DIPTERA. 95 
curved: wings brown along the fore border, gray along the hind border ; 
an almost colourless streak extends from the hind border at the base along 
two-thirds of the disk, where it is interrupted, and appears again in a 
round spot nearer the tip; wing-ribs ferruginous ; veins black, ferruginous 
at the base and along the fore border; poisers tawny, with yellow tips. 
Length of the body 9 lines; of the wings 16 lines. 
Para. 
Dasyroagon incLusus, Mas. 
Albido-flavus, thorace vittis tribus nigris ornato, abdomine fulvo, antennis 
basi pedibusque flavis, alis limpidis apice subcinereis. 
Head broader than the chest, adorned with a whitish covering, beset 
behind the eyes with a row of black bristles, adorned beneath with a few 
white hairs; two black bristles on the tubercle of the eyelets; epistoma 
armed with six or eight white spines; eyes bronzed; fore part flat, its 
facets very large: sucker black, clothed at the tip with whitish hairs ; palpi 
pitchy, beset with black bristles; first and second joints of the feelers beset 
with black bristles ; first joint pale yellow; second tawny: chest and breast 
whitish yellow ; dish of the chest black, excepting two whitish stripes, which 
are curved outward in front : abdomen tawny, linear, much narrower than 
the chest and rather less than twice its length: legs yellow, thinly clothed 
with very short black hairs, armed with black bristles and spines ; fourth 
and fifth joints of the feet ferruginous ; pulvilli yellow; claws black, tawny 
at the base; tip-spines of fore-shanks much curved: wings colourless; tips 
pale gray; wing-ribs tawny; veins black, tawny at the base; poisers 
tawny. Length of the body 4 lines; of the wings 9 lines. 
Para. 
Dasypoaon Basais, Mas. 
Ferrugineus, capite aureo, thorace vittis duabus nigris ornato, abdominis 
lateribus albo nigroque maculatis, antennis ferrugineis, pedibus 
fulvis, femoribus rufescentibus, tarsis basi flavis, alis subcinereis 
Sulvo variis. 
Body ferruginous : head adorned with a bright gold-coloured cover- 
ing, having a few black hairs on each side of the crown, and a few tawny 
. 
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