^<'.1206. ICHNEUMON FLIES— ASHMEAD. 109 



(). IJadiiis angularly broken; second cnhifal cell petiolate, the finst ahscis.sa of the 

 radius distinct 7 



Radius iiol angularly broken; second cubital cell sessile, the first abscissa of the 



radius wanting (870) Agonia Forster 



7. Second abdominal segment vitlumt a median cross line, usually quite smooth. 8 

 Second abdominal segment with an incomplete median cross line or depression, 

 the surface anteriorly to same wrinkled. 

 Stigma rather thick, as wide as the first al)scisga of the radius is long; first 

 joint of flagellum much longer than the second. 



(871) E])i7iiicta ForKter. 



H. Stigma very thick and wider than the first abscissa of the radius is long 9 



Stigma iiol especially thickened and also not wider than the first abscissa of 

 radius is long 10 



9. Radius terminating not far from the tip of the wing. . . (872) Pachysema Forster. 

 Radius terminating very far from the tip of the wing. 



(873) Brachystroplia Forster. 



10. Stigma short, not extending to half the length of the marginal cell 11 



Stigma elongate, extending to half or more than half the length of the marginal 



cell \ 14 



11. Head quadrate, or much elongate, the abdomen elongate, compressed 12 



Head transverse, or transverse-quadrate, wider than the thorax, the abdomen 



less elongate, not much compressed ; stigma triangular 13 



VI. Head nnich elongate; abdomen in female strongly compressed, sword-shaped; 

 mesonotum tvithout ])arapsidal furrows, or at most represented by an 



elongate fovea (874) Chacnon Curtis = Copidura Schiodte. 



Head ouadrate; abdomen in female only comjiressed at apex; mesonotuni witJi 

 parapsidal furrows, which converge and usually meet at the middle 

 and thence as a deep furrow to the scutellum. 



(875) Coelinius Nees. 

 !.">. Radius originating a little before the middle of the stigma and extending to the 

 apex of the wing, the first abscissa of the radius long, twice the 

 length of the first abscissa of the cul)itus; first cubital cell about 

 thrice as long as the first discoidal cell; second discoidal cell want- 

 ing (876) Provancheria Ashmead, ' new genus 



(Type, Euhadizon gracilis Provancher. ) 

 Radius originating a little hehind the middle of the stigma and joining the costa 

 a little before the tip of the wing, the first abscissa not or scarcely 

 as long as the first abscissa of the cubitus; first cubital cell only a 

 little longer than the first discoidal; second discoidal cell present; 

 abdomen scarcely longer than the head and thorax united. 



(877) Pok'irwn Giraud. 



14. Recurrent nervure joining the first cubital cell 15 



Recurrent nervure interstitial with the first transverse cubitus. 



Mesonotum 'without parapsidal furrows or the same only slightly indicated 

 anteriorly; abdomen short, subpetiolate (878) Mesora Forster. 



15. First and second abscissa? of the radius of an unequal length 16 



First and second absciss* of the radius of an ecjual length. 



(879) homeriata Fiirster. 



10. Transverse cubitus, the second abscissa of the cubitus, and the recurrent nervure 



of an unequal length 17 



Transverse cubitus, the second abscissa of the radius, and the recurrent nervure 



of an equal length (880) Trislsa Forster. 



17. Stigma not always linear, or of an ecjual breadth or thickness throughout; meta- 

 notum not thickly hairy, always rugose or wrinkled 18 



^ In honor of Abbe L. Provancher. 



