638 Prof. Mario Bezzi’s Report on a Collection of 
39 (40). Third antennal joint very elongate, without style, and yellow 
in its basal half. ; : heterocera, sp. n., p. 649. 
40 (39). Third joint of the antennae entirely black, not so long, and 
often very short, always with distinct style. 
41 (42). Third joint of the antennae very short, ending in a short 
point, with the terminal style longer than the joint itself ; 
large species of the appearance of a Villa 
villaeformis, sp. n., p. 650, 
42 (41). Third joint longer than the style. 
43 (46). Legs and body black. 
44 (45). Hairs of the breast grey .. .  minois, Loew, p. 650. 
45 (44). Hairs of the breast black . hypomelaena, sp. n., p. 651, 
46 (43). Legs and body partly red. 
47 (48). Wings with a slight yellowish tint ; hairs on the pleurae 
yellowish-grey : inornata, Loew, p. 651. 
48 (47). Wings pure hyaline ; hairs on the pleurae pure white 
spec. indet., p. 651. 
50. Exoprosopa umbrosa, Loew (1860). 
A single female from West Nyasa (Dr. H. S. Stannus), 
which agrees well enough with the description. The third 
posterior cell is a little shorter than the second, and at 
the apex is only a little broader than the same cell. The 
angle of the discal cell shows the stump in the third 
posterior cell, as stated by Loew; but there is a second 
stump in the discal cell itself, beginning at the vein 
dividing the second from the third posterior cell and 
making a small supernumerary cell in the upper apical 
corner of the discal cell. The spines of the female 
genitalia are yellowish-red. 
51. Hxoprosopa imernvis, sp. nov. 
¢. Length of the body 12 mm., of the wings 10 mm. 
A species characterised by the angle of the discal cell and the 
Inteous colour of the head, abdomen and legs; a striking character 
distinguishing it from any other species 1s the apparent absence of 
bristles on the thorax and scutellum, but I am not absolutely sure 
of this, owing to the poor preservation of the specimen ; at any rate 
I cannot find a trace of the points of insertion of the bristles, if these 
are denuded. 
Face not projecting at all, rounded, convex, shining ; frons broad, 
for a male, with sparse yellowish pubescence and short black hairs; 
antennae yellow, the third joint a little darkened, of conical shape, 
longer than the two basal joints together, with the terminal style as 
Jong as one-third of the joint itself. Proboscis black, not prominent. 
