LIST OF DIPTERA. 413 



short yellow hairs : feelers black; first and second joints beset with 

 black bristles ; second joint hardly shorter than the first ; third joint 

 spindle-shaped, as long as the first and the second ; fourth and fifth 

 joints like a spine, about half the length of the third : chest varied 

 with dark brown, which forms a stripe in the middle and some 

 streaks and marks on each side, clothed with short black hairs ; sides 

 and hind part armed with tawny bristles, the latter also beset with 

 some long black hairs ; breast clothed with tawny hairs : abdomen 

 tapering from the base to the tip, clothed with pale tawny hairs, 

 much narrower than the chest, and nearly twice its length ; hind bor- 

 ders of the segments paler ; segments from the third to the sixth 

 successively, but slightly decreasing in length ; seventh segment 

 much shorter ; eighth segment a little longer ; ninth segment much 

 longer, black, shining : legs brown, clothed with yellow hairs and 

 beset with tawny bristles ; feet and tips of shanks with some short 

 black bristles ; claws black ; foot-cushions brown ; hind thighs 

 armed beneath with black spines : wings very light brown ; wing- 



j ribs piceous ; veins black, piceous at the base ; poisers brown. 



. Length of the body 10 lines ; of the wings 14 lines. 



' a. South Africa. Presented by Dr. A. Smith. 



I Asilus cristatus, Hoffmansegg, Meig. Dipt. ii. 322, 24. Loew, 



Linn. Ent. iii. 424, 1. 

 • a. England. 

 I b. South of France. Presented by the Entomological Club. 



Group XI. 



The subdivision required by this group is deferred until Pro- 

 fessor Loew's descriptions of the European Asili are completed. 



Asilus plicatus, Leach, MSS. Wied. Auss. Zweif. ii. 643, 61, fern. 

 Cinereo-fulvus, pilis canis vestitus, thorace vittis quatuor cinereis, 

 pedibus rufis,femoribus basi tibiis apice tarsisque ritfis, alis sub- 

 fuscis. 



Body pale grayish tawny : head narrower than the chest, 

 thickly clothed, and especially on the under-side, with hoary hairs, 

 beset behind the eyes with a few black bristles ; tubercle of the eye- 

 lets and each side of the crown beset with black bristles ; clypeus 

 thickly armed with black bristles behind, and with much longer pale 

 yellow bristles in front : eyes bronze-black ; fore part flat, its facets 

 rather large, but decreasing in size, and rather blending with those 

 of the other part, from which, however, they are tolerably distinct : 

 lip black, short, stout, clothed at the tip with short pale yellow hairs: 



2 02 



