Miss G. Ricaivlo on the Asilidre. 225 



Promachus plutonicHs, AValker. 

 Proc. Linn. Soc. Loudon, v. p. 265 [^Trupanea] (18G1). 



Type (female) from Toiid, Celebes, and another female 

 from Menado, Celebes. 



Three males from Cape Etigano, North Lnzon, Philippines, 

 (J. Whitehead), 98, 207. 



A very large, s^tout, black species; legs entirely i)lack. 

 Abdomen black-haired at apex in both sexes with i'ulvous 

 pubescence. Wings brown. 



Length, S 25-30, ? 32-35 mm. 



Tlie 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 w ill be noted below. 



Female. — Face with glistening yellow toraentum. Mous- 

 tache composed of not very numerous long yellow bristles, 

 numerous at the oral opening, fewer above, a few weak 

 yellowish hairs below the antennae, round the oral opening 

 are strong black bristles. Falpi with black hairs. Antenna 

 blackish with some brown tomentum, the first joints wiili 

 black hairs. Hind part of head with a few black bristles at 

 each side of occiput, otlierwise with yellow hairs. Thorax 

 and scutelluin 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 coxte with long golden-yellow hairs; pubes- 

 cence on legs chiefly l)lack, some very short fulvous pu- 

 bescence on the femora and tibiae. 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 antenme black. Ilind 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. ct- Mag. N. Ihsi. Scr. T*. Vof. v. 16 



