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



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- 

 niargjinal 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 



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



confluent; mesopleurae with a furrow; wings generally in- 



fumated 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 



