256 MEMOIRS OF THE CARNEGIE MUSEUM 



15. Metathorax long with a long projection on each side posteriorly ; abdomen not longer than the thorax, 



subcompressed 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 Eatzeb.). 

 Metathorax 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 Coelops palpebrator Kriecht). 



16. Antennae 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 Chalcis pectinicornis Latr.). 



17. Hind femora ivith 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. 



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

 serrate. 



Hind femora with one prominence ^ 20 



Hind femora with two prominences Hockeria Walk. 



20. Antennae 13-jointed Neochalcis Kirby. 



Antennae 12-jointed Euchalcis Dufour- 



21. Metathorax normal, without projections 22 



Metathorax ivith 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 normal, or at least not very 



thin antero-posteriorly 24 



Hind femora beneath smooth, not denticulate. 



Head lenticular, very thin antero-posteriorly and wider than the thorax ; antennae normal, 13- 

 jointed, with 2 ring-joints ; middle tibiae slender Encyrtocephalus Ash mead. 



Head normal ; antennae abnormal, 18-jointed, with 1 ring-joint, the pedicel and first two joints of 

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



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



24. Antennae 13-jointed Haltichella Spinola. 



Antennas 12-jointed Conura Spinola. 



25. Antennae 11- or 12-jointed 26 



Antennae 13-jointed. 



26. Scutellum produced into a long, stout spine 27 



Sciutellum at apex bidentate or with a median impression. 



Antennas 12-jointed Antrocephalus Kirby. 



Antennae lljointed Stomatoceras Kirby. 



27. Aiitennaj U-jointed ; hind femora unarmed Aspirhina Kirby. 



Antenuie 12-jointed ; hind femora with ii large, triangular tooth Notaspidium Dalla Torre. 



