LIST OF DIPTERA. 421 



Asilus Icadius, n. s., fern. Fuscus, thoracis vittis tribus pallidiori- 

 bus, pectore thoracisque lateribus ventreque cinereo-fulvis, abdo- 

 minis segmentorum marginibus posticis cinereis, antennis nigris, 

 pedibus rufis, femoribus supra nigris, alis subfuscis. 



Head small, much narrower than the chest, covered with yel- 

 lowish white down, clothed behind and more thickly beneath with 

 whitish hairs, beset behind the eyes with a row of black bristles ; 

 sides of the crown covered with dark tawny down and beset 

 with black bristles ; tubercle of the eyelets beset with a cluster of 

 black bristles ; clypeus very prominent, thickly armed with long 

 whitish bristles, and in front with a few black bristles : eyes very 

 dark bronze ; fore part flat, its facets rather larger than those of the 

 other part : lip black, clothed at the tip with short tawny hairs ; palpi 

 black, beset with long black hairs : feelers black ; first and second 

 joints beset with short black bristles ; second joint nearly half the 

 length of the first ; third joint spindle-shaped, a little longer than 

 the first ; bristle rather stout, as long as the third joint : chest brown, 

 clothed with very short black hairs, beset on each side and behind 

 with black bristles, adorned with three pale brown stripes, ferrugi- 

 nous on each side of the front, hoary behind : breast and sides of the 

 chest tawny, tinged with gray, partly clothed with whitish hairs : ab- 

 domen brow r n, narrower than the chest, and much more than twice 

 its length, tapering from the base to the tip ; hind borders of the 

 segments gray ; under-side ferruginous, with a hoary bloom ; first 

 and second segments very short; third and following segments 

 long ; tip piceous, shining, nearly cylindrical, armed with a circlet 

 of short black spines : legs red, clothed with short whitish hairs, 

 armed with black spines; thighs black above; claws black; foot- 

 cushions tawny : wings tinged with brown ; win. g -ribs ferruginous ; 

 veins piceous ; poisers tawny. Length of the body 12 lines ; of the 

 wings 18 lines. 



Asilus Ogulinus, n. s., fern. Fuscus, thoracis vittis tribus pectoreque 

 pallidiorihus I abdominis apice ferrugineo, antennis nigris, pedi- 

 bus rufis, antennis femoribusque posticis nigris, alis fiavo-fuscis. 



Body dark brown: head narrower than the chest, covered with 

 hoary down, clothed behind and beneath with hoary hairs, beset be- 

 hind the eyes with a row of black and some white bristles ; crown 

 covered with dark tawny down, clothed on each side with long yel- 

 low hairs, and with a few black hairs ; tubercle of the eyelets beset 

 with black bristles; clypeus thickly beset with long pale yellow hairs, 

 and also armed with a few black bristles : eyes very dark bronze ; 

 fore part convex, its facets a little larger than those of the other 



