274 MEMOIES OF THE CARNEGIE MUSEUM 



8. Front wings normal 9 



Front wings with the portion compiising the costal cell dilated and obliquely truncate at the juncture 



of the submarginal vein with the marginal. 



Antennae 13-jointed, the flagellum dilated, the joints of funicle transverse, subpedunculate. 



Epicopterus Westwood (type E. choreiformis Westw.)- 



9. Antennse 13-jointed, with 2 or 3 ring joints 13 



Antennae 11- or 12-jointed 10 



10. Thorax at most sparsely punctate, or almost smooth 11 



Thorax slightly rugulosely punctate ; antennae 12-jointed ; marginal vein about twice as long as the 



stigmal Syntasis Walker (type S. encyrtoides Walk.). 



11. Wings xvith marginal ciliae 12 



Wings without marginal ciliae. 



Antennae 12-jointed, with one ring-joint b 



Antennae 11- or 12-joiDted, with tiuo ring-joints. 



Antennse 11 -jointed ; abdomen as long as the head and thorax united, compressed. 



Syntomocera Forster (type 8. clavicornis Forst.). 

 Antennae 12 jointed ; abdomen elongated, usually compressed and carinate beneath. 



Asematus Forster (type^. amphibolus Forst.). 



b. Abdomen oblong, fully as long as the head and thorax united ; head short, subconvex in front ; 



mesonotum not short, the furrows deep. Cecidoxenus Ashm. g. nov. (type C. nigrocyaneus Ashm.). 



12. Antennae 13-jointed, subclavate, the joints of the funicle, except the first, quadrate or nearly ; meta- 



thorax short with a median carina, the spiracles small, oval ; head with sparse, thimble-like punc- 

 tures ; abdomen conic-ovate Semiotellus Westwood (type Seniiolus mundus Walk.). 



18. Antennae with two ring-joints 14 



Antennae with three ring-joints. 



Abdomen depressed, the ovipositor subexserted, never very long, at the most one third the 

 length of the abdomen, usually shortei-, .Spocerus Mayr (type JE. excavatus Mayr). 



14. Metathorax short, with a median carina ; abdomen compressed, above depressed, beneath keeled. 



Terobia Forster (type T. dispila Forst.). 

 Metathorax very short, without a median carina ; abdomen subglobose or short oval ; tlagellum sub- 

 clavate, the pedicel large, the joints of the funicle small, submoniliform, increasing in size towards 

 the club Paraterobia Ashmead g. nov. (type P. nigriceps Ashm.). 



15. Antennae inserted near the mouth or just above the clypeus 16 



Antennae inserted on or near the middle of the face, far above the clypeus 21 



16. Marginal vein normal 17 



Marginal vein abnormal, semi circularly thickened at the base Stigmatocrepis Ashmead. 



17. Clypeus at apex truncate or with a slight median sinus, never produced 18 



Clypeus at apex triangularly produced. 



Antennae 12-jointed, the flagellum filiform, pubescent or hairy, the funicle joints quadrate or 

 transverse quadrate, losely joined Tridymus Ratzeburg. 



18. Head and thorax not umbilicately punctate, at the most finely punctate, shagreened or rugulose, 



sometimes smooth 19 



Head and thorax umbilicately punctate. 



Antennae 13-jointed with two ring-joints Decatomothorax Ashmead. 



19. Head and thorax finely punctate or shagreened, rarely smooth 20 



