Asilidae. 75 



black with yellow hairs. Frons and vertex greyish, with black hairs. 

 Occjput greyish yellow, the occipito-orbital bristles black; tlie hairs 

 yellow. Antennæ black, narrowly reddish at the apex of the second 

 and the base of the third joint; the two first joints with black hairs 

 which are long below the first joint. Thorax light greyish or brownish, 

 the niiddle stripe brownish black or blackish, broad in front, narrowed 

 and pointed behind, with a very narrow median line in front; the 

 side stripes large, somewhat lighter than the middle stripe, dark brownish 

 or grey; no humeral stripes. The disc clothed with short, erect, black 

 hairs which are longer behind, and yellowish at the hind and posterior 

 lateral margins. The bristles black, sometimes some yellow posteriorly. 

 Scutellum with yellowish hairs and long, generally black marginal 

 bristles. Pleura grey or brownish pruinose with some longer, yellowish 

 hairs; the long hairs on meta- and hypopleura yellow. Abdomen 

 light brown, sometimes with indications of a dorsal line; with the 

 light from behind the abdomen is dark brown or greyish, slightly 

 shining, with yellowish brown or greyish hind margins of the segments, 

 and with the side margins and the hind corners of the segments of 

 the same colour. Venter grey. Abdomen clothed with depressed, yel- 

 lowish hairs, sometimes a few in the middle line are black, and on 

 the last two segments the hairs are generally black; at the hind mar- 

 gins of the segments there are moderately long, yellow bristles. Venter 

 sparingly clothed with long, yellowish hairs; the eighth ventral seg- 

 ment is black, somewhat shining, the hind margin is produced in a 

 long, tongue-shaped prolongation, rounded at the apex ; it has a tuft 

 of long hairs which are 

 ferrugineous above, 

 black below; in the 

 middle of the hind 

 margin of the seventh 

 segment there are 

 black hairs. The ven- 

 tral lamella is black, 

 shining. The genitaha 

 are black, the arms 

 of the upper forceps 

 nearly straight, with 

 about parallel margins, ^ig. 38. E. rufibarlm, male forceps. 



rounded at the end: the lover forceps reach only half the length of 

 the upper, the inner branches are black (not ferrugineous as in most 

 other Asilinæ) ; the genitalia are clothed with somewhat long, yellow 

 hairs. Legs black; coxæ greyish or brownish pruinose with long, 



