10 (JENKKA OF HYMKNOITKKA. 



Table of Families. 



Ptwti'rior trochanters 2-j()inte«l* 2. 



Posterior tro<'hanter8 I -jointed 11. 



2. — Abdomen conniite, united to the tliorax by the entire diameter of the baiMl 



part, the articulation not movable 3. 



AI>domen sessile or petiolate, united to the thorax by a ]>ortioii only of its 



transverse diameter, the articulation movable. --Paraaitioa... 4. 



3. — Anterior tibise with two apical spui-s; abdomen of J furnished at tip with 



a pair of saws.— Phyllophaga TENTHBEDINIDjE. 



Anterior tibiie with one apical spur; abdomen of 9 furnishcil at tip with a 



borer.— Xylophaga UROCERID^. 



i. — Anterior wings with several closed cells, or at least a closed or nearly closed 

 marginal or submarginal cell, very rarely without, as in some Evaniidte 



and BraconidH' 5. 



Anterior wings almost veinless, without closed or perfect cells; very rarely 

 with a closed marginal or submarginal cell, as in some genera of Procto- 



trupidie 10. 



5. — Anterior wings with a costal nervure and a more or less developed stigma .fi. 

 Anterior wings without a costal nervure and stigma; abdomen gen' mlly 



ovate and more or less compressed CYNIPiD.^. 



6. — Abdomen inserted upon the dorsum or near the base of the mctatborax. 



EVANIID^. 



Abdomen attached to the extremity of the metiithorax 7. 



7. — Anterior wings with two recurrent ncrvures, very nirely with but one.. ..8. 



• Anterior wings with but one recurrent nervure, very rarely without 9. 



8. — Costal and subcostal nervures separate and distinct, the costal cell therefore 

 present ; first submarginal and tirst discoidal cells separate and distinct. 



TRIGONALIDiE. 

 Costal and sulK-ostal nervures continent, the costal cell therefore absent ; 

 first submarginal and first discoidal cells always continent. 



ICHNEUMONIDiB. 

 9. — Co.stal and subcostal nervures separate and distinct, the costal cell therefore 



present ; head globose, vertex tuberculate and rugo.se STEPHANID^. 



Costal and subcostal nervures confluent, the costal cell therefore absent. 



BRACONIDH. 

 10. — Posterior margin of prothorax not reaching the tegulre; ovipositor i.sauing 



before the apex of the abdomen CHALCIDID.ffl. 



Posterior margin of prothorax reaching the tegulse ; ovi])ositor issuing from 

 the apex of the abdomen PROCTOTRUPID^. 



* In adopting this character (which is not altogether a sati-sfactory one, being 

 often difficult to distinguish) the compiler has followed after Hartig, Taschen- 

 berg, Andre, etc., without making an examination of the Cynipid®, Chalcididte 

 and Proctotrupidse, in which families exceptions will doubtless be found to occur ; 

 these families, howev ■^r, are readily distinguished from those placed in the next 

 division, by their generiilly very small size and the fewness of the wing nervures ; 

 the Pelecinidse and Chrysidida;, which also have imperfect neuration, are so well 

 characterized thaf they cannot be confounded with anything else. In the other 

 families of this division the posterior trochanters are distinctly 2-jointed. 



