428 LIST OF DIPTERA. 



Asilus Iamenus, n. s., mas. Fuscus, thoracis vittis quatuor macu- 

 lisque nonnullis nigro-fuscis, scutello metathorace pectoreque ca- 

 ms, abdomine cano maculis dorsalibus fuscis, antennis fulvis 

 apice piceis, pedibus rufis, femoribus nigro-vittatis, tibiis tarsis- 

 que apice piceis, alis subfulvis dilatatis. 



Head narrower than the chest, covered with pale tawny down, 

 clothed thinly behind and thickly beneath with white hairs, beset 

 behind the eyes with a row of black bristles; crown covered 

 with pale ferruginous down, beset on each side with a few black 

 hairs ; clypeus prominent, thickly armed with long whitish bristles : 

 eyes bronze ; fore part flat, its facets larger than those of the other 

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

 black, beset with long black hairs : first and second joints of the 

 feelers tawny, beset with short black bristles; second joint hardly 

 half the length of the first; third joint piceous, tapering from the 

 base to the tip, about three-fourths of the length of the first ; bristle 

 black, a little longer than the second and the third : chest very 

 light brown, clothed with very short black hairs, beset on each side 

 and behind with black bristles, adorned with four dark brown 

 stripes, and with some dark brown marks, each side stripe interrupted 

 by two oblique tawny bands; scutcheon, hind chest, and breast 

 hoary : abdomen rich brown, much narrower than the chest, and 

 about twice its length, tapering from the base to the tip, thinly 

 clothed with short pale hairs, adorned on each side with long whit- 

 ish hairs ; sides and hind borders of the segments, and the whole of 

 the under-side hoary ; first and second segments short ; second seg- 

 ment armed on each side with some black bristles ; third and follow- 

 ing segments long, successively decreasing in length ; sexual parts 

 shining, piceous, rather large: legs pale red, thinly clothed with 

 very short whitish hairs, armed with black spines ; hips clothed with 

 long whitish hairs ; thighs striped with black ; tips of shanks and 

 of feet piceous; claws black; foot-cushions dark tawny: wings 

 light tawny, reaching when closed a very little beyond three-fourths 

 of the length of the abdomen, widened from the middle to the tips 

 by means of the very convex fore border; wing-ribs piceous ; veins 

 black ; poisers dark tawny. Length of the body 10^ lines ; of the 

 wings 15 lines. 



a. North Bengal. From Miss Campbell's collection. 



Asilus Alamanus, n. s. Fuscus, attenuates, thorace nigro, vittis tri- 

 bus fasciisque obliquis quatuor fuscis, lateribus canis, abdomine 

 cinereo, maculis trigonis nigris, antennis pedibusque nigris, alis 

 subfuscis apice cinereis. 



Body long, brown : head much narrower than the chest, thickly 

 clothed behind and beneath with yellowish white hairs, beset behind 





