250 milmoiks of the carnegik museum 



15. Metathoiax long with a long projection on each side posteriorly : abdomen not longer than tlie thorax, 



siibeompressed at the sides, the second segment long ; subcostal vein ending in a knob, the marginal, 

 postmarginal and stigmal veins not developed. . .Hybothorax Ratzeburg (type H. graffii Ratzeh.). 

 Metuthorax short, ending in two long divergent spines ; abdomen oval, acute at apex, the second seg- 

 ment long; marginal vein present: the stigmal vein short, not distinct. 



Kriechbaumerella Dalla Torre (type C'ulops palpchraior Kriecht). 



16. Antennse 10-jointed. 



Postmarginal vein long and slender, the stigmal vein short, its knob subpetiolate ; head viewed 

 from in front triangular ; abdomen briefly pointed at apex. 



Hippota Walker (type Chalets pectinicornis Latr.). 



17. Hind femora ivilh one or more large teeth or projections beneath, as well as being finely denticulate 



or serrate 18 



Hind femora without a large tooth or projection beneath, simple or smooth, or at the most finely den- 

 ticulate beneath 21 



18. Metathorax normal, without projections or teeth 19 



Metathorax tvith projections or teeth on each side 28 



19. Hind femora with a single large triangular tooth ; scutellum produced into an acute spine. 



Antennae 12-jointed Notaspidium Dalla Torre. 



Hiud femora with one or two prominent projections beneath near the middle and finely denticulate or 

 serrate. 



Hind femora with one promiuence 20 



Hind femora with two promiaences Hockeria Walk . 



20. Anteunce 13-joiated Neochalcis Kirby. 



Antennaj 12-jointed Euchalcis Dufuur- 



21. Metathorax normal, ivithout projections 22 



Metathorax with a projection on each side . ., 28 



22. Scutellum normal, neither bidentate nor spineil 23 



Scutellum either spined or bidentate 25 



23. Hind femora beneath with the edges finely denticulate or serrate ; head n(.rmal, or at least not very 



thin antero-posteriorly 24 



Hind femora beneath smooth, not denticulate. 



Head lenticular, very thin antei'o-posteriorly and wider than the thorax ; antennie normal, 13- 



jointed, with 2 ring-joints ; middle tibia3 slender Encyrtocephalus Ashmead. 



Head normal ; antennaj abnormal, 13-jointed, with 1 ring-joint, the pedicel and first two joints of 

 the flagellum each covered above by a broad lamina or horny flap ; middle tibiae clavate. 



Schwarzella Ashmead, g. nov. (type S. arizonensis Ashm.). 



24. Antenna5 13-jointed Haltichella Spinola. 



Antennaj 12-jointed Conura Spinola. 



25. Antennie 11- or 12-jointcd 26 



Antennie 13-jointed. 



26. Scutellum produced into a long, stout spine 27 



Scutellum at apex bidentate or with a median iminession. 



Antennse 12-jointed Antrocephalus Kirby. 



Antennse 11 jointed Stomatoceras Kirby. 



27. Antennie 1 1-jointed ; hind femora unarmed Aspirhina Kirl)y . 



Antennie 12-jointed ; hind femora with ;i large, triangular tooth Notaspidium Diitla Torre. 



