Miss G. Ricardo on the Asilidee. 225 
Promachus plutonicus, Walker. 
Proc. Linn. Soc. London, v. p. 265 [ Trupanea] (1861). 
Type (female) from Tond, Celebes, and another female 
from Menado, Celebes. 
Three males from Cape Engano, North Luzon, Philippines, 
(J. Whitehead), 98, 207. 
A very large, stout, black species; legs entirely black. 
Abdomen black-haired at apex in both sexes with fulvous 
pubescence. Wings brown. 
Length, ¢ 25-30, 9 32-35 mm. 
The: males from the Philippines are, on the whole, so 
similar to the females that they no doubt are one species, 
but they differ slightly, as will be noted below. 
Female.—Face with glistening yellow tomentum. Mous- 
tache composed of not very numerous long yellow bristles, 
numerous at the oral opening, fewer above, a few weak 
yellowish hairs below the antenne, round the oral opening 
are strong black bristles. Palpi with black hairs. Antenne 
blackish with some brown tomentum, the first joints with 
black hairs. Hind part of head with a few black bristles at 
each side of occiput, otherwise with yellow hairs. Thorax 
and scutellum velvety black with black pubescence and black 
bristles. Abdomen black; the first two segments with black 
hairs, dispersed almost as in tufts, shorter on the next 
three, which in the second female have some short fulvous 
pubescence ; the last three segments with golden-yellow hairs, 
beginning on the posterior border only of the sixth segment ; 
the ovipositor composed of the last segment is shining black, 
underside and sides with long black hairs. Leys stout, 
black ; the fore coxze with long golden-yellow hairs; pubes- 
cence on legs chiefly black, some very short fulvous pu- 
bescence on the femora and tibie. Wings longer than 
body, very large, tinged a deep brown with the usual grey 
streak. 
Males.— Face greenish black with some grey tomentum. 
Palpi with black hairs. Moustache almost entirely black, 
and the hairs below antennew black. Hind part of head 
with black hairs. Abdomen with distinct tufts of black 
hairs on the first three segments, but at the sides only. 
Genitalia short, the upper forceps small, pointed, covered 
with the golden-yellow hairs. 
Ann. & Mag. N. Hist. Ser. 9. Vol. v. 16 
