258 THE ENTOMOLOGIST. 
11. D. longicornis, Macq. Dipt. Exot. i. 2, 192. Harkeko. 
Wady Gennéh. Inhabits Egypt. 
Fam. Lapurip&.—Gen. Lapurtia, Fabr. 
12. LZ. nobilis. Male and female.—Black, with slight cine- 
reous tomentum. Head with black bristles on the vertex 
and behind and beneath the mystax, which is white; under 
side with white hairs. Palpi with black bristles. Antenne 
clavate; third joint fusiform. Thorax with a white spot on 
each side in front. Abdomen dark blue towards the tip; 
first segment with black bristles on each side; second and 
third with a silvery white spot on each side. Legs with black 
bristles and spines ; arolia pale testaceous. Wings pellucid, 
more or less brownish and with brown veins towards the 
tips ; veins elsewhere luteous. Halteres testaceous. Length 
of the body 11—15 lines. The group to which this species 
belongs has numerous representatives in the Eastern Isles. 
Rafla. Tajura. 
Fam. Asitip#.—Gen. Erax, Macq. 
13. #. cinctipes. Male.—Black, with cinereous tomentum. 
Head with white hairs behind, and with a thick white 
mystax. Antenne slender; third joint lanceolate; arista 
nearly twice the length of the third joint. Thorax with two 
black approximate stripes. Abdomen tapering, with cinereous 
hairs ; tip above with a thick tuft of white hairs. Legs stout, 
with cinereous hairs; femora tawny beneath; tibie tawny, 
with black tips; tarsi with stout black bristles. Wings 
cinereous ; veins black, tawny at the base; a dark cinereous 
streak between the forks of the cubital vein; these forks are 
formed by a transverse veinlet near their base, and there is 
another veinlet between the hind fork and the first externo- 
medial vein. Halteres testaceous. Length of the body 
9 lines. Wady Ferran. 
14. E. cinicolor. Female.—Black. Head with white tomen- 
tum, clothed with white hairs; mystax white. Antenne 
slender; arista long. Thorax with cinereous tomentum and 
with three paler shining slender stripes; a few long stout 
black bristles on each side. Abdomen with hoary tomentum, 
full twice the length of the thorax, tapering from the base to 
the tip, which is black and shining. Legs stout, with hoary 
tomentum and with some black bristles; femora beneath and 
