112 H. C. EFFLATOUN. 



3. E. VESTITUS BEZ. (PI. VI, fig. 4). 



Bez., Ditt. raccolti d. Leo. Fea, la, 43. (442). 37. (1912), 

 Syrph. Ethiop. Region, III. (1915), et Syrph. eethiop. Mus. Nat. 

 tmngarici, 16. (24). (1921). 



DIAGNOSIS:- Radius 4 + 5 only slightly dipped; hind 

 metatarsi of male very swollen, incrassate and very hairy. 



DESCRIPTION:- Male: The face and irons, which are 

 short and flat, arc entirely covered with dense silvery-white dust 

 and hairs like in E. ajrimnus ; jowls and occiput also resembling 

 those of the latter ; vertex very elongate, rather puffed out above 

 and very pointed in front; it is densely punctate and covered with 

 tawny -yellow dust, except about the anterior and the two posterior 

 ocelli and on the punctations of the back, where it is rather shin- 

 ing aeneous-black ; its pubesoenoe is rather long and consists of a 

 few white hairs on the extreme narrow front, blackish hairs about 

 the ocellar triangle and pale tawny-yellow hairs on the hinder 

 third. Eyes moderately covered with short, pale and inconspicuous 

 hairs. Antennae with the third joint rather truncate on the outer 

 side and usually blackish, but sometimes rather reddish or reddish- 

 brown ; the three joints possess some whitish dust and in addition 

 the two basal joints possess a few short pale and erect hairs 

 beneath ; arista with the two verv inconspicuous basal joints 

 blackish and the rather thin, long, third joint also black, but 

 reddish-brown at the base. Thorax coarsely punctate, somewhat 

 shining, and covered with yellowish-grey tomentum, except for 

 some characteristic, more shining, and bare areas above the 

 suture ; this tomentum consists of two thin median longitudinal 

 lines and two fairly large round areas on the outside of each of 

 these two lines, above ; the dust is denser on the base, side and 

 lower margins of the thorax, as well as on the rather prominent 

 humeri and in the sutures ; the pubescence is greyish-tawny, 

 rather short but erect on the disc, and longer and yellower on the 

 side-margins and below the post a 11a r calli ; the pleurae are densely 

 but not coarsely punctate, also covered with greyish dust and 

 possess greyish hairs ; there is a remarkable fringe of shining 

 whitish-grey hairs on the posterior margin of the mesopleurae and 

 a less dense and shorter fringe on the pteropleurae. Scutellum less 



