650 Prof. Mario Bezzi’s Report on a Collection of 
70. Lxoprosopa villaeformis, sp. nov. 
d 2. Length of the body (of 6 specimens) 17 to 18 mm., of the 
wing 16 to 17 mm., of the wing-expanse 36 to 38 mm. 
A robust species of larger size, with entirely hyaline wings, much 
resembling a Villa. 
Head black, the frons, with exception of the vertex and the face, 
reddish ; mouth edges whitish ; occiput near the indentation of the 
eyes with a broad band of silvery scales; frons with yellowish, face 
on the sides with silvery, tomentum ; the frons bears short but dense 
erect black hairs; the face shows white hairs on the sides. Face 
rounded, not projecting ; proboscis not projecting; frons of the 
female at the vertex one anda half times broader than that of the male 
at the same point. Antennae very far apart from each other and very 
short; the two basal joints are black (or, when denuded, reddish), of 
equal length, the first bearing very short black hairs; third joint 
onion-shaped, the broad portion not longer than the first two joints 
together and as long as the styliform portion ; the style almost as 
long as the whole antenna. Thorax black, reddish on the sides; 
the hairs on the collar and on the sides are yellow, those on the base 
of the wings are white ; bristles black ; hairs on the pleurae entirely 
white. Squamulae yellow, with a white fringe ; halteres yellowish. 
Scutellum reddish, with black marginal bristles. Abdomen black, 
reddish on the sides and on the venter ; there are on the segments 
cross-bands of black, yellow and whitish tomentum ; the hairs of 
the sides are alternately black and white ; venter clothed with white 
scales and hairs. The form of the abdomen is characteristic ; it is 
flattened, of rectangular outline, but the last segments are contracted, 
forming a cone; male genitalia symmetrical ; spines of the female 
genitaha blackish. Legs red, whitish pollinose and black spinose; tarsi 
and tibiae somewhat darkened ; hind claws with a small tooth. Wings 
hyaline, the base narrowly yellowish and the costal cell yellowish- 
grey ; origin of the second vein opposite ora little before the small 
cross-vein, which is placed before the middle of the discal cell; third 
posterior cell very long; second basal cell short and broad. Easal 
comb very large and yellow, like that of Villa. 
Type gand ? and four other specimens from North 
Nyasa, Deep Bay, Kaporo, Wovwi River and Mwiniwanda 
Valley, October to November 1909 (Dr. J. b. Davey). 
71. Exoprosopa minois, Loew (1869). 
Some specimens from North Nyasa, Nyungwi stream 
and Lake shore, October to November 1909 (Dr, J. £. 
