first pair, only two or so on the middle pair, 
very long and strong, on the hind pair two below, four on 
the upperside and two at apex, fore and middle tibiz with 
yellow short hairs, the hind pair with black hairs, all with 
black bristles, the fore and hind pair and metatarsi with a 
thick fringe of appressed fulvous hairs on under surface. 
Wings grey, ouly a streak of pale colour in the middle and 
