LIST OF DIPTERA. 465 



with long hoary hairs : feelers black ; first and second joints clothed 

 with whitish hairs ; first joint red at the tip ; second joint more than 

 half the length of the first; third joint spindle-shaped, more than 

 twice the length of the second ; fifth joint very thick, like a stout 

 spine, a little shorter than the third : chest and breast hoary : chest 

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

 behind with a few black bristles, adorned with five brown stripes ; 

 the two stripes on each side incompletely divided ; hinder part and 

 sides of the chest, fore chest and breast clothed with whitish hairs : 

 abdomen fawn-colour, narrower than the chest, and more than twice 

 its length, tapering from the base to the tip, clothed with very short 

 pale yellow hairs ; sides of the hind borders of the segments armed 

 with two or three long pale yellow bristles ; first and second seg- 

 ments very short; third and following segments long, successively 

 decreasing in length ; tip piceous in the male, black, and slightly 

 compressed in the female : legs ferruginous, clothed with pale yel- 

 low hairs, armed with long pale yellow spines ; feet black ; thighs 

 j striped with black ; hind thighs nearly all black ; claws black, red 

 at the base ; foot-cushions ferruginous : wings whitish ; wing-ribs 

 ferruginous : veins black, ferruginous towards the base ; poisers 

 tawny. Length of the body 12^ lines ; of the wings 20 lines. 



j a. Tripoli. 



I 



| Asilus Bulbus, n. s., mas. et fem. Piceus, thoracis vittis tribusful- 

 vis, humeris pecloreque ferrugineis, abdominis apice compressor 

 antennis nigris, pedibus ferrugineis, tar sis nigris, alis albidis 

 apice fuscis. 



Body piceous : head narrower than the chest, covered with 



I tawny down, clothed behind and beneath with pale yellow hairs, be- 



i set behind the eyes with some black bristles ; sides of the crown 



,. thickly covered with black hairs ; clypeus thickly armed with long 



! black bristles : eyes dark bronze ; fore part flat, its facets somewhat 



larger than those of the other part : lip black, clothed at the tip 



j with short tawny hairs ; palpi black, clothed with long pale yellow 



hairs; tongue ferruginous: feelers black; first and second joints 



I beset with black hairs ; second joint full half the length of the first ; 



third joint rather broad, obconical at the base, tapering thence to 



the tip, beset with a very few short and slender hairs ; bristle stout, 



nearly as long as the third joint: chest thinly clothed with short 



black hairs, beset on each side and behind with a few black bristles, 



adorned with three dark tawny stripes ; middle stripe very slender ; 



side stripes connected by two oblique tawny bands with the sides of 



the chest, which are also tawny ; shoulders and breast ferruginous, 



the latter covered with a gray bloom : abdomen narrower than the 



