2l8 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [BuU. 



14. First submarginal and first discoidal cells not confluent but 



separated; antennae not clavate nor geniculate 15 



First submarginal and first discoidal cells confluent, mar- 

 ginal cell semicordate, ending about half-way between 

 stigma and apex of wing or nearer to stigma; antennae 

 simple in both sexes Perilitus p. 226 



15. Marginal cell semicordate, ending nearer to stigma than apex 



of wing, narrower than stigma, marginal vein curved 

 throughout; with or without submarginal cells; propodeum 



more or less sloping behind; ovipositor concealed 



Euphorus p. 224 

 Marginal cell sublanceolate, ending about half-way between 

 stigma and apex of wing, broader than stigma; marginal 

 vein straight near end, front wings with two distinct sub- 

 marginal cells; propodeum vertically truncate behind; 

 ovipositor exserted Dinocampus p. 225 



16. Fore wings with three submarginal cells 17 



Fore wings with two submarginal cells, first submarginal 



cell separated from first discoidal cell; mesopleurae with a 

 crenulate furrow; face not rostriform Orgilus p. 226 



17. Face not rostriform 18 



Face rostriform; first submarginal and first discoidal cells 



more or less confluent Bracon p. 230 



t8. First submarginal cell and first discoidal cells more or less 

 confluent; mesopleurae with a furrow; wings generally in- 



f umated Bassus p. 226 



First submarginal cell separated from first discoidal cell; 

 mesopleurae without a furrow; wings hyaline. .Earinus p. 229 



19. Fore wings with three submarginal cells 20 



Fore wings with two submarginal cells ' 23 



20. Abdomen with only one segment visible above 21 



Abdomen with three segments visible above 22 



21. Eyes bare, first submarginal and first discoidal cell not con- 



fluent Ascogaster p. 231 



Eyes hairy, first submarginal and first discoidal cell confluent 



Ohelonus p. 232 



22. Abdomen beneath with two teeth pointing backward; recur- 



rent vein received by first submarginal cell, second sub- 

 marginal cell not narrowed at base; mid tibiae simple 



Sigalphus p. 233 

 Abdomen beneath edentate; recurrent vein subobsolete, sec- 

 ond submarginal cell much narrowed at base; mid tibiae 

 externally gibbous Phanerotoma p. 233 



23. Abdomen above with only one segment visible 



Urosigalphus p. 233 

 Abdomen above with three segments visible ....Triaspis p. 234 



