NORTH AMERICAN HYxMKNOPTERA, 171 



Subfamily Embolemin.e. 



Eyes arclied, Ofelli large; st'a]ie shorter tlian first fmiicle joint. 



Genus Kinboloiniisi Westwood. 



Eyes flat, ocelli very small; scape iimcli longer than first fuuicle joint; wings 



rudimentary Genus Pediiioniina Foerster. 



8iil)faini]y BethylinvE. 



Head without ocelli * Genus Sclerochroa Foerster. 



Head with ocelli. 



Fore wings with a complete radial cell Genus Sierola Cameron. 



Fore wings with a nearly complete radial cell. 

 Basal vein with a hackwards directed ))ranch. 



Antenna} 12-jointed, % 9 Genus Perisemus Foerster. 



AntennsE 13-jointed » Geuus Ooiliozus Foerster. 



Basal vein without a branch. 



Parapsidal furrows iilaiu; abdominal segments of almost equal length. 



» Genus Epyris Westwood. 

 Parapsidal furrows wanting ; abdominal segments of unequal length. 



Geuus Isobracliiiiiii Foerster. 

 Fore wings without a radial cell. 



Fore wings with a marginal and a stigmal vein. 



* Genus Betliylus Latreille. 

 Fore wings without marginal and stigmal veins. 



Antenna" 13-jointed Genus Ateleopteriii^ Foerster. 



Anteuuse 12-joiuted Genus Holopedina Foer.ster. 



Subfamily Ceraphronin^. 



Head flat, perfectly horizontal ; vertex with a median furrow. 



Genus 8,yii arsis Foer.ster. 

 Head more rounded, not perfectly horizontal ; vertex without a median furrow. 



No ocelli Genus Lagynofles Foerster 9. 



With evident ocelli. 



Wings without a plain radial cell, or narrow with a linear radial cell. 

 Head with a sharp tooth between the bases of the antennae. 



Genus liagynodes Foerster % . 



Head without such a tooth * Genus Cerapliron Jurine. 



Wings with a broad radial cell. 



Wings perfectly hairless Geuus Trichosteresis Foerster. 



Wings hairy. 



Antennte toothed or branched, % : eyes smooth, not hairy, 9 . 



Mesonotum with furrows f Genus liygoeeiMifS Poer.ster. 



Mesonotum without furrows Genus .4trit.oniiis Foerster. 



Antennpe filiform, % ; eyes hairy, 9- 



t Genus Iflegaspilus Westwood. 



