542 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



of the stigmal vein; females usually winged and with 12- 



jointed antennae 16 



4. Mesonotum without parapsidal furrows 5 



Mesonotum with furrows, sometimes abbreviated in front.. 7 



5. Lateral ocelli very close to or touching eye margin 6 



Lateral ocelli far from eye margin, wings banded 



Aradophagus p. 550 



6. Head transverse, considerably wider than long 



Telenomus p. 544 

 Head quadrate, abdomen more or less pointed Phanurus p. 544 



7. Postscutellum armed with a spine Protrimorus p. 544 



Postscutellum not armed 8 



8. Mesonotum with three furrows, abbreviated anteriorly 



Trissolcus p. 549 



Mesonotum with two furrows, abbreviated anteriorly 



Dissolcus 



9. Females 10 



Males 13 



io. Scutellum present 11 



Scutellum wanting Baeus p. 551 



11. First abdominal segment bearing a horn above 



Ceratobaeus 

 First abdominal segment not horned 12 



12. Mandibles bidentate Aeolus p. 551 



Mandibles tridentate Acoloides p. 551 



13. Basal abdominal segment with a horn above Ceratobaeus 



Basal segment of abdomen not armed 14 



14. Basal nervure present IS 



Basal nervure wanting Acoloides p. 551 



15. Head subquadrate Baeus p. 551 



Head transverse Aeolus p. 551 



16. Abdomen with first segment petioliform, longer than wide.. 17 

 Abdomen with first segment as wide as or wider than long. . 18 



17. Posterior femora slender, tibial spurs weak . . Prosacantha p. 551 

 Posterior femora swollen, tibial spurs stout Teleas p. 553 



18. Postscutellum with a small spine or tubercle .. Hoplogryon p. 553 

 Postscutellum simple Paragryon p. 553 



19. Postmarginal vein greatly lengthened, submarginal vein com- 



plete, not ending in a stigma 20 



Postmarginal vein wanting or poorly developed, submarginal 



often abbreviated and stigmated 4 1 



20. Basal nervure present, distinct 21 



Basal nervure wanting 3 1 



21. Females 22 



Males 25 



22. First abdominal segment with a horn or protuberance above 23 

 Basal segment unarmed 24 



