414 LIST OF DIPTERA. 



feelers black ; first and second joints linear, beset with black bris- 

 tles ; second joint narrower than the first, and about half its length ; 

 third joint spindle-shaped, clothed with a few black hairs, nearly as 

 long as the first ; fourth joint or bristle longer than the first: chest 

 and breast ferruginous, covered with hoary bloom : chest with four 

 gray stripes, the middle pair narrow and straight ; the outer pair 

 shorter and broader, and each divided by an oblique ferruginous 

 band along the suture ; the fore border and the sides are clothed 

 with hoary hairs, and the latter are beset with a few black bristles : 

 breast more thickly clothed with hoary hairs : abdomen convex, ta- 

 pering from the base to the tip, much narrower than the chest, and 

 about twice its length, clothed with hairs which are short on 

 the back, but longer on each side; under-side hoary and clothed 

 with hoary hairs ; first segment extremely short ; second segment 

 short ; third segment long ; fourth and following segments to the 

 ninth successively, but hardly perceptibly decreasing in length ; 

 eighth and ninth segments black ; eighth segment beset with some 

 black bristles ; ninth segment shining : legs red ; hips and trochan- 

 ters black, clothed with long hoary hairs ; thighs black at the base, 

 clothed with hoary hairs, and armed with black spines; shanks 

 black at the tips, clothed with short hoary hairs, beset with black 

 spines ; feet black, clothed with black hairs, and thickly armed with 

 black spines ; claws black, red at the base ; foot-cushions pale taw- 

 ny : wings light brown, gray along the fore border from the middle 

 to the tip ; wing-ribs and veins ferruginous ; poisers tawny. Length 

 of the body 15 — 18 lines ; of the wings 26 — 28 lines. 



a. New Holland. Presented by the Linnean Society. 



b. New Holland. Presented by J. Hunter, Esq. 



c. New Holland. Presented by the Earl of Derby. 



d. ? 



The wings of the male are widened by means of the fore border, 

 which is convex beyond the middle. 



Asilus heros, Wied. Auss. Zweif. i. 427, 4. 

 a. Georgia ? 



Asilus Antiorus, n. s., mas. Cinereo-fulvus, thoracis vittis quatuor 

 fuscis, abdomine fusco, antennis nigris, pedibus rufis, femoribus 

 piceis, alis fulvis. 



Head much narrower than the chest, covered with dull yellow- 

 ish white down, clothed behind and beneath with long white hairs, 

 beset behind the eyes with a row of black bristles ; crown brown, its 

 sides clothed with long yellow hairs and beset with black bristles 



