ASHMEAD : CLASSIFICATION OF THE CHALCID FLIES 255 



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



or serrate 3 



Hind femora simple or at most very finely denticulate beneath, without a large tooth or projection 7 



3. Metathorax normal, without projections 4 



Metathorax with projections, i. e., spines or teeth on each side posteriorly 14 



4. Hind femora with two prominences or elevations beneath and minutely denticulate. 



Hockeria Walker (type H. dexius Walk.). 



Hind femora not so formed, at the most with one prominence or one tooth, the edges beyond usually 



finely denticulate or serrate 5 



5. Antennae 13-jointed ; scape without a tooth beneath near the middle. Neochalcis Kirby 



(tyjie Euchalcis vetuta Dufour). 



Antennae 11-joiuted ; scape with a tooth beneath near the middle Euchalcis Dufour 



(type E. miegii Dufour). 



6. Scutellum at apex bidentate ; hind femora armed with 11 small teeth beneath ; antennae 11-jointed. 



AUocera Sichel (type A. bicolor Sichel). 



7. Metathorax normal, ivithout projections or teeth 8 



Metathorax with projections or teeth on each side 14 



8. Scutellum normal, neither bidentate nor spined 9 



Scutellum either spined or bidentate at apex 11 



9. Hind femora beneath with the edges finely denticulate or serrate, the head normal or not very thin 



antero-posteriorly 10 



Hind femora swollen but the edges beneath simple, not denticulate, the head lenticular and very thin 

 antero-posteriorly, wider than the thorax, the ocelp on a straight line ; stigmal vein curved, not 

 short, a little longer than half the length of the marginal vein ; costal cell broad ; antennae 13- 

 jointed, with 2 ring-joints .Encyrtocephalus Ashmead (type E. simplicipes Ashm.). 



10. Antennae 13-jointed ; abdomen short, the second segment (first body segment) occupying about half the 



whole surface ; hind femora armed with about 12 small teeth Haltichella Spinola 



(type Chalcis pusilla Sjiinolsi) . 



Antennae 12-jointed ; abdomen short, the second segment occupying fully half the whole surface ; hind 



femora very minutely denticulate beneath Conura Spinola (type C. flavicans Spinola). 



11. Scutellum at apex bidentate 12 



Scutellum at apex produced into a long, stout spine 13 



12. Antennae 12-jointed, very long, the scape long ; hind femora unarmed Antrocephalus Kirby 



(type Haltichella fasciconiis Walk.). 



Antennae 11-jointed, the flagellum very long and slender ; hind femora beneath with the apical half or 



so finely denticulate and often hairy Stomatoceras Kirby (type Halticella liberator Walk.). 



13. Antennae 11-jointed, the flagellum subclavate, densely pilose ; hind femora unarmed. 



Aspirhina Kirby (type Halticella dubitator Walk.). 



Antennae 12-jointed, the flagellum filiform ; hind femora armed with one large triangular tooth, the 



edges beyond finely serrate Notaspidium Dalla Torre (type Notaspis formiciformis Walk.). 



14. Antennae 10- or 11-jointed 16 



Antennae 12-jointed. 



Wings not variegated 15 



Wings variegated. 



Metathorax with a stout spine on each side ; abdomen with the second segment occupying 

 half the whole surface Trichoxenia Kirby {type Halticella cineraria Wal^.). 



