456 LIST OF DIPTERA. 



and of equal length ; sixth segment a little shorter ; seventh and 

 eighth segments still shorter; ninth segment longer, compressed, 

 slender, black, shining : legs yellow, clothed with short yellow hairs, 

 and beset with black bristles of various length, and most thick on 

 the feet ; tips of the thighs tawny ; shanks tawny at the base ; fore 

 and middle shanks with a broad tawny band ; first joint of the feet 

 tawny, with a black tip ; second and following joints tawny at the 

 base ; claws black, ferruginous at the base ; foot-cushions pale 

 brown : wings gray, colourless at the base and along the fore oorder 

 for half the length and on some parts of the disk ; wing-ribs ferru- 

 ginous ; veins black, piceons towards the base, where they are ferru- 

 ginous ; poisers tawny. Length of the body 7 lines ; of the wings 

 10 lines. 



a. New York. Presented by E. Doubleday, Esq. 



Asilus Orphne, n. s., fern. Cinereus, thoracis vittis tribus canis, 

 abdomine apice nigra, antennis pedibusque nigris, tibiis flavis 

 apice nigris, tarsis basi piceis, alis limpidis. 



Body gray : head as broad as the chest, covered above with yellow 

 down, covered behind with tawny hairs, and more thickly beneath 

 with pale yellow hairs ; crown and front of the head furnished with 

 some black hairs ; clypeus adorned with a thick tuft of shining pale 

 yellow hairs: eyes dark green ; front part slightly convex, its facets 

 rather larger than those of the other part, but they all blend with each 

 other in size, and the bounds of the two parts are indistinct : lip black, 

 clothed at the base with long yellow hairs and at the tip with short 

 yellow hairs ; palpi black, beset with black bristles : feelers black ; 

 first and second joints beset with black bristles ; second joint about 

 half the length of the first, tawny at the tip ; third joint spindle- 

 shaped, as long as the first and the second joints ; fourth and fifth 

 joints slender, a little shorter than the third joint: chest with three 

 hoary stripes, beset on each side and behind with black bristles: 

 abdomen tapering from the base to the sixth segment, thinly 

 clothed with short white hairs and at the base with long yellow 

 hairs, narrower than the chest and rather less than thrice its length ; 

 sixth and following segments black and shining ; seventh, eighth 

 and ninth segments long, compressed, slender, forming a tail : legs 

 black, clothed with yellow hairs and beset with some black bris- 

 tles, which are thickest and most numerous on the feet; shanks 

 bright yellow, with black tips ; feet tawny at the base ; claws black ; 

 foot cushions pale brown : wings quite colourless; wing-ribs ferru- 

 ginous ; veins black, piceous towards the base, where they are 



