DIPTERA. 69 
their tips pitchy: feelers ferruginous; first and second joints tawny, the 
angles of their tips produced into horns ; third joint slightly convex be- 
neath, armed above with a very long, dark ferruginous horn, which is 
curved downward, and extends to half the length of the compound joint ; 
the latter is black, very slightly curved upward, shorter than the third 
joint: chest and breast pale tawny, clothed with yellow hairs; disk of the 
chest black: abdomen brown, obconical, very much longer than the chest ; 
first segment and hind borders of the following segments tawny, clothed 
with yellow hairs ; underside tawny: legs tawny ; feet black; hind-shanks 
and tips of hind-thighs pitchy; fore-shanks and middle-shanks whitish, 
the former with pitchy tips; foot-cushions tawny ; hairs varying in colour 
according to the parts which they clothe: wings nearly colourless, tawny 
beneath the fore border which is brown, adorned near the hind border with 
three large brown spots; the first near the base ; the second in the middle, 
doubly connected with the third, which extends to the fore border ; wing- 
ribs and veins pitchy; tip cross-vein forming an obtuse angle near the 
base; scales tawny; poisers tawny, with pale yellow knobs. Length of 
the body 44—54 lines ; of the wings 9—11 lines. 
Para. 
DicHELACERA PRETEREUNS, Plate 2, fig. 6. 
Fem. Picea, capite subtus fulvo, thorace vittis quatuor lividis ornato, an- 
tennis ferrugineis apice piceis, pedibus ferrugineis, tarsis anticis fe- 
moribusque nigris, alis fuscis limpido variis ad costam fulvis. 
Body pitchy: head dark brown above, dark tawny in front and be- 
neath where it is clothed with tawny hairs: eyes dark bronze, parted above 
by a moderately broad interval; all the facetssmall: sucker black; lancets 
tawny ; palpi ferruginous, long, slender: feelers dark ferruginous ; first 
and second joints clothed with black hairs; horn nearly as long as the 
third joint, whence it springs, much curved downward, ending in a bristle ; 
compound joint pitchy, hairy, hardly curved upward, much shorter than 
the third joint: chest adorned with four livid stripes, the side pair are in- 
distinct: abdomen pitchy black, linear, conical towards the tip, clothed 
with short black hairs, twice the length of the chest; hind border of the 
fourth segment fringed with short white hairs: legs dark ferruginous, 
clothed with very short black hairs; thighs black, tinged with brown, 
clothed with dark tawny hairs; claws and fore-feet black; wings dark 
TS . ae 
