l8o CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [BuU. 



Cutting edge of mandibles turned outward, their tips usually 

 neither meeting nor overlapping when mandibles are 



flexed toward mouth IS 



9. First abdominal segment not cylindrical, but broadened or 



bulbous toward apex; with or without wings 10 



First abdominal segment cylindrical or nearly cylindrical, not 

 broadened or becoming bulbous at apex; first abscissa of 

 cubitus of fore wings wanting; wings always present .... 



AGRIOTYPID^ 



10. First abscissa of cubitus of fore wings usually present, fore 



wings with only one recurrent vein; edges of fused sec- 

 ond and third dorsal abdominal segments not meeting be- 

 neath BRACONID^ p. 216 



First abscissa of cubitus of fore wing wanting, fore wings 

 with two recurrent veins; edges of fused second and third 

 dorsal abdominal segments meeting or overlapping be- 

 neath BRACONID^ p. 216 



11. Abdomen inserted low down on propodeum, distinctly below 



middle of latter, upper edge of hind coxal sockets or coxal 

 line close to lower edge of abdominal sockets or abdom- 

 inal line 12 



Abdomen inserted high up on propodeum in middle or above 

 middle of latter, upper edge of hind coxal sockets or 

 coxal line remote from lower edge of abdominal socket or 

 abdominal line EVANIID.E p. 239 



12. First abdominal segment cylindrical or nearly cylindrical, 



not broadened or bulbous at apex; first abscissa of cubitus 



in fore wings present 13 



First abdominal segment broadened or bulbous at apex, not 

 cylindrical; first abscissa of cubitus in fore wings usually 

 absent 14 



13. First abdominal segment with distinct spiracles a little be- 



yond middle; prepectal carina confined to sternum 



EUPACHYLOMMID^ 

 First abdominal segment without spiracles; prepectal carina 

 confined to pleura ROPRONIID^ 



14. Costal cell distinct TRIGON ALID^ p. 242 



Costal cell obliterated by approximation of costal and sub- 

 costal veins ICHNEUMONID^ p. 243 



15. Abdomen with only two dorsal segments visible 



VANHORNIIDJE 

 Abdomen with at least five dorsal segments and five pairs of 

 lateral spiracles visible, the second and third segments fused 



LYSIOGNATHID^ 



