Empididae. 119 



short, black, biserial, the former somewhat longer and uniserial be- 

 hind. Further a humeral bristle, a posthmiieral, three notopleural, a 

 couple of supraalar and a postalar bristle, all black and somewhat 

 short; besides there are hairs on the humeri and sonie more bristles 

 inwards to the humeri and at the transverse furrow. Scutellum with 

 two black marginal bristles. Pleura grey, the hairs on metapleura 

 yellowish. Abdomen grey, with somewhat longish, whitish or yellowish 

 white hairs, which are longest at the sides, short in the middle; 

 venter similarly coloured and haired. Exterior genitalia small, the 

 lower lamellæ roundish, directed more or less upwards; the upper 

 lamellæ small, lamelliform, slightly curved. Penis slightly curved; at 

 the hind margin of the eighth ventral segment there are long, yellow 

 hairs, the lamellæ short-haired with whitish hairs. Legs black; coxæ 

 greyish pruinose; the front metatarsi somewhat strongly, the hind 

 metatarsi somewhat swollen. Front femora with fine hairs on the 

 ventral side; middle femora with two ventral rows of bristly hairs; 

 hind femora with similar hairs ventrally on the apical part, short 

 hairs on the posterior side and some bristles on the anterior side 

 towards the apex; front tibiæ with fine, longish hairs on the posterior 

 side and with a fine, erect pubescence below; middle tibiæ with a 

 dense row of fine hairs on the dorsal side, with rows of bristles be- 

 low and about five long bristles dorsally, besides with a dense, erect 

 pubescence on the anterior side; hind tibiæ with somewhat dense, 

 strong hairs on both sides and with bristles above; tarsi short-haired 

 or slightly spinulous beneath, the front and hind metatarsi with some- 

 what long hairs dorsally, which are longest and somewhat bristly on 

 the latter; at the apex of the tarsal joints are short bristles; the 



Fig. 40. Wina; of E. chiopfera. 



dense pubescence on the anterior tibiæ is continued out on the tarsi. 

 The hairs and bristles black or brownish, sometimes still paler, the 

 dense pubescence on the anterior legs pale. Wings whitish, somewhat 

 milky; costa brownish in the basal half, black and strong from the 

 middle to the tip, the other veins whitish, only the subcostal and 



