323 
SYSTEMATIC ARRANGEMENT 
of the country. The upper parts of the head, tho- 
rax, and abdomen are black, hut the sides of a deep 
ochre or orange colour ; wings smoke brown, the 
stigma dark ; legs ochreous, the tarsi dusky. 
TABANUS TROPICUS. 
Plate XXXIV. Fig. 2. 
Linn. Panzer , 
This exemplifies the well-known tribe of horse-flies, 
which are so troublesome in warm weather, by fix- 
ing on these animals, and sucking their blood. This 
species is not one of the most common, but it occurs 
now and then throughout the country. The anten- 
nae are ferruginous, dusky at the apex ; eyes green, 
with three transverse rays of purple ; thorax shining 
dark brown, with indistinct grey lines on the hack ; 
abdomen black, the first four segments widely fulvous 
at the sides, and the segments margined with the 
same colour behind ; belly fulvous, dusky behind ; 
tibiae ferruginous, the anterior brown before the 
middle, the others generally somewhat dusky at the 
apex ; tarsi black. 
DIOPSIS ICHNEUMONEA. 
Plate XXXIV. Fig. 3. 
Donovan's Indian Insects. 
This group presents the remarkable singularity of 
having the eyes placed on long footstalks, whence 
the species are sometimes called telescopic flies. 
The antennae are inserted on these lateral elonga- 
tions. The abdomen is narrowed at the base some- 
