DIPTERA. — 288 
stripe, ferruginous towards the tip: legs black; trochanters ferruginous ; 
thighs tinged with gray; middle legs rather long: wings very slightly 
gray ; veins black, pitchy at the base; prebrachial vein forming an almost 
right angle at its flexure, near which it is curved inward, straight from 
thence to the tip which is very near the tip of the fourth vein ; lower cross- 
vein with the two usual curves which are slight: alule luteous with 
whitish disks: halteres yellow. Length of the body 43 lines ; of the wings 
8 lines. 
Cape. 
TACHINA ALBIFRONS. 
Nigra, canescens ; caput argenteum ; thoraxnigro quadrivittatus ; scutellum 
testaceum ; abdomen cano-micans, lateribus basi ferrugineum; tibia 
picee ; ale sublimpide. 
Fam. Agride; Gen. Pales? Fem. Black, with a hoary covering : 
head with a silvery white covering ; frontalia pitchy, striated, linear; a row 
of bristles along each side; epistoma yellow, slightly prominent; facialia 
without bristles along the face, with bristles on each side of the epistoma 
and of the peristoma; lateralia ferruginous: eyes bare: mouth pitchy ; 
palpi tawny ; feelers black; second joint reddish at the tip; third linear, 
reaching the epistoma, nearly thrice the length of the second, reddish at 
the base: chest with four black stripes ; middle pair slender ; scutcheon tes- 
taceous : abdomen obconical, not longer than the chest, with hoary reflec- 
tions, ferruginous on each side towards the base : legs black; thighs with a 
hoary tinge; knees ferruginous ; shanks pitchy : wings almost colourless ; 
veins black, tawny at the base; prebrachial vein forming an almost 
right angle at its flexure, slightly inclined inward from thence to its tip, 
which approaches near the tip of the cubital vein; lower cross-vein almost 
straight, the two usual curves being very indistinct: alule white: hal- 
teres tawny. Length of the body 44 lines; of the wings 9 lines. 
United States. 
pee 
