308 INSECTA SAUNDERSIANA. 
slightly so near the tip which is very near that of the cubital vein; lower 
cross-vein with two curves, the lower deeper than the upper: alule white: 
halteres tawny. Length of the body 6 lines; of the wings 11 lines. 
DExIA DORSALIS. 
Testacea ; caput antice argenteum ; thorax nigro trivittatus, vitta media 
flavo quadristrigata ; abdomen fulvum, cano-micans, nigro vittatum 
et laterihus maculatum ; pedes fulvi, tibiis ferrugineis, tarsis nigris ; 
ale cineree, ad costam fulve ; venis fusco marginatis, 
Testaceous, slender, with a pale yellow covering: head clothed behind 
and beneath with pale yellow hairs ; fore part silvery white ; frontalia deep 
brown, linear, with a dark red streak; mouth and palpi pale testaceous : 
feelers testaceous ; sixth joint clothed with long hairs: chest with three deep 
brown stripes, the middle one very broad, inclosing four yellowish streaks, 
the inner pair united in front, dilated behind: abdomen tawny, with hoary 
reflections, adorned with a black stripe, and on each side with a row of 
black spots: legs tawny; shanks ferruginous ; feet black; wings gray, 
tawny along the fore border for half the length from the base, slightly tawny 
along the borders of the veins; veins pitchy, tawny towards the base and 
along the fore border ; prebrachial vein forming a hardly acute angle at 
its flexure, curved inward from thence along its whole length, especially 
near the base; lower cross-vein with two curves, the lower inward, the 
upper outward and very slight: alule whitish with yellow borders: halteres 
tawny. Length of the body 4—5 lines; of the wings 8—10 lines. 
Var. Smaller, paler: frontalia red: shanks tawny: wings darker gray 
beneath the fore border towards the tips; prebrachial yein forming a right 
angle at its flexure. 
South America. 
Dexia muscania, Fem. 
Nigra, sat lata ; caput albidum; thorax cervinus, nigro quadrivitiatus ; 
seutellum et abdomen testacea; abdomen nigro viltatum; antenne 
fulve ; ale cinerea, ad venas fusce. 
Black, rather broad : head with a whitish covering ; frontalia pitchy, 
widening from the eyelets to the feelers; facialia without bristles ; 
to... Peet 
