240 



LEPTID^ 



Table of the Palcearctic Subfamilies and Genera of Leptid^. 



1 (8) Face flat or produced, with no socketed epistoma margined by 



broad side-cheeks. 



Cubital fork comparatively short, diverging and not bell-mouthed. 

 Ichneumon-Y\ke flies. 



2 (5) Third joint of the antennae flagelliform, annulated, and without a 



long terminal arista (fig. 165). 



All the tibite spurred. Lower branch of the cubital fork ending 

 in the wing-tip. 



Xylophagin.'E (p. 244). 



Fig. 1G5. — Xylophagus cinctua (J. x 20. 



Fio. 16C. — rLhacMcerns fidvicnrnis ?. 



(After Sn'-Ueii van VoU'-iilioven.) 



Fjg. 167. — Lampromyia funebris Duf. 

 (From a specimen in the Paris Museum.) 



3 (4) Antennte with a multi-articulate, often pectinate, flagellum (fig. 



166). 



Fourth posterior cell almost or quite closed ; small cross -vein long 

 and distinct. 



Ehachicerus. 



{Xylomyinarum ?). 



4 (3) Antennte with an eight-annulated simple flagellum (fig. 165). 



Fourth posterior cell wide open ; small cross-vein very short or 

 even just absent (fig. 182). 



1. Xylophagus. 



5 (2) Third joint of the antennse short and simple, or conical and 



indistinctly annulated, but in both cases with a long terminal 

 arista. Alula absent. 



Almost bare species. Lower branch of the cubital fork ending 

 below the wing-tip. 



VERMJLEONINJi: (p. 256). 



