392 LIST OF DIPTERA. 



Asilus Laevinus, n. s. Fuscus, capite fulvo pubescente, thorace vit- 

 tato, pectore ferrugineo, abdomine nigro, pedibus ferrugineis, 

 femoribus nigro-vittatis, alls subfulvis, areola submarginali ci- 

 nereo univittata. 



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

 yellow down, clothed behind and more thickly beneath with golden 

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

 pale brown, with some pale brown hairs on each side ; front and 

 clypeus thickly clothed with long golden hairs : eyes dark green ; 

 fore part flat, its facets much larger than those of the other part : 

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

 black, clothed with black hairs : chest thinly clothed with very short 

 black hairs ; sides furnished with some whitish hairs, and beset like 

 the hinder part with black bristles ; a broad brown stripe occupies 

 the middle, and is inlaid with two slender pale brown stripes : breast 

 dark ferruginous, clothed with whitish hairs, partly covered with a 

 hoary bloom : abdomen black, clothed with short black hairs ; hind 

 borders of the segments, especially on each side, adorned with longer 

 hoary hairs : legs ferruginous, clothed with rather long pale yellow 

 hairs, armed with black spines ; thighs streaked with black : wings 

 slightly tawny, with a gray streak on the submarginal areolet ; wing- 

 ribs ferruginous ; veins piceous, ferruginous at the base ; poisers 

 tawny. Length of the body 10 (?) lines ; of the wings 14 lines. 



a. Massachusetts. Prom Prof. Sheppard's collection. 



Asilus Anicius, n. s., fern. Cinereus, thorace piceo quadrivittato, 

 pectore abdominis segmentorum marginibus posticis ventreque ca- 

 nis, pedibus nigris, tibiis fulvis, alis subfulvis aut limpidis. 



Body gray : head a little narrower than the chest, covered with 

 hoary down, clothed thickly behind and beneath with yellow hairs, 

 beset behind the eyes with black bristles ; crown furnished with a 

 few black hairs ; front and clypeus covered with a few yellow hairs, 

 the latter also armed with yellow bristles : eyes bronze-black ; fore 

 part slightly convex, its facets much larger than those of the other 

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

 set with long pale yellow hairs : first and second joints of the feelers 

 black, clothed with a few black hairs ; second joint about half the 

 length of the first : ridge of the fore chest clothed with pale yellow 

 hairs and beset with black bristles : chest thinly clothed with short 

 black hairs, beset on each side and behind with black bristles, adorned 

 with four slender indistinct piceous stripes ; hind chest and breast 

 hoary, partly clothed with yellow hairs : abdomen narrower than the 

 chest and full twice its length, tapering from the base to the tip, 

 clothed with yellow hairs and towards the tip with black hairs, 





