330 * PBOCEEDINGS OF THE NATIONAL MUSEUM. 



10. Wiugs fuscous, H'ii/i. white rays or bands 11 



Wings hyaline. 



Marginal vein about three times as long as the stigmal, the postmarginal not 

 longer than the shaft of the stigmal, the latter short, perpen- 

 dicular; axilhe just meet at inner basal angle; pronotum very 

 short, scarcely visible from above; mesonotum scaly punctate 

 or reticulate. 



(18) Tetralophiellus Ashmead new genus (Type T. hrevicollis 

 Ashmead). 



Marginal vein only a little longer than the stigmal, the postmarginal vein verj- 

 short, hardly developed ; axilhe meeting at inner basal angle; 

 pronotum not short, conical; mesonotum smooth; antennae 

 not short, subclavate (19) Tetraoladia Howard 



Marginal vein fully twice as long as thick, or about half the length of the 

 stigmal, the postmarginal only slightly developed; antennae 

 clavate, the club ovate, 3-jointed, much stouter than thefuni- 

 cle, the scape more than twice as long as thick at apes ; funicle 

 joints one- fourth longer than thick; pronotum very short, 

 transverse linear; mesonotum microscopically reticulate; 

 hypopygium very prominent, plowshare shaped. 



(20) Titracnemoptiis Ashmead, new genus (Type T. icestivoodii 

 Cockerell). 



Marginal vein punctiform, not longer than thick, the iiostmarginal A^ein not 

 developed; antennte subclavate, the pedicel hardly longer 

 than thick at apex, but longer than the first joint of funicle; 

 funicle joints submouiliform; pronotum very short; mesono- 

 tum shagreened or scaly punctate. . (21) Pentacnemus Howard. 



11. Marginal vein about twice as long as thick, not longer than the stigmal, the 



postmarginal vtin hardly so long; axillae not quite meeting at 

 inner basal angles; autennie subclavate, inserted close to the 

 mouth, the scape long, slender, only slightly thickened toward 

 apex; funicle joints 1-2 subequal, scarcely longer than 

 thick, the following gradually increasing in thickness; eyes 

 very large; frons narrow; mesonotum smooth, metallic, a 

 little shorter than the scutellum, the latter opaque, sha- 

 greened; abdomen ovate, shorter than the thorax, depressed. 

 (22) HabroUpopleryx Ashmead, new genus (Type Psilophrys 

 pulcliripennis Ashmead). 



12. Males. 



Epistoma carinate 17 



Epistoma not carinate. 



Antennte simple witliout branches, the scape and dagcllum sometimes 



di lated or compressed 13 



Antennie ramose, with 4 branches. 



Marginal vein rather long, the stigmal and postmarginal veins 

 short. 

 Wings with fuscous rays; lateral ocelli nearer to the eye margin 

 than to the front ocellus; axilhe meeting at base of scutellum. 



(1) Calocerinus Howard. 



Wings hyaline; lateral ocelli not nearer to the eye margin than 



to the front ocellus; axilbw not quite meeting at base of the 



scutellum (2) Tetralophidea Ashmead, new genus. 



13. Wingless or subapterous forms 16 



Winged. 



Front wings with the marginal vein usually shorter, the stigmal and post- 

 marginal veins short, or the stigmal vein is longer than the 

 short marginal and postmarginal veins united 15 



