368 INSECTA SAUNDERSIANA. 
the tip, about twice the length of the second, not more than half the length 
of the face; sixth feathered with short hairs, bare at the tip, stout at the 
base, about four times the length of the third: chest with three brown 
stripes : abdomen almost cylindrical, a little longer and narrower than the 
chest, with a brown stripe; second and third segments with a brown spot on 
each side: legs tawny ; feet black ; fore-thighs black, with tawny tips : wings 
almost colourless ; veins black, tawny towards the base; lower cross-vein 
slightly oblique, with two very indistinct curves, the lower outward, the 
upper inward: alule white; halteres yellow. Length of the body 14 line; 
of the wings 3} lines. 
United States. 
Canosta Lata, Fom. 
Nigra, cano-tomentosa; caput antice album ; thoraw cervino trivittatus ; 
pedes fulvi, femoribus anticis tarsisque nigris, femoribus posterioribus 
nigro strigatis ; ale sublimpide. 
Black, with a hoary covering: head with a white covering in front; 
frontalia black, broad, almost linear, including on the hind part a short, 
lanceolate, cinereous stripe; facialia without bristles; epistoma not pro- 
minent: eyes bare: mouth and palpi black: feelers deep black; third joint 
linear, obliquely truncated at the tip, reaching the epistoma, more than 
twice the length of the second ; sixth slender, feathered with short hairs, 
stout at the base, more than twice the length of the third: disk of the 
chest with three indistinct short fawn-coloured stripes : abdomen obconical, 
a little longer and broader than the chest: legs tawny ; fore-thighs and feet 
black ; posterior thighs with a black band near the tip : wings almost colour- 
less ; veins black, tawny towards the base; lower cross-vein almost upright, 
with two slight curves, the lower outward, the upper inward: alule white: 
halteres yellow. Length of the body 1} line; of the wings 3} lines. 
United States. 
Canosia souita, Fem. 
Nigra, cano-tomentosa ; caput antice album; thorax flavo-fusco trivit™ 
tatus ; pedes fulvi, femoribus tarsisque nigris; ale sublimpide. 
Black, with a hoary covering: head with a white covering in front ; 
frontalia narrower towards the feelers: fucialia without bristles; epistoma 
