260 THE ENTOMOLOGIST. 
white, short, slender ; femora black above. Wings pellucid ; 
veins testaceous; fore fork of the cubital forming near its 
base an obtuse angle, which emits a branch. Halteres testa- 
ceous. Length of the body 73 lines. Wady Genneh. 
Gen. Damatis, Fabr. 
19. D. cinctipes. Male.—Black. Head broader than the 
thorax ; mystax composed of a few white bristles. Proboscis 
very short. Antenne setaceous, slender. Thorax with a few 
slender black bristles. Abdomen more than twice the length 
of the thorax. Legs with some white hairs; tibiz testaceous 
towards the base; hind tibize clavate; hind tarsi dilated. 
Wings cinereous; veins black. Halteres testaceous. Length 
of the body 43 lines. Hor Tamanib. 
Fam. NEMESTRINIDZ.—Gen. NEMESTRINA, Wied. 
20. N. Angyptiaca, Wied. Auss. Zweifl. 1. 249. N. reticulata, 
Latr., and N. Agyptiaca may be identical. The family 
Nemestrinidz excel all the other Diptera in the development 
of their wing-veins, and in their consequent power of flight. 
Cairo. A specimen of this species, from Trebizonde, is in the 
British Museum. 
Fam. BomsByitip2.—Gen. Exoprosopa, Macq. 
21. E. gloriosa. Female.—Black. Head with bright gilded 
tomentum and pubescence; epistoma prominent. Eyes 
iridescent. Antenne black, lanceolate; first and second 
joints luteous. Fore border and sides of the thorax and sides 
of the pectus with bright gilded hairs ; scutellum ferruginous. 
Abdomen broadly and thickly bordered above and below 
with bright gilded hairs; under side more thinly covered 
with pale gilded hairs. Legs luteous, with short black 
bristles ; tarsi black, except at the base. Wings black, with 
brilliant blue and purple reflections. Halteres testaceous. 
Length of the body 7} lines. The species of Anthrax and 
of Exoprosopa excel all the rest of the Diptera in beauty 
and elegance, and E. gloriosa is more gorgeous than all the 
others of its tribe. Harkeko. 
22. FE. marginalis. Female-—Black. Head tawny on’each 
side of the epistoma, which is prominent. Antenne black. 
lanceolate. ‘Thorax thickly clothed with orange hairs on the 
fore border and on each side with orange hairs. Scutellum 
piceous. Abdomen tawny and with gilded tomentum on 
