340 MEMOIRS OF THE CARNEGIE MUSEUM 



Malar space distinct, the eyes not extending to the base of the mandibles ; postmarginal vein 

 very long Chrysocharis Forster. 



Malar ?pace wanting, the eyes large and extending to the mandibles ; postmarginal vein very 

 long, the stigmal vein subsessile and usually with a fuscous fascia from apex. 



Zaommomyia Ashmead, g. nov. (type Chrysocharis stigmata Ashm.). 



10. Wings usually with transverse fascise, the postmarginal vein not well developed ; head wider than 

 long ; fiagellum short, compressed, fusiform, the joints except the last wider than long. 



Closterocerus Westwood (type C. trifasciatus Westw.). 



11. Antennpe 10-jointed, with one ring-joint ,12 



Antennse 9-jointed, with one ring-joint or less 16 



12. Wings immaculate 13 



Wings maculate. 



Antennse very long, verticillate-pilose, the funicle joints subdentate Astichus Forster. 



13. Metanotum short, usually without a median carina 14 



Metanotum not short, tricarinate. 



Antennse filiform Selitriclius Rondani. 



14. Metanotum smooth, impunctate 15 



Metanotum punctate or sculptured. 



Wings subglabrous, the faint pubescence arranged in hair-lines ; postmarginal vein well devel- 

 oped, longer than the stigmal Secedes Forster. 



15. Front wings finely pubescent ; postmarginal vein long, well developed. 



Eyes not large, the malar space distinct ; scape of antennse metallic Euderus Haliday. 



Eyes very large, occupying the whole sides of the head, the malar space wanting ; scape of 



antennse very slender, white Euophthalmomyia Ashmead. 



Front wings subglabi'ous, not well pubescent, the pubescence arranged usually in more or less irregular 

 hair-lines ; postmarginal vein not well developed, rarely longer than the very short stigmal vein. 

 Head normal, not wider than the thorax ; stigmal vein very short, the knob sessile or subsessile ; 



parapsida/1 furrows complete ; abdomen long Omphale Haliday. 



Head very broad, lenticular, wider than the thorax ; stigmal vein rather long ; parapsidal fur- 

 rows obliterated anteriorly Hubbardiella Ashmead. 



16. Antennse 8-jointed, with one ring-joint 17 



Antennse 9-jointed, with one ring-joint, the funicle 3-jointed. 



Eyes normal, the malar space distinct Chrysocliaris Forster. 



Eyes very large, extending to base of mandibles, the malar space wanting. 



Zaommomyia Ashmead. 



17. Wings with a marginal fringe, often with transverse bands, the stigmal vein clavate, longer than the 



postmarginal Closterocerus Westwood. 



• Tribe III. Entedonini. 

 This tribe is easily distinguished from the Omphalini b}'- the distinctly petiolate 

 abdomen, and from the Pediobiini by the complete parapsidal furrows. 



TABLE OF GENERA. 



1. Females 2 



Males 14 



