DIPTERA. Ty, 
side ; compound joint slightly curved upward, much shorter than the third 
joint: chest clothed with short pale yellow hairs ; breast thinly clothed 
with short white hairs: abdomen tawny, obconical, a little narrower and 
much longer than the chest ; under side tinged with whitish colour ; tip 
ferruginous, beset beneath with short black bristles; back brownish tawny, 
tawny at the base and thence partly along each side, which is adorned 
with a row of yellow spots: legs pale tawny, clothed with short black hairs ; 
thighs clothed with short white hairs ; claws black towards the tips: wings 
whitish ; wing-ribs and veins pale tawny; angle of the tip cross-vein very 
obtuse, slightly rounded ; scales whitish, with pale tawny borders ; poisers 
pale tawny. 
Fem. Head golden yellow above, white beneath : eyes bronzed; the 
facets as usual: palpi sometimes white: abdomen darker than that of the 
male, its back gray, with a stripe composed of hoary hairs along each side. 
Length of the body 33—4 lines; of the wings 7—8 lines. 
East India. 
Tapanus Pyrruus, Plate 2, fig. 4, Mas., fig. 5, Fem. 
Mas et Fem. Cinereus, thoracis lateribus, abdomineque fulvis (fem. abdo- 
mine cinereo lateribus basi fulvis), antennis fulvis basi flavis, pedibus 
fulvis, tarsis anticis piceis, alis albidis. 
Male, Head whitish and clothed with white hairs beneath: eyes pale 
red, of one colour, but divided into two very distinct regions, distinguished 
by the great difference in the size of the facets: sucker pale tawny; lan- 
cets pale ferruginous ; palpi yellowish white, clothed with white hairs : 
feelers bright tawny ; first and second joints pale yellow, beset with a few 
very short black bristles; third joint very slightly convex beneath, forming 
above a very shallow obtuse angle whose hind side is one fourth of the length 
of its fore side; compound joint curved upward, much shorter than the third 
joint : chest and breast gray, clothed with hoary hairs ; their sides tawny : 
abdomen tawny, obconical, very much longer than the chest, clothed with 
hoary hairs, darker towards the tip: under side ferruginous towards the 
tip which is beset with a few short black bristles: legs tawny, clothed with 
a few very short black hairs; thighs clothed with white hairs; feet and 
fore-shanks darker towards the tips; claws black ; fore-feet pitchy : wings 
whitish ; wing-ribs and veins pale ferruginous ; angle of the tip cross-vein 
distinct but very obtuse, sending forth a stump which is more or less shorter 
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