642 Prof. Mario — Report on a Collection of 
gd. Length of the body 12 mm., of the wing 13 mm. 
Very near the preceding, but well distinguished by the characters 
given above in the table. This species is perhaps the same as the 
aberrant ? specimen of 7. dimidiata described by Loew (I. ¢., p. 276), 
chiefly in regard to the form of the discal cell. It seems, moreover, 
to be nearly allied to E. sigmoidea described above, of which it is 
perhaps only a variety. The two species have a similarly shaped 
discal cell ; but the vein dividing it from the second basal cell is 
in £. discriminata only slightly curved ; and the black fore border 
of the wing is more narrow, being in sigmoidea as broad aa in 
E. dimidiata. 
Head black, with yellowish scales on the lower portion of the 
frons and on the face ; frons black-haired. Antennae with the two 
basal joints of a red colour; third joint black, more long and thin 
than in EH. dimidiata, shaped as in EH. sigmoidea, the style being 
shorter than the joint itself. Thorax with a distinct stripe of 
yellowish pubescence on the sides; mesopleurae with some black 
hairs; bristles black. Scutellum dark reddish, with yellowish 
pubescence and black bristles. Abdomen black; first segment with 
white hairs on the sides, the others black-haired ; it seems that the third 
segment bears a dorsal band of white scales ; the fourth and fifth have 
these scales only on the sides, the sixth and seventh are all covered 
with scales. Venter clothed with yellowish pubescence and pale hairs. 
Genitalia black, yellowish at the end. Legs entirely black, with 
black pubescence and with black bristles. Wings longer than in 
E. dimidiata ; the black pattern is more narrow, reaching only the 
first third of the discal cell; this cell is almost three times as long 
as broad, and much narrowed before the base (in dimidiata only 
twice as long as broad, and not narrowed towards the base); its 
exterior vein is only slightly curved ; the first posterior cell is much 
narrowed at the end. 
Type ¢, from Nyasaland, Fort Johnston, April 2, 1910 
(Dr. A. H. Barclay) ; a single specimen. 
57. Hxoprosopa luctifera, sp. nov. (Plate L, fig. 16.) 
?. Length of the body 12 mm., of the wing 12 mm. 
Very near H. dimidiata, but characterised by the black meta- 
pleural tuft. 
Third joint of the antennae of the same short conical shape as in 
E. dimidiata ; basal joints black. Thorax with the hairs of the 
collar only yellow, those on the pleurae entirely black. Scutellum 
with reddish hind margin. Squamulae with a dark fringe. Ab- 
domen black; the white clothing seems to be disposed as in 
HE. discriminata. Spines of the genitalia yellow. Legs wholly 
