112 H. C. EFFLATOUN. 



3. E. VESTITUS HE/. (i'I. V!, f'i;. 4). 



Jii:/., Ditt. raucolti d. Léo. l'ea, la, 43. (442). 37. (1912), 

 Svrph. Elliiop. Région, III. (1915), et Syrph. cethiop. Mus. Nat. 

 iiini-arici, 1(5. (^4). (1921). 



ItlL'i 



l)IA(iS()SIS:-- Eadius 4 + 5 oiily sliglitly dippcd ; hiiid 

 aUu'.si of malc vei'v svvoUeii, incrassate and vcry liairy. 



l)i:S('RlPTI()S:~ Mule: The iace and irons, wliich arc 

 short an<l flat, arc entirely covcred witli dense silvery-white dnst 

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

 those of the latter ; vcrtcx very elongate, rather puffed ont above 

 and very poiute'd 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 œneous-black ; its pubesoence is rather long and consists of a 

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

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

 third. Kyes moderately covered with short, pale and inconspicuous 

 hairs. Antennge with the third joint rather truncate on the oiiter 

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

 hrown ; the thrse joints pcssess some whitish dust and in addition 

 the two basai joints pôssess a few short pale and erect hairs 

 beneath ; arista with the two very inconspicuous basai joints 

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

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

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

 some characteristic, more shining, and bare areas above the 

 suture ; this tomentum consists of two thin médian longitudinal 

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

 thèse 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 antl in the sutures ; the pubescencs is greyish-tawny, 

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

 side-margins and below the postallar calli ; the pleura; are densely 

 but not coarsely punctate, also covered with greyish dust and 

 possess greyis'i 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 



