lO H. C. EFFLATOUN. 



TABLE OF THE NORTH AFRICAN SUB-FAMILIES. 



1 (6) Antennae moderate in length and droop- 



ing, never placed on a produced frons. 



2 (3) Radio-median cross-vein placed before 



the middle of cell M2 SYRPHIN.E. 



S ('2) Radio-median cross-vein placed after 

 the middle of cell M2. 



4 (5) Cell R5 remarkably contracted about 



the middle by a deep loop in Radius 4+ 5 ERISTALIN/E. 



5 (4) Radius 4 + 5 not looped, if somewhat 



looped (Euitierus) the turned up part 



of Media 1 + 2 is doubly bent MILESIN/E. 



6 (1) Antennae porrected, sometimes placed 



on a produced frons. 



7 (8) Radius 4 + 5 normal, without a loop or 



adventitious veinlet CHRYSOTOXIN.E.* 



8 (7) Radius 4 + 5 with a leop or veinlet 



almost dividing the cell beneath it (cell 

 R5) into two. 



!) (10) Arista dorsal; face rounded and pilose; 



scutellum usually armed or emarginate MICRODON1 IN^E. * 



l(j (!>) St vie terminal; antennae often placed 



on a long petiole UERIOIDIN^E. 



*So far not represented in Egypt. 



